# fourzerotwo

> Pay-per-call data APIs for AI agents: 547 endpoints across 66 APIs (UK company, property, legal and public-sector data, economics, research, web and domain tools). Every endpoint is a plain HTTPS GET and a tool on one MCP server. Most are free within a daily allowance; the rest cost a fraction of a cent, paid per call in USDC over x402 (HTTP 402) or from prepaid card credit. No account needed.

Calls are read-only. A call is charged only when the data source succeeds; invalid arguments (HTTP 400) and failures (HTTP 502) cost nothing. Responses are JSON, usually {data, source{name, licence, attribution}}; keep the attribution when you show the data.

## Quickstart

- MCP (easiest): add the streamable-HTTP server https://fourzerotwo.si/mcp. Tools: search_apis (find an endpoint by keywords, free), list_apis (browse, free), call_api {tool, arguments}. 100 free calls/day without a key. One tool per endpoint: https://fourzerotwo.si/mcp?tools=all.
- HTTP with a free key: POST https://fourzerotwo.si/keys {"email": "you@example.com"} returns a key; send it as X-API-Key on GET https://fourzerotwo.si/v1/{api}/{endpoint}?param=value. 500 free calls/day on endpoints marked [free]; [sample] endpoints allow 3 a day each.
- HTTP with x402: GET https://fourzerotwo.si/v1/uk-postcodes/lookup?postcode=SW1A+1AA → 402 with a PAYMENT-REQUIRED header (price, network, payTo). Sign a USDC transferWithAuthorization (gasless, EIP-3009) and retry with PAYMENT-SIGNATURE → 200 with the data and a PAYMENT-RESPONSE settlement receipt. Any x402 client does this for you (e.g. @x402/fetch).
- Pay by card: prepaid credit on a free key, bought at https://fourzerotwo.si/credits (agents: POST https://fourzerotwo.si/keys/top-up {"usd"} with X-API-Key returns a Stripe checkout link for a human). Balance: GET https://fourzerotwo.si/keys/me.
- Network: eip155:8453 (Base mainnet), asset USDC.

## Machine-readable

- [catalog.json](https://fourzerotwo.si/catalog.json): every API and endpoint with MCP tool name, params, price and free tier
- [openapi.json](https://fourzerotwo.si/openapi.json): OpenAPI 3.1 for the whole gateway
- [/.well-known/x402](https://fourzerotwo.si/.well-known/x402): flat list of paid resources

## Topic MCP servers

Smaller MCP servers with one directly named tool per endpoint:

- [UK company & compliance data](https://fourzerotwo.si/mcp/v/uk-business): Companies House, Gazette notices, sanctions screening, LEIs and UK legislation.
- [UK property & area data](https://fourzerotwo.si/mcp/v/uk-property): Sold prices, area reports, postcodes, flood risk, crime and food hygiene for any UK location.
- [Web & domain tools](https://fourzerotwo.si/mcp/v/web): Read any public page as markdown, link previews, URL safety, page audits, domain availability and DNS, validators.
- [Everyday agent tools](https://fourzerotwo.si/mcp/v/tools): Time zones and world business days, VAT rates and maths, currency conversion, UK business days, public holidays.
- [Trade & public tenders](https://fourzerotwo.si/mcp/v/trade-procurement): UK commodity codes and duties, UK trade statistics, UK/EU public tenders and US federal spending.
- [UK public services](https://fourzerotwo.si/mcp/v/uk-public-services): NHS organisations, schools, care quality ratings, food hygiene and policing for any UK area.
- [Product safety & recalls](https://fourzerotwo.si/mcp/v/safety-recalls): UK product recalls, MHRA drug and device alerts, FSA food alerts, accident reports and US CPSC recalls.
- [Health & medicines](https://fourzerotwo.si/mcp/v/health): Clinical trials, RxNorm drug lookups, FDA drug and device data, PubMed and NHS organisations.
- [Environment & energy](https://fourzerotwo.si/mcp/v/environment): UK river levels and rainfall, bathing waters, flood warnings, weather, earthquakes and the GB electricity grid.
- [Transport & travel](https://fourzerotwo.si/mcp/v/transport): Airports, runways and frequencies worldwide, tides, UK road collisions and London transport.
- [Research papers](https://fourzerotwo.si/mcp/v/research): arXiv, PubMed, Crossref and OpenAlex scholarly metadata.

## Endpoints

Format: endpoint [free tier] — price per call — params (? = optional). MCP tool name = {api}__{endpoint}.

### Airports Worldwide (airports)

Every airport, airfield and heliport worldwide: ICAO/IATA codes, location, elevation, runways, radio frequencies and nearby navaids — look up by code, search by name or town, or find the nearest. Docs: https://fourzerotwo.si/apis/airports

- [Airport by code](https://fourzerotwo.si/v1/airports/airport) [free]: An airport by ICAO, IATA or ident: name, type, town, country and region, location, elevation, runways and frequencies. — $0.001 per call. Params: code
- [Search airports](https://fourzerotwo.si/v1/airports/search) [free]: Find airports by name or town and/or country, optionally by type or scheduled service only; biggest first. — $0.001 per call. Params: name?, country?, type?, scheduled?, limit?
- [Airports near a point](https://fourzerotwo.si/v1/airports/near) [free]: Airports (large/medium/small by default) within a radius of a point or UK postcode, nearest first. — $0.002 per call. Params: lat?, lng?, postcode?, radius_km?, type?, scheduled?, limit?
- [Runways](https://fourzerotwo.si/v1/airports/runways) [free]: An airport's runways: length, width, surface, lighting and each end's identifier, heading and elevation. — $0.001 per call. Params: code
- [Radio frequencies](https://fourzerotwo.si/v1/airports/frequencies) [free]: An airport's radio frequencies (tower, ground, ATIS, approach…) in MHz. — $0.001 per call. Params: code
- [Airports in a country](https://fourzerotwo.si/v1/airports/country) [free]: Airport counts by type, the large airports and the regions for a country. — $0.001 per call. Params: country
- [Navaids near a point](https://fourzerotwo.si/v1/airports/navaids-near) [free]: VORs, NDBs, DMEs and other navaids within a radius of a point, with frequency and associated airport. — $0.002 per call. Params: lat?, lng?, postcode?, radius_km?, limit?

### Bank of England Rates (bank-of-england)

Bank Rate, SONIA, sterling exchange rates, gilt yields and average UK mortgage and loan rates. Docs: https://fourzerotwo.si/apis/bank-of-england

- [Official Bank Rate (%)](https://fourzerotwo.si/v1/bank-of-england/bank-rate) [free]: Official Bank Rate (%) — latest value and recent history (Bank of England IUDBEDR). — $0.001 per call. Params: from?
- [SONIA, sterling overnight index average (%)](https://fourzerotwo.si/v1/bank-of-england/sonia) [free]: SONIA, sterling overnight index average (%) — latest value and recent history (Bank of England IUDSOIA). — $0.001 per call. Params: from?
- [Spot exchange rate, US$ into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-usd) [free]: Spot exchange rate, US$ into sterling — latest value and recent history (Bank of England XUDLUSS). — $0.001 per call. Params: from?
- [Spot exchange rate, euro into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-eur) [free]: Spot exchange rate, euro into sterling — latest value and recent history (Bank of England XUDLERS). — $0.001 per call. Params: from?
- [Spot exchange rate, Japanese yen into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-jpy) [free]: Spot exchange rate, Japanese yen into sterling — latest value and recent history (Bank of England XUDLJYS). — $0.001 per call. Params: from?
- [Spot exchange rate, Canadian dollar into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-cad) [free]: Spot exchange rate, Canadian dollar into sterling — latest value and recent history (Bank of England XUDLCDS). — $0.001 per call. Params: from?
- [Spot exchange rate, Australian dollar into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-aud) [free]: Spot exchange rate, Australian dollar into sterling — latest value and recent history (Bank of England XUDLADS). — $0.001 per call. Params: from?
- [Spot exchange rate, Swiss franc into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-chf) [free]: Spot exchange rate, Swiss franc into sterling — latest value and recent history (Bank of England XUDLSFS). — $0.001 per call. Params: from?
- [UK gilt 5-year nominal par yield (%)](https://fourzerotwo.si/v1/bank-of-england/gilt-5y) [free]: UK gilt 5-year nominal par yield (%) — latest value and recent history (Bank of England IUDSNPY). — $0.001 per call. Params: from?
- [UK gilt 10-year nominal par yield (%)](https://fourzerotwo.si/v1/bank-of-england/gilt-10y) [free]: UK gilt 10-year nominal par yield (%) — latest value and recent history (Bank of England IUDMNPY). — $0.001 per call. Params: from?
- [UK gilt 20-year nominal par yield (%)](https://fourzerotwo.si/v1/bank-of-england/gilt-20y) [free]: UK gilt 20-year nominal par yield (%) — latest value and recent history (Bank of England IUDLNPY). — $0.001 per call. Params: from?
- [2-year fixed mortgage rate, 75% LTV (%, monthly)](https://fourzerotwo.si/v1/bank-of-england/mortgage-2y-fixed) [free]: 2-year fixed mortgage rate, 75% LTV (%, monthly) — latest value and recent history (Bank of England IUMBV34). — $0.001 per call. Params: from?
- [3-year fixed mortgage rate, 75% LTV (%, monthly)](https://fourzerotwo.si/v1/bank-of-england/mortgage-3y-fixed) [free]: 3-year fixed mortgage rate, 75% LTV (%, monthly) — latest value and recent history (Bank of England IUMBV37). — $0.001 per call. Params: from?
- [Standard variable / revert-to rate mortgages (%, monthly)](https://fourzerotwo.si/v1/bank-of-england/mortgage-svr) [free]: Standard variable / revert-to rate mortgages (%, monthly) — latest value and recent history (Bank of England IUMTLMV). — $0.001 per call. Params: from?
- [Any series](https://fourzerotwo.si/v1/bank-of-england/series) [free]: Any Bank of England database series by code, from a date. — $0.002 per call. Params: code, from?
- [5-year fixed mortgage rate, 75% LTV (%, monthly)](https://fourzerotwo.si/v1/bank-of-england/mortgage-5y-fixed) [free]: 5-year fixed mortgage rate, 75% LTV (%, monthly) — latest value and recent history (Bank of England IUMBV42). — $0.001 per call. Params: from?
- [Personal loan rate, £10,000 (%, monthly)](https://fourzerotwo.si/v1/bank-of-england/personal-loan-rate) [free]: Personal loan rate, £10,000 (%, monthly) — latest value and recent history (Bank of England IUMBX67). — $0.001 per call. Params: from?
- [Mortgage approvals for house purchase (number, monthly, SA)](https://fourzerotwo.si/v1/bank-of-england/mortgage-approvals) [free]: Mortgage approvals for house purchase (number, monthly, SA) — latest value and recent history (Bank of England LPMVTVX). — $0.001 per call. Params: from?
- [Approvals for remortgaging (number, monthly, SA)](https://fourzerotwo.si/v1/bank-of-england/remortgage-approvals) [free]: Approvals for remortgaging (number, monthly, SA) — latest value and recent history (Bank of England LPMB4B3). — $0.001 per call. Params: from?
- [Net consumer credit lending to individuals excl. student loans (£m, monthly change, SA)](https://fourzerotwo.si/v1/bank-of-england/consumer-credit) [free]: Net consumer credit lending to individuals excl. student loans (£m, monthly change, SA) — latest value and recent history (Bank of England LPMB3PS). — $0.001 per call. Params: from?
- [Net credit card lending to individuals, amounts outstanding (£m, SA)](https://fourzerotwo.si/v1/bank-of-england/credit-card-lending) [free]: Net credit card lending to individuals, amounts outstanding (£m, SA) — latest value and recent history (Bank of England LPMVZRJ). — $0.001 per call. Params: from?
- [M4 money supply, amounts outstanding (£m, SA)](https://fourzerotwo.si/v1/bank-of-england/m4-money-supply) [free]: M4 money supply, amounts outstanding (£m, SA) — latest value and recent history (Bank of England LPMAUYN). — $0.001 per call. Params: from?
- [2-year fixed mortgage rate, 90% LTV (%, monthly)](https://fourzerotwo.si/v1/bank-of-england/mortgage-2y-fixed-90ltv) [free]: 2-year fixed mortgage rate, 90% LTV (%, monthly) — latest value and recent history (Bank of England IUMB482). — $0.001 per call. Params: from?
- [Sterling effective exchange rate index (Jan 2005 = 100)](https://fourzerotwo.si/v1/bank-of-england/sterling-effective-rate) [free]: Sterling effective exchange rate index (Jan 2005 = 100) — latest value and recent history (Bank of England XUDLBK67). — $0.001 per call. Params: from?
- [UK gilt 5-year nominal zero-coupon yield (%)](https://fourzerotwo.si/v1/bank-of-england/gilt-5y-zero-coupon) [free]: UK gilt 5-year nominal zero-coupon yield (%) — latest value and recent history (Bank of England IUDSNZC). — $0.001 per call. Params: from?
- [Spot exchange rate, Norwegian krone into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-nok) [free]: Spot exchange rate, Norwegian krone into sterling — latest value and recent history (Bank of England XUDLNKS). — $0.001 per call. Params: from?
- [Spot exchange rate, Swedish krona into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-sek) [free]: Spot exchange rate, Swedish krona into sterling — latest value and recent history (Bank of England XUDLSKS). — $0.001 per call. Params: from?
- [Spot exchange rate, Danish krone into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-dkk) [free]: Spot exchange rate, Danish krone into sterling — latest value and recent history (Bank of England XUDLDKS). — $0.001 per call. Params: from?
- [Spot exchange rate, Hong Kong dollar into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-hkd) [free]: Spot exchange rate, Hong Kong dollar into sterling — latest value and recent history (Bank of England XUDLHDS). — $0.001 per call. Params: from?
- [Spot exchange rate, Singapore dollar into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-sgd) [free]: Spot exchange rate, Singapore dollar into sterling — latest value and recent history (Bank of England XUDLSGS). — $0.001 per call. Params: from?
- [Spot exchange rate, South African rand into sterling](https://fourzerotwo.si/v1/bank-of-england/gbp-zar) [free]: Spot exchange rate, South African rand into sterling — latest value and recent history (Bank of England XUDLZRS). — $0.001 per call. Params: from?

### Bathing Water Quality (bathing-water)

Every designated bathing water in England — beaches, lakes and river swimming sites — with its latest classification (excellent to poor), today's pollution-risk forecast and the date of the latest sample. Docs: https://fourzerotwo.si/apis/bathing-water

- [Bathing waters near a point](https://fourzerotwo.si/v1/bathing-water/near) [free]: Designated bathing waters within a radius (default 25 km) of a UK postcode or point, nearest first, with classification and pollution risk. — $0.002 per call. Params: postcode?, lat?, lng?, radius_km?, limit?
- [Bathing water by id](https://fourzerotwo.si/v1/bathing-water/site) [free]: One bathing water: classification and year, pollution-risk forecast, latest sample date, water company and profile link. — $0.001 per call. Params: id
- [Search bathing waters](https://fourzerotwo.si/v1/bathing-water/search) [free]: Find bathing waters by name or district, and/or by classification (e.g. every "poor" site). — $0.001 per call. Params: name?, classification?

### Calculators (calculators)

Currency conversion at ECB reference rates, UK business-day maths with official bank holidays, and postcode-to-postcode distance. Docs: https://fourzerotwo.si/apis/calculators

- [UK business days](https://fourzerotwo.si/v1/calculators/uk-business-days) [free]: Is a date a UK business day; add or subtract N business days; count business days between dates. Uses official bank holidays per nation. — $0.001 per call. Params: date, add?, until?, nation?
- [Distance between postcodes](https://fourzerotwo.si/v1/calculators/postcode-distance) [free]: Straight-line distance (km and miles) and compass bearing between two UK postcodes. — $0.002 per call. Params: from, to
- [Currency conversion](https://fourzerotwo.si/v1/calculators/currency-convert) [free]: Convert between ~30 currencies at the ECB reference rate for today or any date in the last 90 days. — $0.001 per call. Params: from, to, amount?, date?

### Clinical Trials (ClinicalTrials.gov) (clinical-trials)

Search 500,000+ registered clinical studies by condition, drug, sponsor, place, status and phase; full study records and recruitment counts. Docs: https://fourzerotwo.si/apis/clinical-trials

- [Search clinical trials](https://fourzerotwo.si/v1/clinical-trials/search) [free]: Find studies by condition, intervention (drug/device), location, sponsor or free text, optionally filtered by status and phase. — $0.003 per call. Params: condition?, intervention?, location?, sponsor?, q?, status?, phase?, limit?, page_token?
- [Study by NCT number](https://fourzerotwo.si/v1/clinical-trials/study) [free]: One study: title, status, phase, conditions, interventions, sponsor, enrolment, dates, eligibility basics, primary outcomes, countries, whether results are posted. — $0.002 per call. Params: nct_id
- [Recruiting trials near a place](https://fourzerotwo.si/v1/clinical-trials/recruiting) [free]: Studies recruiting (or about to) for a condition in a city, region or country, with the matching trial sites. — $0.003 per call. Params: condition, location, limit?, page_token?
- [Trial counts by status](https://fourzerotwo.si/v1/clinical-trials/stats) [sample]: How many registered studies for a condition are recruiting, active, completed, terminated or withdrawn. — $0.003 per call. Params: condition

### Crossref DOI Metadata (crossref)

Resolve DOIs to bibliographic metadata and search scholarly works, journals and funders. Docs: https://fourzerotwo.si/apis/crossref

- [DOI lookup](https://fourzerotwo.si/v1/crossref/doi) [free]: Title, authors, journal, dates, references count and licence for a DOI. — $0.002 per call. Params: doi
- [Search works](https://fourzerotwo.si/v1/crossref/search) [free]: Bibliographic search across Crossref works. — $0.003 per call. Params: q
- [Journal by ISSN](https://fourzerotwo.si/v1/crossref/journal) [free]: Journal title, publisher and DOI counts by ISSN. — $0.002 per call. Params: issn
- [Search funders](https://fourzerotwo.si/v1/crossref/funders) [free]: Research funders by name, with Funder Registry ids. — $0.002 per call. Params: q
- [Search publishers](https://fourzerotwo.si/v1/crossref/members) [free]: Crossref member publishers by name. — $0.002 per call. Params: q

### Domains & DNS (domains)

Is a domain available, who registered it and when, its DNS records, and how well its email is authenticated (SPF, DMARC, MX). Docs: https://fourzerotwo.si/apis/domains

- [Domain availability](https://fourzerotwo.si/v1/domains/availability) [sample]: Registered or available, straight from the TLD registry. — $0.002 per call. Params: domain
- [Domain registration facts](https://fourzerotwo.si/v1/domains/facts) [sample]: Registrar, created, expiry, age, status codes, nameservers and DNSSEC. — $0.002 per call. Params: domain
- [DNS records](https://fourzerotwo.si/v1/domains/dns) [sample]: A, AAAA, MX, NS, TXT, CNAME and CAA records (or one type). — $0.001 per call. Params: domain, type?
- [IP owner](https://fourzerotwo.si/v1/domains/ip-owner) [sample]: Network, organisation, range, country and abuse email for an IP, from the regional internet registry. — $0.002 per call. Params: ip
- [DMCA agent](https://fourzerotwo.si/v1/domains/dmca-agent) [sample]: Published DMCA / abuse contact (email or form) for a major platform, host, CDN or registrar. — $0.002 per call. Params: domain
- [Where to report a site](https://fourzerotwo.si/v1/domains/abuse-contacts) [sample]: Everyone to send an abuse or takedown report to for a site: platform agent, hosting network (+ abuse email, CDN flag) and registrar. — $0.005 per call. Params: domain
- [Email authentication check](https://fourzerotwo.si/v1/domains/email-auth) [sample]: MX, SPF and DMARC for a domain, the mail provider, issues found and a grade. — $0.003 per call. Params: domain
- [Domain name ideas](https://fourzerotwo.si/v1/domains/ideas) [free]: Rule-based domain candidates for a keyword: exact, stopword-free, hyphenated, prefixed and suffixed, across chosen TLDs, with a trademark flag. — $0.002 per call. Params: keyword, tlds?, prefixes?, suffixes?, trademarks?

### ECB Rates (ecb)

Euro foreign exchange reference rates, ECB policy rates, €STR and euro area inflation. Docs: https://fourzerotwo.si/apis/ecb

- [EUR FX reference rate](https://fourzerotwo.si/v1/ecb/fx-latest) [free]: Latest euro reference rate against a currency (e.g. USD, GBP, JPY). — $0.001 per call. Params: currency
- [EUR FX history](https://fourzerotwo.si/v1/ecb/fx-history) [free]: Daily euro reference rates for a currency over a date range. — $0.002 per call. Params: currency, startPeriod, endPeriod?
- [All EUR FX rates](https://fourzerotwo.si/v1/ecb/fx-all-latest) [free]: Latest euro reference rates for every published currency. — $0.002 per call. Params: none
- [€STR](https://fourzerotwo.si/v1/ecb/estr) [free]: Euro short-term rate (€STR), recent daily values. — $0.001 per call. Params: none
- [Deposit facility rate](https://fourzerotwo.si/v1/ecb/deposit-rate) [free]: ECB deposit facility rate, recent changes. — $0.001 per call. Params: none
- [Main refinancing rate](https://fourzerotwo.si/v1/ecb/main-refi-rate) [free]: ECB main refinancing operations rate, recent changes. — $0.001 per call. Params: none
- [Marginal lending facility rate](https://fourzerotwo.si/v1/ecb/marginal-lending-rate) [free]: ECB marginal lending facility rate, recent changes. — $0.001 per call. Params: none
- [Euro area mortgage rate](https://fourzerotwo.si/v1/ecb/mortgage-rate) [free]: Composite cost of borrowing for households for house purchase, euro area, %, monthly. — $0.001 per call. Params: none
- [Euro area unemployment](https://fourzerotwo.si/v1/ecb/unemployment) [free]: Euro area unemployment rate, ages 15-74, %, monthly. — $0.001 per call. Params: none
- [Euro area 2-year yield](https://fourzerotwo.si/v1/ecb/yield-2y) [free]: AAA-rated euro area government bond yield curve, 2-year spot rate, recent days. — $0.001 per call. Params: none
- [M3 money supply growth](https://fourzerotwo.si/v1/ecb/m3-growth) [free]: Euro area monetary aggregate M3, annual growth rate, recent months. — $0.001 per call. Params: none
- [Euro area 10-year yield](https://fourzerotwo.si/v1/ecb/yield-10y) [free]: AAA-rated euro area government bond yield curve, 10-year spot rate, recent days. — $0.001 per call. Params: none

### EU Public Tenders (TED) (eu-tenders)

Every EU public procurement notice from TED: search by keyword, buyer country, CPV code and date; competitions and awards with winners. Docs: https://fourzerotwo.si/apis/eu-tenders

- [Search EU tenders](https://fourzerotwo.si/v1/eu-tenders/search) [free]: TED notices by keywords, buyer country (ISO alpha-3), CPV code, publication date and type (competition or award), newest first. — $0.003 per call. Params: q?, country?, cpv?, published_from?, type?, active_only?, limit?, page?
- [EU notice](https://fourzerotwo.si/v1/eu-tenders/notice) [free]: One TED notice by publication number: title, buyer, value, deadline, CPV, place of performance, description and winners. — $0.002 per call. Params: id

### Earthquakes (USGS) (earthquakes)

Worldwide earthquakes in near real time: recent feeds, regional search and counts. Docs: https://fourzerotwo.si/apis/earthquakes

- [Significant this week](https://fourzerotwo.si/v1/earthquakes/significant-week) [free]: Significant earthquakes worldwide in the past 7 days. — $0.001 per call. Params: none
- [M4.5+ this week](https://fourzerotwo.si/v1/earthquakes/m45-week) [free]: Magnitude 4.5+ earthquakes worldwide in the past 7 days. — $0.001 per call. Params: none
- [M2.5+ today](https://fourzerotwo.si/v1/earthquakes/m25-day) [free]: Magnitude 2.5+ earthquakes worldwide in the past day. — $0.001 per call. Params: none
- [Earthquakes near a point](https://fourzerotwo.si/v1/earthquakes/near) [free]: Earthquakes within a radius of a point since a date. — $0.002 per call. Params: latitude, longitude, maxradiuskm?, starttime?, minmagnitude?
- [Count earthquakes](https://fourzerotwo.si/v1/earthquakes/count) [free]: How many earthquakes match a time and magnitude window. — $0.001 per call. Params: starttime, minmagnitude?
- [Earthquake detail](https://fourzerotwo.si/v1/earthquakes/event) [free]: Full detail for one earthquake by USGS event id. — $0.001 per call. Params: eventid

### Eurostat (eurostat)

Official EU statistics: GDP, inflation, unemployment, population, house prices and any Eurostat dataset. Docs: https://fourzerotwo.si/apis/eurostat

- [Any dataset](https://fourzerotwo.si/v1/eurostat/dataset) [free]: Query any Eurostat dataset code with a country filter (other filters as query params). — $0.003 per call. Params: dataset, geo?
- [Unemployment rate](https://fourzerotwo.si/v1/eurostat/unemployment) [free]: Unemployment rate, total, seasonally adjusted, % of labour force, monthly. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [GDP](https://fourzerotwo.si/v1/eurostat/gdp) [free]: GDP at market prices, current prices, € million, annual. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [GDP growth](https://fourzerotwo.si/v1/eurostat/gdp-growth) [free]: Real GDP growth rate, chain-linked volumes, % change on previous year. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Population](https://fourzerotwo.si/v1/eurostat/population) [free]: Population on 1 January, total. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [House price index](https://fourzerotwo.si/v1/eurostat/house-prices) [free]: House price index, total, annual rate of change, quarterly. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Government debt](https://fourzerotwo.si/v1/eurostat/government-debt) [free]: General government gross debt, % of GDP, annual. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Minimum wage](https://fourzerotwo.si/v1/eurostat/minimum-wage) [free]: Monthly statutory minimum wage, euro, half-yearly. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [HICP inflation](https://fourzerotwo.si/v1/eurostat/inflation) [free]: Annual HICP inflation rate, all items, monthly. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [HICP inflation (ECOICOP 2)](https://fourzerotwo.si/v1/eurostat/hicp-annual) [free]: HICP all-items annual rate of change, monthly, from the current ECOICOP v2 dataset. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Core inflation](https://fourzerotwo.si/v1/eurostat/core-inflation) [free]: HICP excluding energy, food, alcohol and tobacco, annual rate of change, monthly. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Energy inflation](https://fourzerotwo.si/v1/eurostat/energy-inflation) [free]: HICP energy, annual rate of change, monthly. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Food inflation](https://fourzerotwo.si/v1/eurostat/food-inflation) [free]: HICP food including alcohol and tobacco, annual rate of change, monthly. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Services inflation](https://fourzerotwo.si/v1/eurostat/services-inflation) [free]: HICP services, annual rate of change, monthly. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Youth unemployment rate](https://fourzerotwo.si/v1/eurostat/youth-unemployment) [free]: Unemployment rate, under 25, seasonally adjusted, % of labour force, monthly. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [GDP per capita in PPS](https://fourzerotwo.si/v1/eurostat/gdp-per-capita-pps) [free]: GDP per capita in purchasing power standards, EU27=100, annual. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Employment rate](https://fourzerotwo.si/v1/eurostat/employment-rate) [free]: Employment rate, ages 20-64, % of population, annual. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Renewable energy share](https://fourzerotwo.si/v1/eurostat/renewables-share) [free]: Share of energy from renewable sources in gross final energy consumption, %, annual. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Government deficit/surplus](https://fourzerotwo.si/v1/eurostat/government-deficit) [free]: General government net lending (+) / borrowing (-), % of GDP, annual. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Economic sentiment indicator](https://fourzerotwo.si/v1/eurostat/economic-sentiment) [free]: Economic sentiment indicator, seasonally adjusted, monthly. JSON-stat, latest periods. — $0.002 per call. Params: geo
- [Industrial production](https://fourzerotwo.si/v1/eurostat/industrial-production) [free]: Production in industry (excl. construction), index 2021=100, calendar and seasonally adjusted, monthly. JSON-stat, latest periods. — $0.002 per call. Params: geo

### GB Electricity Grid (gb-electricity)

Live and forecast Great Britain electricity data: generation mix, demand, wind, prices, interconnectors, margins, frequency and plant outages. Docs: https://fourzerotwo.si/apis/gb-electricity

- [Generation mix now](https://fourzerotwo.si/v1/gb-electricity/generation-now) [free]: Current GB generation by fuel type (MW and %), latest 5-minute reading and last half hour / 24 hours. — $0.001 per call. Params: none
- [Generation by type, 24h](https://fourzerotwo.si/v1/gb-electricity/generation-today) [free]: Actual generation by production type over the last 24 hours (solar, wind, nuclear, gas…). — $0.001 per call. Params: none
- [Generation mix history](https://fourzerotwo.si/v1/gb-electricity/generation-history) [free]: Half-hourly generation by fuel type, recent history. — $0.002 per call. Params: none
- [Interconnector flows](https://fourzerotwo.si/v1/gb-electricity/interconnectors) [free]: Latest half-hourly flows on each interconnector (France, Norway, Netherlands, Belgium, Ireland, Denmark…), newest first. — $0.002 per call. Params: none
- [Interconnectors](https://fourzerotwo.si/v1/gb-electricity/interconnector-list) [free]: Every GB interconnector and the bidding zone it connects to. — $0.0005 per call. Params: none
- [Demand outturn](https://fourzerotwo.si/v1/gb-electricity/demand-outturn) [free]: Initial national and transmission demand, half-hourly, last ~2 days. — $0.001 per call. Params: none
- [Daily demand](https://fourzerotwo.si/v1/gb-electricity/demand-daily) [free]: Total national demand per day, recent days. — $0.001 per call. Params: none
- [Peak demand](https://fourzerotwo.si/v1/gb-electricity/demand-peak) [free]: Daily peak transmission demand. — $0.001 per call. Params: none
- [Demand forecast, day ahead](https://fourzerotwo.si/v1/gb-electricity/demand-forecast) [free]: Half-hourly national and transmission demand forecast for the next day. — $0.001 per call. Params: none
- [Demand forecast, 14 days](https://fourzerotwo.si/v1/gb-electricity/demand-forecast-14d) [free]: Daily peak demand forecast for the next two weeks. — $0.001 per call. Params: none
- [Demand forecast, 52 weeks](https://fourzerotwo.si/v1/gb-electricity/demand-forecast-52w) [free]: Weekly peak demand forecast for the year ahead. — $0.001 per call. Params: none
- [Wind forecast](https://fourzerotwo.si/v1/gb-electricity/wind-forecast) [free]: Current wind generation forecast, half-hourly, for the next ~2 days. — $0.001 per call. Params: none
- [Wind forecast daily peak](https://fourzerotwo.si/v1/gb-electricity/wind-forecast-peak) [free]: Forecast peak wind generation for each day. — $0.001 per call. Params: none
- [Indicated demand & generation](https://fourzerotwo.si/v1/gb-electricity/indicated-forecast) [free]: Day-ahead indicated demand, generation, imbalance and margin. — $0.001 per call. Params: none
- [Generation capacity, 14 days](https://fourzerotwo.si/v1/gb-electricity/capacity-forecast) [free]: Forecast available generation capacity by fuel type for the next two weeks. — $0.002 per call. Params: none
- [Margin forecast](https://fourzerotwo.si/v1/gb-electricity/margin-forecast) [free]: Daily operating margin forecast (OCNMFD2), days 2–14. — $0.001 per call. Params: none
- [Surplus forecast](https://fourzerotwo.si/v1/gb-electricity/surplus-forecast) [free]: Daily generating plant surplus forecast, days 2–14. — $0.001 per call. Params: none
- [Imbalance (system) prices](https://fourzerotwo.si/v1/gb-electricity/system-prices) [free]: System sell/buy price and net imbalance volume for every settlement period of a day. — $0.002 per call. Params: date
- [Latest balancing acceptances](https://fourzerotwo.si/v1/gb-electricity/acceptances-latest) [free]: Most recent bid-offer acceptances issued by the system operator. — $0.002 per call. Params: none
- [System frequency](https://fourzerotwo.si/v1/gb-electricity/frequency) [free]: Grid frequency (Hz) every 15 seconds, last hour. — $0.001 per call. Params: none
- [GB temperature](https://fourzerotwo.si/v1/gb-electricity/temperature) [free]: Daily GB average temperature against seasonal reference values (drives demand). — $0.001 per call. Params: none
- [System warnings](https://fourzerotwo.si/v1/gb-electricity/warnings) [free]: System operator warnings and notices (margin notices, SO-SO trades, electricity capacity warnings). — $0.001 per call. Params: none
- [REMIT outage notices](https://fourzerotwo.si/v1/gb-electricity/outages) [free]: Outage and unavailability messages published between two times (ids; fetch each with outage). — $0.002 per call. Params: from, to
- [REMIT outage detail](https://fourzerotwo.si/v1/gb-electricity/outage) [free]: One outage notice: plant, fuel, normal/available capacity, cause and event window. — $0.001 per call. Params: id
- [Wind & solar outturn](https://fourzerotwo.si/v1/gb-electricity/wind-solar) [free]: Actual or estimated wind (on/offshore) and solar generation between two dates. — $0.002 per call. Params: from, to
- [Wholesale market index price](https://fourzerotwo.si/v1/gb-electricity/market-index) [free]: Market Index Data: half-hourly wholesale price (£/MWh) and volume between two dates. — $0.002 per call. Params: from, to

### Global LEI Register (gleif)

Legal Entity Identifiers worldwide: lookup, name search, corporate parents and children, ISIN and BIC mapping. Docs: https://fourzerotwo.si/apis/gleif

- [LEI lookup](https://fourzerotwo.si/v1/gleif/lookup) [free]: Legal name, addresses, jurisdiction, legal form, status and registration for one LEI. — $0.003 per call. Params: lei
- [Search by legal name](https://fourzerotwo.si/v1/gleif/search) [free]: Entities whose legal name matches. — $0.003 per call. Params: name
- [Fuzzy name match](https://fourzerotwo.si/v1/gleif/fuzzy) [free]: Best fuzzy matches of a name to LEIs — for messy company names. — $0.003 per call. Params: q
- [Autocomplete](https://fourzerotwo.si/v1/gleif/autocomplete) [free]: Name autocompletion across the LEI index. — $0.002 per call. Params: q
- [Direct parent](https://fourzerotwo.si/v1/gleif/direct-parent) [free]: The direct accounting parent of an entity. — $0.003 per call. Params: lei
- [Ultimate parent](https://fourzerotwo.si/v1/gleif/ultimate-parent) [free]: The ultimate accounting parent of an entity. — $0.003 per call. Params: lei
- [Direct children](https://fourzerotwo.si/v1/gleif/direct-children) [free]: Entities directly owned by this entity. — $0.003 per call. Params: lei
- [Branches](https://fourzerotwo.si/v1/gleif/branches) [free]: Registered branches of an entity. — $0.003 per call. Params: lei
- [LEI by ISIN](https://fourzerotwo.si/v1/gleif/by-isin) [free]: Which entity issued a security, by ISIN. — $0.003 per call. Params: isin
- [LEI by BIC](https://fourzerotwo.si/v1/gleif/by-bic) [free]: Which entity holds a SWIFT/BIC code. — $0.003 per call. Params: bic
- [ISINs issued](https://fourzerotwo.si/v1/gleif/isins) [free]: Securities (ISINs) issued by an entity. — $0.003 per call. Params: lei

### Global Weather (MET Norway) (global-weather)

Worldwide weather forecasts, sunrise, sunset and moon phase, and ocean forecasts for any point. Docs: https://fourzerotwo.si/apis/global-weather

- [Detailed forecast](https://fourzerotwo.si/v1/global-weather/forecast-complete) [free]: Full forecast including humidity, pressure, fog, UV and precipitation ranges. — $0.003 per call. Params: lat, lon
- [Sunrise and sunset](https://fourzerotwo.si/v1/global-weather/sun) [free]: Sunrise, sunset and solar noon for a point and date. — $0.001 per call. Params: lat, lon, date?
- [Moon phase and times](https://fourzerotwo.si/v1/global-weather/moon) [free]: Moonrise, moonset and moon phase for a point and date. — $0.001 per call. Params: lat, lon, date?
- [Ocean forecast](https://fourzerotwo.si/v1/global-weather/ocean) [free]: Wave height and direction, sea temperature and currents (Nordic and North Sea waters). — $0.002 per call. Params: lat, lon
- [Forecast](https://fourzerotwo.si/v1/global-weather/forecast) [free]: Hourly-then-6-hourly forecast for ~9 days: temperature, wind, cloud, precipitation, symbol. — $0.002 per call. Params: lat, lon

### IMEI & TAC decoder (imei)

Validate an IMEI and decode it to brand, model and device type from our own TAC database. Docs: https://fourzerotwo.si/apis/imei

- [Database coverage](https://fourzerotwo.si/v1/imei/coverage) [free]: How many TACs, models and brands the device database holds, and when it last changed. — $0.0005 per call. Params: none
- [Decode IMEI](https://fourzerotwo.si/v1/imei/decode) [sample]: Validate an IMEI and decode it to brand, model, model code and device type. Charged whether or not the TAC is found. — $0.012 per call. Params: imei
- [Validate IMEI](https://fourzerotwo.si/v1/imei/validate) [free]: Format and Luhn check-digit validation for an IMEI or IMEISV, split into TAC, serial and check digit. No lookup. — $0.0005 per call. Params: imei
- [TAC lookup](https://fourzerotwo.si/v1/imei/tac) [sample]: Device brand, model, model code and type for an 8-digit TAC. Charged whether or not the TAC is found. — $0.012 per call. Params: tac
- [Batch decode](https://fourzerotwo.si/v1/imei/batch) [sample]: Validate and decode up to 50 IMEIs in one call. — $0.4 per call. Params: imeis

### IP Geolocation & ASN (ip-geolocation)

IP address to country, continent, network owner (ASN) and a hosting/cloud flag, for IPv4 and IPv6. Docs: https://fourzerotwo.si/apis/ip-geolocation

- [IP lookup](https://fourzerotwo.si/v1/ip-geolocation/lookup) [free]: Country, continent, EU membership, network block, ASN, organisation and hosting flag for one IP. — $0.001 per call. Params: ip
- [IP to country](https://fourzerotwo.si/v1/ip-geolocation/country) [free]: Country and continent for one IP. — $0.0005 per call. Params: ip
- [IP to network owner](https://fourzerotwo.si/v1/ip-geolocation/asn) [free]: ASN, organisation and hosting flag for one IP. — $0.0005 per call. Params: ip
- [Batch lookup](https://fourzerotwo.si/v1/ip-geolocation/batch) [sample]: Full lookup for up to 100 IPs in one call. — $0.02 per call. Params: ips

### London Transport (london-transport)

Live Tube, bus, rail and road status, arrivals, journey planning and bike docks across London. Docs: https://fourzerotwo.si/apis/london-transport

- [Tube status](https://fourzerotwo.si/v1/london-transport/tube-status) [sample]: Live status of every Tube line. — $0.001 per call. Params: none
- [Status by mode](https://fourzerotwo.si/v1/london-transport/mode-status) [sample]: Live status of every line for a mode (tube, overground, elizabeth-line, dlr, tram, bus). — $0.001 per call. Params: mode
- [Line status](https://fourzerotwo.si/v1/london-transport/line-status) [sample]: Live status and disruption for one line. — $0.001 per call. Params: line
- [Line arrivals](https://fourzerotwo.si/v1/london-transport/line-arrivals) [sample]: Live arrival predictions for every stop on a line. — $0.002 per call. Params: line
- [Stop arrivals](https://fourzerotwo.si/v1/london-transport/stop-arrivals) [sample]: Live arrival predictions at a stop or station. — $0.002 per call. Params: stop
- [Search stops](https://fourzerotwo.si/v1/london-transport/stop-search) [sample]: Find stations and stops by name. — $0.001 per call. Params: q
- [Stop details](https://fourzerotwo.si/v1/london-transport/stop) [sample]: Lines, modes, facilities and child stops of a station. — $0.001 per call. Params: stop
- [Stops near a point](https://fourzerotwo.si/v1/london-transport/stops-near) [sample]: Stations and stops within a radius of a point. — $0.002 per call. Params: lat, lon, radius?
- [Plan a journey](https://fourzerotwo.si/v1/london-transport/journey) [sample]: Journey options between two places (postcodes, stop ids or "lat,lon"). — $0.003 per call. Params: from, to
- [Cycle docks](https://fourzerotwo.si/v1/london-transport/bike-points) [sample]: Every Santander Cycles docking station with live bike and space counts. — $0.002 per call. Params: none
- [Cycle dock](https://fourzerotwo.si/v1/london-transport/bike-point) [sample]: Live bikes, e-bikes and empty docks at one station. — $0.001 per call. Params: id
- [Road corridor status](https://fourzerotwo.si/v1/london-transport/road-status) [sample]: Live status of major London road corridors. — $0.001 per call. Params: none
- [Road disruptions](https://fourzerotwo.si/v1/london-transport/road-disruption) [sample]: Current disruption on a road corridor, e.g. "a2", "a406". — $0.002 per call. Params: road
- [Air quality forecast](https://fourzerotwo.si/v1/london-transport/air-quality) [sample]: London air quality forecast for today and tomorrow. — $0.001 per call. Params: none

### NHS Organisations (ODS) (nhs-organisations)

Every NHS organisation and site: GP practices, pharmacies, trusts, ICBs, dental and optical practices, with codes, roles, addresses and relationships. Docs: https://fourzerotwo.si/apis/nhs-organisations

- [Organisation by ODS code](https://fourzerotwo.si/v1/nhs-organisations/organisation) [free]: Name, status, address, phone/website, roles and relationships (commissioner, operator, geography) for one ODS code. — $0.001 per call. Params: code
- [Search organisations](https://fourzerotwo.si/v1/nhs-organisations/search) [free]: Find NHS organisations by name, postcode (or district) and role: gp, pharmacy, trust, trust-site, icb, dental, optical, care-home, hospice, or a role code. — $0.001 per call. Params: name?, postcode?, role?, status?, limit?
- [Role codes](https://fourzerotwo.si/v1/nhs-organisations/roles) [free]: Every ODS role code with its name, and the friendly aliases search accepts. — $0.0005 per call. Params: none

### Product Recalls & Safety Alerts (product-recalls)

UK and US product recalls, food allergy alerts, medicine and medical-device alerts, and UK air, marine and rail accident reports. Docs: https://fourzerotwo.si/apis/product-recalls

- [Search all recalls](https://fourzerotwo.si/v1/product-recalls/search) [free]: Check a product, brand or ingredient across UK product recalls, MHRA alerts, FSA food alerts and US CPSC recalls in one call; newest first. — $0.003 per call. Params: q, limit?
- [UK product safety alerts & recalls](https://fourzerotwo.si/v1/product-recalls/uk-products) [free]: OPSS product safety alerts, reports and recalls (toys, electricals, cosmetics…): risk level, category, measures taken (recall, withdrawal, marketplace takedown). — $0.002 per call. Params: q?, category?, risk?, since?, limit?
- [UK medicine & device alerts](https://fourzerotwo.si/v1/product-recalls/uk-medical) [free]: MHRA drug and medical device alerts: recalls, field safety notices and device safety information, with medical specialisms affected. — $0.002 per call. Params: q?, alert_type?, since?, limit?
- [UK food & allergy alerts](https://fourzerotwo.si/v1/product-recalls/uk-food) [free]: Food Standards Agency allergy alerts, product recall information notices and food alerts for action, newest first. — $0.001 per call. Params: type?, q?, since?, limit?
- [UK food alert detail](https://fourzerotwo.si/v1/product-recalls/uk-food-alert) [free]: One FSA alert in full: products, pack sizes, batch and best-before codes, allergens, risk, action taken and consumer advice. — $0.001 per call. Params: id
- [UK accident investigation reports](https://fourzerotwo.si/v1/product-recalls/uk-accidents) [free]: AAIB (air), MAIB (marine) or RAIB (rail) investigation reports and bulletins, newest first. — $0.002 per call. Params: body, q?, since?, limit?
- [US consumer product recalls](https://fourzerotwo.si/v1/product-recalls/us-products) [free]: US CPSC recalls by product name, manufacturer, UPC or hazard (default: last 90 days), newest first, with units, remedies, retailers and country of manufacture. — $0.002 per call. Params: q?, manufacturer?, upc?, hazard?, since?, limit?

### PubMed (pubmed)

Search 37M+ biomedical citations and fetch article summaries from PubMed. Docs: https://fourzerotwo.si/apis/pubmed

- [Search PubMed](https://fourzerotwo.si/v1/pubmed/search) [sample]: PubMed ids matching a query (supports PubMed query syntax). — $0.002 per call. Params: term
- [Article summaries](https://fourzerotwo.si/v1/pubmed/summary) [sample]: Title, authors, journal, date and DOI for comma-separated PubMed ids. — $0.002 per call. Params: id
- [Search PubMed Central](https://fourzerotwo.si/v1/pubmed/pmc-search) [sample]: Free full-text article ids in PubMed Central. — $0.002 per call. Params: term
- [Search clinical trial records](https://fourzerotwo.si/v1/pubmed/clinical-trials-search) [sample]: PubMed citations that are clinical trial reports for a query. — $0.002 per call. Params: term

### Research Organisations (ROR) (ror)

Identify universities, research institutes, funders and hospitals: search, match messy affiliation strings, look up by GRID/ISNI/Wikidata/Funder ID. Docs: https://fourzerotwo.si/apis/ror

- [Search organisations](https://fourzerotwo.si/v1/ror/search) [free]: Find research organisations by name, acronym or keyword, optionally filtered by country and type. — $0.001 per call. Params: q, country?, type?
- [Organisation by ROR id](https://fourzerotwo.si/v1/ror/organisation) [free]: Full record: names and aliases, types, status, founding year, location, website, domains, external ids. — $0.0005 per call. Params: id
- [Match an affiliation string](https://fourzerotwo.si/v1/ror/affiliation) [free]: Turn a free-text affiliation (as printed on a paper) into the matching organisation, with ROR's confidence flag and candidates. — $0.001 per call. Params: affiliation
- [Lookup by external id](https://fourzerotwo.si/v1/ror/external-id) [free]: Find the organisation for a GRID id, ISNI, Wikidata QID or Crossref Funder ID. — $0.001 per call. Params: id
- [Parents & children](https://fourzerotwo.si/v1/ror/relationships) [free]: Parent, child and related organisations of a ROR record. — $0.001 per call. Params: id

### RxNorm Drug Names (rxnorm)

Normalise US drug names: name or misspelling to RxCUI, clinical and branded drugs, ingredients and brands, NDC lookups and concept properties. Docs: https://fourzerotwo.si/apis/rxnorm

- [Drug name to RxCUI](https://fourzerotwo.si/v1/rxnorm/rxcui) [free]: Exact (normalised) match of a drug name to its RxNorm concept id(s). — $0.001 per call. Params: name
- [Approximate drug match](https://fourzerotwo.si/v1/rxnorm/approximate) [free]: Ranked RxNorm candidates for a misspelled or partial drug name. — $0.002 per call. Params: term, limit?
- [Spelling suggestions](https://fourzerotwo.si/v1/rxnorm/spelling) [free]: Correctly spelled RxNorm drug names close to the input. — $0.001 per call. Params: name
- [Clinical & branded drugs](https://fourzerotwo.si/v1/rxnorm/drugs) [free]: Every clinical drug, branded drug and pack for an ingredient or brand name, grouped by RxNorm term type. — $0.002 per call. Params: name
- [Related concepts](https://fourzerotwo.si/v1/rxnorm/related) [free]: Ingredients, brand names, dose forms and clinical/branded drugs related to an RxCUI. — $0.002 per call. Params: rxcui
- [Concept properties](https://fourzerotwo.si/v1/rxnorm/properties) [free]: Name, synonym, term type and active/obsolete status of an RxCUI. — $0.001 per call. Params: rxcui
- [NDC to RxCUI](https://fourzerotwo.si/v1/rxnorm/ndc) [free]: National Drug Code (10 or 11 digits) to its RxNorm concept and status. — $0.001 per call. Params: ndc
- [NDCs for an RxCUI](https://fourzerotwo.si/v1/rxnorm/ndcs) [free]: Active National Drug Codes for an RxNorm clinical or branded drug. — $0.001 per call. Params: rxcui

### SEC EDGAR (sec-edgar)

US public company filings and XBRL financials: submissions, company facts, single concepts and cross-company frames. Docs: https://fourzerotwo.si/apis/sec-edgar

- [Company filings](https://fourzerotwo.si/v1/sec-edgar/submissions) [free]: Company profile, tickers, exchanges and its recent filings list. — $0.005 per call. Params: cik
- [Company financials (XBRL)](https://fourzerotwo.si/v1/sec-edgar/company-facts) [free]: Every XBRL financial fact a company has reported. Large response. — $0.01 per call. Params: cik
- [Cross-company frame](https://fourzerotwo.si/v1/sec-edgar/frames) [free]: One concept for every company for a period, e.g. Revenues for CY2025. — $0.01 per call. Params: concept, period
- [One financial line item](https://fourzerotwo.si/v1/sec-edgar/company-concept) [free]: All reported values of one concept for a company, e.g. Revenues, NetIncomeLoss, Assets. — $0.005 per call. Params: cik, concept

### SEC Ticker Map (sec-tickers)

Every US-listed ticker mapped to its company name and SEC CIK. Docs: https://fourzerotwo.si/apis/sec-tickers

- [Ticker → CIK map](https://fourzerotwo.si/v1/sec-tickers/all) [free]: All tickers with CIK and company name (~10k rows). — $0.002 per call. Params: none
- [Tickers with exchange](https://fourzerotwo.si/v1/sec-tickers/exchange) [free]: All tickers with CIK, name and listing exchange. — $0.002 per call. Params: none

### SEO Tools (seo)

On-page SEO audit of any URL, link extraction, robots.txt rules for any crawler, and keyword intent. Docs: https://fourzerotwo.si/apis/seo

- [robots.txt check](https://fourzerotwo.si/v1/seo/robots-check) [sample]: Whether a crawler (Googlebot, GPTBot, ClaudeBot…) may fetch a URL, the rule that decided it, and declared sitemaps. — $0.002 per call. Params: url, user_agent?
- [On-page SEO audit](https://fourzerotwo.si/v1/seo/page-audit) [sample]: Title, meta, H1, canonical, noindex, hreflang, structured data, OG tags, word count, links, alt text, issues and a score. — $0.005 per call. Params: url
- [Extract links](https://fourzerotwo.si/v1/seo/links) [sample]: Internal and external links on a page with anchor text and nofollow flags. — $0.003 per call. Params: url
- [Keyword intent](https://fourzerotwo.si/v1/seo/keyword-intent) [sample]: Classify a search keyword as transactional, commercial, navigational or informational. — $0.0005 per call. Params: keyword

### Sanctions Screening (sanctions)

Fuzzy-screen a person, company or vessel against the US OFAC SDN, UK, EU and UN sanctions lists in one call. Docs: https://fourzerotwo.si/apis/sanctions

- [Screen against the UK list](https://fourzerotwo.si/v1/sanctions/screen-uk) [sample]: Potential matches on the UK Sanctions List only (FCDO). — $0.01 per call. Params: name, threshold?
- [Screen against OFAC SDN](https://fourzerotwo.si/v1/sanctions/screen-us) [sample]: Potential matches on the US OFAC SDN list only. — $0.01 per call. Params: name, threshold?
- [Listed entry detail](https://fourzerotwo.si/v1/sanctions/entry) [sample]: Full record for a matched entry: all aliases, programmes, countries, dates of birth and remarks. — $0.005 per call. Params: list?, list_id?, entry_id?
- [List versions](https://fourzerotwo.si/v1/sanctions/lists) [sample]: Which lists are mirrored, entry counts, list dates and last sync time. — $0.001 per call. Params: none
- [Screen a name](https://fourzerotwo.si/v1/sanctions/screen) [sample]: Potential matches across all four lists with score, list, programmes, countries and dates of birth. — $0.02 per call. Params: name, type?, birth_year?, country?, lists?, threshold?
- [Screen a crypto wallet](https://fourzerotwo.si/v1/sanctions/wallet-screen) [free]: Whether a crypto address (BTC, ETH/EVM, TRX, USDT and others) is listed against a designated party on the OFAC SDN list. — $0.002 per call. Params: address

### Scholarly Works (OpenAlex) (scholarly)

Search 250M+ papers, authors, institutions, journals and topics with citation counts. Docs: https://fourzerotwo.si/apis/scholarly

- [Search papers](https://fourzerotwo.si/v1/scholarly/works-search) [free]: Full-text search of scholarly works, with citations, authors and open-access links. — $0.003 per call. Params: search
- [Paper by id or DOI](https://fourzerotwo.si/v1/scholarly/work) [free]: One work by OpenAlex id (W…) or "doi:10.…". — $0.002 per call. Params: id
- [Search authors](https://fourzerotwo.si/v1/scholarly/authors-search) [free]: Researchers by name with h-index, works and citation counts. — $0.002 per call. Params: search
- [Author](https://fourzerotwo.si/v1/scholarly/author) [free]: One researcher by OpenAlex id or ORCID. — $0.002 per call. Params: id
- [Search institutions](https://fourzerotwo.si/v1/scholarly/institutions-search) [free]: Universities and research institutions with output stats. — $0.002 per call. Params: search
- [Search journals](https://fourzerotwo.si/v1/scholarly/sources-search) [free]: Journals and repositories with impact stats. — $0.002 per call. Params: search
- [Search topics](https://fourzerotwo.si/v1/scholarly/topics-search) [free]: Research topics and fields. — $0.002 per call. Params: search
- [Autocomplete works](https://fourzerotwo.si/v1/scholarly/autocomplete) [free]: Fast title autocomplete across works. — $0.001 per call. Params: q
- [Papers citing a paper](https://fourzerotwo.si/v1/scholarly/citing-works) [free]: Works that cite a given OpenAlex work id. — $0.003 per call. Params: work

### Schools in England (schools)

Every school and education establishment in England: type, phase, ages, pupils, free school meals, trust, address and location — search by name, postcode or local authority, or find schools near a postcode. Docs: https://fourzerotwo.si/apis/schools

- [School by URN](https://fourzerotwo.si/v1/schools/school) [free]: Full register record for one establishment: type, status, phase, ages, capacity, pupils, FSM, trust, SEN provision, address, LA, ward, constituency. — $0.001 per call. Params: urn
- [Search schools](https://fourzerotwo.si/v1/schools/search) [free]: Find schools by name, postcode or district, and/or local authority (name or code), optionally by phase; open schools by default. — $0.001 per call. Params: name?, postcode?, la?, phase?, status?, limit?
- [Schools near a postcode](https://fourzerotwo.si/v1/schools/near) [free]: Open schools within a radius of a postcode (default 3 km, max 15), nearest first, optionally by phase. — $0.002 per call. Params: postcode, radius_km?, phase?, limit?

### Time Zones & Business Days (time)

DST-aware time-zone conversion that flags ambiguous and skipped local times, zone facts with the next clock change, and business days for 40+ countries. Docs: https://fourzerotwo.si/apis/time

- [Convert a local time between zones](https://fourzerotwo.si/v1/time/convert) [free]: Convert a wall-clock time from one IANA zone to another; says when it is ambiguous (clocks go back) or never happens (clocks go forward). — $0.001 per call. Params: time, from, to
- [Current time in a zone](https://fourzerotwo.si/v1/time/now) [free]: Local time, UTC, offset, abbreviation, DST flag, weekday and ISO week for a zone. — $0.001 per call. Params: zone?
- [Time zone facts](https://fourzerotwo.si/v1/time/zone-info) [free]: Offset, abbreviation and DST at a moment, plus the next clock change, for an IANA zone. — $0.001 per call. Params: zone, at?
- [Business days (any country)](https://fourzerotwo.si/v1/time/business-days) [free]: Count business days between two dates, or add business days to a date, skipping weekends and the country's public holidays. — $0.001 per call. Params: country, from, to?, days?
- [Paid test call](https://fourzerotwo.si/v1/time/signed): Server UTC time and a request id. The cheapest paid endpoint: use it to test an x402 payment end to end. — $0.001 per call. Params: none

### UK Bank Holidays (uk-bank-holidays)

Official bank holidays for England & Wales, Scotland and Northern Ireland. Docs: https://fourzerotwo.si/apis/uk-bank-holidays

- [All bank holidays](https://fourzerotwo.si/v1/uk-bank-holidays/all) [free]: Every published UK bank holiday by division. — $0.001 per call. Params: none
- [England & Wales](https://fourzerotwo.si/v1/uk-bank-holidays/england-and-wales) [free]: Bank holidays in England and Wales. — $0.001 per call. Params: none
- [Scotland](https://fourzerotwo.si/v1/uk-bank-holidays/scotland) [free]: Bank holidays in Scotland. — $0.001 per call. Params: none
- [Northern Ireland](https://fourzerotwo.si/v1/uk-bank-holidays/northern-ireland) [free]: Bank holidays in Northern Ireland. — $0.001 per call. Params: none

### UK Commons Votes (uk-parliament-votes)

House of Commons divisions: search votes and see how every MP voted. Docs: https://fourzerotwo.si/apis/uk-parliament-votes

- [Search divisions](https://fourzerotwo.si/v1/uk-parliament-votes/search) [free]: Find Commons votes by keyword. — $0.002 per call. Params: q
- [Division](https://fourzerotwo.si/v1/uk-parliament-votes/division) [free]: One Commons vote with the full Aye and No lists. — $0.003 per call. Params: id
- [How an MP voted](https://fourzerotwo.si/v1/uk-parliament-votes/member-votes) [free]: A member's votes across Commons divisions. — $0.003 per call. Params: member_id

### UK Companies House (companies-house)

Every UK company: search, profile, status, registered office, filings, charges and insolvency. Docs: https://fourzerotwo.si/apis/companies-house

- [Alphabetical name search](https://fourzerotwo.si/v1/companies-house/alphabetical-search) [sample]: Companies listed alphabetically around a name — good for name-availability checks. — $0.003 per call. Params: q
- [Dissolved company search](https://fourzerotwo.si/v1/companies-house/dissolved-search) [sample]: Search dissolved and removed companies by name. — $0.003 per call. Params: q
- [Company profile](https://fourzerotwo.si/v1/companies-house/profile) [sample]: Status, type, incorporation date, SIC codes, accounts and confirmation statement due dates, registered office. — $0.005 per call. Params: company_number
- [Registered office](https://fourzerotwo.si/v1/companies-house/registered-office) [sample]: Current registered office address. — $0.002 per call. Params: company_number
- [Filing history](https://fourzerotwo.si/v1/companies-house/filing-history) [sample]: Accounts, confirmation statements, appointments and other filings, newest first. — $0.005 per call. Params: company_number, category?
- [Filing item](https://fourzerotwo.si/v1/companies-house/filing) [sample]: One filing's detail and document link. — $0.003 per call. Params: company_number, transaction_id
- [Charges (secured debt)](https://fourzerotwo.si/v1/companies-house/charges) [sample]: Mortgages and charges registered against a company, with lenders and status. — $0.008 per call. Params: company_number
- [Insolvency](https://fourzerotwo.si/v1/companies-house/insolvency) [sample]: Insolvency cases, practitioners and key dates for a company. — $0.008 per call. Params: company_number
- [Exemptions](https://fourzerotwo.si/v1/companies-house/exemptions) [sample]: PSC disclosure exemptions a company holds. — $0.002 per call. Params: company_number
- [UK establishments](https://fourzerotwo.si/v1/companies-house/uk-establishments) [sample]: UK branches of an overseas company. — $0.002 per call. Params: company_number
- [Search companies](https://fourzerotwo.si/v1/companies-house/search) [sample]: Find UK companies by name or number, with status, address and incorporation date. — $0.003 per call. Params: q
- [Advanced company search](https://fourzerotwo.si/v1/companies-house/advanced-search) [sample]: Filter companies by name, status, SIC code, location and incorporation dates. — $0.005 per call. Params: company_name_includes?, company_status?, sic_codes?, location?, incorporated_from?, incorporated_to?

### UK Company Due Diligence (uk-business)

One call: a UK company's register status, overdue filings, late accounts, recent name and office changes, Gazette insolvency notices, LEI and a sanctions name screen, with risk flags. Docs: https://fourzerotwo.si/apis/uk-business

- [Company due-diligence check](https://fourzerotwo.si/v1/uk-business/due-diligence): Register profile plus risk flags: status, overdue accounts or confirmation statement, late accounts, insolvency history, Gazette notices, recent name/office changes, LEI and sanctions name screen. — $0.08 per call. Params: company_number

### UK Consumer Disputes (uk-disputes)

Parking appeals, energy back-billing, broadband/mobile and water disputes with cited law, deadlines and escalation routes, plus a verified complaints-contact directory. Docs: https://fourzerotwo.si/apis/uk-disputes

- [Complaints contact](https://fourzerotwo.si/v1/uk-disputes/complaints-contact) [sample]: Verified complaints address, email, phone and URL for a UK company (energy, telecoms, water, finance…). — $0.003 per call. Params: organisation
- [Directory coverage](https://fourzerotwo.si/v1/uk-disputes/organisations) [sample]: Organisations in the complaints directory, private parking operators and UK councils (with London flag). — $0.001 per call. Params: none
- [Energy bill dispute](https://fourzerotwo.si/v1/uk-disputes/energy-complaint) [sample]: Back-billing (12-month rule) check, Ombudsman timeline and cited rules for a UK energy complaint. — $0.01 per call. Params: supplier?, bill_date?, charges_from?, complained_on?
- [Broadband & mobile dispute](https://fourzerotwo.si/v1/uk-disputes/telecoms-complaint) [sample]: ADR timeline (6 or 8 weeks), price-rise rules and penalty-free exit window for a UK telecoms complaint. — $0.01 per call. Params: provider?, complained_on?, contract_start?, change_notified_on?
- [Water bill dispute](https://fourzerotwo.si/v1/uk-disputes/water-complaint) [sample]: Two-stage complaint, CCW referral and Guaranteed Standards Scheme timeline (England & Wales). — $0.01 per call. Params: company?, complained_on?
- [Parking ticket appeal assessment](https://fourzerotwo.si/v1/uk-disputes/parking-appeal) [sample]: Council PCN or private charge: route, deadlines, grounds, tribunal, cited law and strategy. — $0.01 per call. Params: type, issued_on, issuer?, ticket_kind?, ground?, amount?
- [Consumer charge dispute](https://fourzerotwo.si/v1/uk-disputes/consumer-charge) [sample]: Subscription, gym, retailer or tradesperson charge: rules that apply (Consumer Rights Act 2015), what to ask for, and the escalation ladder to a small claim. Regulated claims are signposted instead. — $0.01 per call. Params: category, company?, amount?, complained_on?

### UK Economic Indicators (uk-economy)

Latest ONS headline figures: inflation, jobs, wages, GDP, retail sales, public debt and trade. Docs: https://fourzerotwo.si/apis/uk-economy

- [CPI inflation (annual rate)](https://fourzerotwo.si/v1/uk-economy/cpi-annual-rate) [free]: UK CPI 12-month inflation rate, %, monthly. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [CPIH inflation (annual rate)](https://fourzerotwo.si/v1/uk-economy/cpih-annual-rate) [free]: UK CPIH (CPI including owner occupiers' housing costs) 12-month rate, %, monthly. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [RPI inflation (annual rate)](https://fourzerotwo.si/v1/uk-economy/rpi-annual-rate) [free]: UK RPI 12-month change, %, monthly. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [CPI index](https://fourzerotwo.si/v1/uk-economy/cpi-index) [free]: UK CPI all-items index (2015=100), monthly. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [CPIH index](https://fourzerotwo.si/v1/uk-economy/cpih-index) [free]: UK CPIH all-items index (2015=100), monthly. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Employment rate](https://fourzerotwo.si/v1/uk-economy/employment-rate) [free]: UK employment rate, aged 16-64, seasonally adjusted, %. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [People in employment](https://fourzerotwo.si/v1/uk-economy/employment-level) [free]: Number of people in employment, aged 16+, seasonally adjusted, thousands. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Economic inactivity rate](https://fourzerotwo.si/v1/uk-economy/inactivity-rate) [free]: UK economic inactivity rate, aged 16-64, seasonally adjusted, %. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Wage growth (total pay)](https://fourzerotwo.si/v1/uk-economy/earnings-growth-total) [free]: Average weekly earnings, total pay, year-on-year 3-month average growth, %. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Wage growth (regular pay)](https://fourzerotwo.si/v1/uk-economy/earnings-growth-regular) [free]: Average weekly earnings, regular pay, year-on-year 3-month average growth, %. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [GDP growth (quarterly)](https://fourzerotwo.si/v1/uk-economy/gdp-quarterly-growth) [free]: UK GDP quarter-on-quarter growth, chained volume, seasonally adjusted, %. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [GDP (level)](https://fourzerotwo.si/v1/uk-economy/gdp-level) [free]: UK GDP, chained volume measures, seasonally adjusted, £m, quarterly. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Monthly GDP index](https://fourzerotwo.si/v1/uk-economy/monthly-gdp-index) [free]: UK monthly gross value added index, chained volume, seasonally adjusted. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Retail sales volume](https://fourzerotwo.si/v1/uk-economy/retail-sales-volume) [free]: UK retail sales volume index, all retailers incl. fuel, seasonally adjusted. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Public sector net debt](https://fourzerotwo.si/v1/uk-economy/public-sector-net-debt) [free]: UK public sector net debt (ex. public sector banks) as % of GDP. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Trade balance](https://fourzerotwo.si/v1/uk-economy/trade-balance) [free]: UK total trade balance, current prices, seasonally adjusted, £m. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Unemployment rate](https://fourzerotwo.si/v1/uk-economy/unemployment-rate) [free]: UK unemployment rate, aged 16+, seasonally adjusted, %, rolling 3-month. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Public sector net borrowing](https://fourzerotwo.si/v1/uk-economy/public-sector-net-borrowing) [free]: UK public sector net borrowing excluding public sector banks, £m, monthly. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [CPI inflation (monthly rate)](https://fourzerotwo.si/v1/uk-economy/cpi-monthly-rate) [free]: UK CPI month-on-month change, all items, %. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [RPI index](https://fourzerotwo.si/v1/uk-economy/rpi-index) [free]: UK RPI all-items index (Jan 1987=100), monthly. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Average weekly earnings (total pay)](https://fourzerotwo.si/v1/uk-economy/average-weekly-earnings) [free]: Average weekly earnings, whole economy, total pay excluding arrears, seasonally adjusted, £. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Average weekly earnings (regular pay)](https://fourzerotwo.si/v1/uk-economy/average-weekly-earnings-regular) [free]: Average weekly earnings, whole economy, regular pay excluding arrears, seasonally adjusted, £. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Job vacancies](https://fourzerotwo.si/v1/uk-economy/vacancies) [free]: UK job vacancies, total, thousands, rolling 3-month. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [People unemployed](https://fourzerotwo.si/v1/uk-economy/unemployment-level) [free]: Number of unemployed people, aged 16+, seasonally adjusted, thousands. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Redundancies](https://fourzerotwo.si/v1/uk-economy/redundancies) [free]: ILO redundancy level, UK, seasonally adjusted, thousands. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [GDP (current prices)](https://fourzerotwo.si/v1/uk-economy/gdp-nominal) [free]: UK GDP at market prices, current prices, seasonally adjusted, £m, quarterly. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [GDP growth (annual)](https://fourzerotwo.si/v1/uk-economy/gdp-annual-growth) [free]: UK GDP year-on-year growth, chained volume, %, annual. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Current account balance](https://fourzerotwo.si/v1/uk-economy/current-account-balance) [free]: UK balance of payments current account balance, seasonally adjusted, £m, quarterly. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none
- [Retail sales value](https://fourzerotwo.si/v1/uk-economy/retail-sales-value) [free]: UK retail sales value index, all retailers incl. fuel, seasonally adjusted. Returns the title, unit, release date and the recent values (default last 24). — $0.002 per call. Params: none

### UK Flood & River Levels (uk-flood)

Live flood warnings, flood areas, river, sea and rainfall gauges across England from the Environment Agency. Docs: https://fourzerotwo.si/apis/uk-flood

- [Flood warnings in force](https://fourzerotwo.si/v1/uk-flood/warnings) [free]: Every flood alert and warning currently in force in England. — $0.002 per call. Params: none
- [Flood warnings near a point](https://fourzerotwo.si/v1/uk-flood/warnings-near) [free]: Flood alerts and warnings in force within a radius of a point. — $0.002 per call. Params: lat, long, dist?
- [Severe flood warnings](https://fourzerotwo.si/v1/uk-flood/severe-warnings) [free]: Only severe flood warnings (danger to life) and flood warnings currently in force. — $0.002 per call. Params: none
- [Flood area](https://fourzerotwo.si/v1/uk-flood/flood-area) [free]: Description, river or sea and polygon reference for one flood area. — $0.001 per call. Params: area
- [Gauge details](https://fourzerotwo.si/v1/uk-flood/station) [free]: Location, river, typical range and measures for one monitoring station. — $0.001 per call. Params: station
- [Latest gauge reading](https://fourzerotwo.si/v1/uk-flood/station-latest) [free]: Latest readings from every measure at a station. — $0.002 per call. Params: station
- [Gauge readings history](https://fourzerotwo.si/v1/uk-flood/station-history) [free]: Readings from a station since a date-time (max 4 weeks back). — $0.003 per call. Params: station, since?, _limit?
- [Rain gauges near a point](https://fourzerotwo.si/v1/uk-flood/rainfall-near) [free]: Rainfall stations near a point. — $0.002 per call. Params: lat, long, dist?
- [Tide gauges](https://fourzerotwo.si/v1/uk-flood/tide-gauges) [free]: Every tidal level monitoring station in England. — $0.001 per call. Params: none
- [River stations by river](https://fourzerotwo.si/v1/uk-flood/river-stations) [free]: Monitoring stations on a named river. — $0.002 per call. Params: riverName
- [Flood areas near a point](https://fourzerotwo.si/v1/uk-flood/flood-areas-near) [free]: Flood alert and warning areas within a radius of a point. — $0.002 per call. Params: lat, long, dist?
- [Gauges near a point](https://fourzerotwo.si/v1/uk-flood/stations-near) [free]: River level, flow, tidal and rainfall monitoring stations near a point. — $0.002 per call. Params: lat, long, dist?

### UK Food Hygiene Ratings (uk-food-hygiene)

Food hygiene ratings for restaurants, takeaways, shops and caterers across the UK. Docs: https://fourzerotwo.si/apis/uk-food-hygiene

- [Search businesses](https://fourzerotwo.si/v1/uk-food-hygiene/search) [free]: Find rated food businesses by name and/or address or postcode. — $0.002 per call. Params: name?, address?
- [Businesses near a point](https://fourzerotwo.si/v1/uk-food-hygiene/near) [free]: Rated food businesses within a distance of a point. — $0.002 per call. Params: latitude, longitude, maxDistanceLimit?
- [Business rating](https://fourzerotwo.si/v1/uk-food-hygiene/business) [free]: Rating, scores, inspection date and authority for one business. — $0.002 per call. Params: id
- [Local authorities](https://fourzerotwo.si/v1/uk-food-hygiene/authorities) [free]: Every local authority that runs a food hygiene scheme. — $0.001 per call. Params: none
- [Business types](https://fourzerotwo.si/v1/uk-food-hygiene/business-types) [free]: Business type codes used in ratings. — $0.001 per call. Params: none
- [Rating values](https://fourzerotwo.si/v1/uk-food-hygiene/ratings) [free]: Valid rating values and their meaning. — $0.001 per call. Params: none
- [Regions](https://fourzerotwo.si/v1/uk-food-hygiene/regions) [free]: Regions used by the ratings scheme. — $0.001 per call. Params: none
- [Score descriptors](https://fourzerotwo.si/v1/uk-food-hygiene/score-descriptors) [free]: What each hygiene, structural and management score means for a business. — $0.001 per call. Params: establishmentId

### UK Gazette Estates (uk-gazette)

Search UK deceased-estates (probate) notices from The Gazette and pull structured notice detail. Docs: https://fourzerotwo.si/apis/uk-gazette

- [Notice detail](https://fourzerotwo.si/v1/uk-gazette/notice) [sample]: Structured detail for one deceased-estates notice: address, date of death, executor and claim deadline. — $0.02 per call. Params: notice_id
- [Search deceased estates](https://fourzerotwo.si/v1/uk-gazette/deceased-estates) [sample]: Search UK deceased-estates notices by the deceased's name, optionally narrowed to a year of death. — $0.01 per call. Params: name, death_year?, limit?

### UK Geography Codes (uk-geography)

How UK areas nest: LSOA, MSOA and parish to ward, local authority, county, region and country, wards to Westminster constituencies, and name search for ONS codes. Docs: https://fourzerotwo.si/apis/uk-geography

- [Ward](https://fourzerotwo.si/v1/uk-geography/ward) [free]: A ward's local authority, county/unitary, region, country and Westminster constituency. — $0.001 per call. Params: code
- [Local authority](https://fourzerotwo.si/v1/uk-geography/local-authority) [free]: A local authority district's county/unitary, region and country, with all its wards and constituencies. — $0.001 per call. Params: code
- [Westminster constituency](https://fourzerotwo.si/v1/uk-geography/constituency) [free]: The wards (split wards flagged) and local authorities making up a 2024 Westminster constituency. — $0.001 per call. Params: code
- [LSOA](https://fourzerotwo.si/v1/uk-geography/lsoa) [free]: The ward and local authority for a 2021 Lower Layer Super Output Area. — $0.001 per call. Params: code
- [MSOA](https://fourzerotwo.si/v1/uk-geography/msoa) [free]: The wards and local authority for a 2021 Middle Layer Super Output Area. — $0.001 per call. Params: code
- [Parish](https://fourzerotwo.si/v1/uk-geography/parish) [free]: The ward(s) and local authority for a civil parish. — $0.001 per call. Params: code
- [Region](https://fourzerotwo.si/v1/uk-geography/region) [free]: The local authority districts in an English region. — $0.001 per call. Params: code
- [County or unitary authority](https://fourzerotwo.si/v1/uk-geography/county) [free]: The local authority districts in a county or unitary authority. — $0.001 per call. Params: code
- [Find a code by name](https://fourzerotwo.si/v1/uk-geography/search) [free]: Search ward, local-authority, county, region, constituency or parish names for their ONS codes. — $0.001 per call. Params: name, type?

### UK Legislation (uk-legislation)

Search UK Acts and statutory instruments, read the current (or point-in-time) text of any section, and track amendments. Docs: https://fourzerotwo.si/apis/uk-legislation

- [Act or instrument overview](https://fourzerotwo.si/v1/uk-legislation/item) [free]: Title, long title, enactment/made date, status, extent, count of outstanding changes and the full table of contents. — $0.003 per call. Params: type, year, number
- [Amendments made to it](https://fourzerotwo.si/v1/uk-legislation/changes) [free]: Most recent 50 changes (substitutions, repeals, insertions…) made by later legislation, with the amending provision, in-force dates and whether the change is reflected in the text yet. — $0.003 per call. Params: type, year, number
- [Newly published legislation](https://fourzerotwo.si/v1/uk-legislation/latest) [free]: The newest Acts and instruments published, optionally of one type. — $0.001 per call. Params: type?
- [Legislation type codes](https://fourzerotwo.si/v1/uk-legislation/types) [free]: Type codes and what they mean. — $0.0005 per call. Params: none
- [Search legislation](https://fourzerotwo.si/v1/uk-legislation/search) [free]: Find Acts and instruments by title words or full text, optionally by type and year. — $0.002 per call. Params: title?, text?, type?, year?, page?
- [Provision text](https://fourzerotwo.si/v1/uk-legislation/provision) [free]: Plain numbered text of one section, regulation, article or schedule paragraph, as it stands today or on a past date, with amendment and commencement notes. — $0.003 per call. Params: type, year, number, provision, date?

### UK Parliament Bills (uk-parliament-bills)

Bills before the UK Parliament: search, status, stages, sponsors and publications. Docs: https://fourzerotwo.si/apis/uk-parliament-bills

- [Bill types](https://fourzerotwo.si/v1/uk-parliament-bills/bill-types) [free]: Categories of bill. — $0.001 per call. Params: none
- [Search bills](https://fourzerotwo.si/v1/uk-parliament-bills/search) [free]: Find bills by keyword. — $0.002 per call. Params: q
- [Bill](https://fourzerotwo.si/v1/uk-parliament-bills/bill) [free]: Title, current stage, house, sponsors and royal assent status of a bill. — $0.002 per call. Params: id
- [Bill stages](https://fourzerotwo.si/v1/uk-parliament-bills/stages) [free]: Every stage a bill has passed through, with dates. — $0.002 per call. Params: id
- [Bill publications](https://fourzerotwo.si/v1/uk-parliament-bills/publications) [free]: Bill texts, explanatory notes and impact assessments. — $0.002 per call. Params: id
- [Bill news](https://fourzerotwo.si/v1/uk-parliament-bills/news) [free]: News articles about a bill. — $0.002 per call. Params: id

### UK Parliament Members (uk-parliament-members)

MPs and peers: search, biographies, contact details, voting records, constituencies and government posts. Docs: https://fourzerotwo.si/apis/uk-parliament-members

- [Member](https://fourzerotwo.si/v1/uk-parliament-members/member) [free]: Name, party, house, membership status and constituency for one member. — $0.002 per call. Params: id
- [Biography](https://fourzerotwo.si/v1/uk-parliament-members/biography) [free]: Government, opposition and committee posts, and party history for a member. — $0.002 per call. Params: id
- [Contact details](https://fourzerotwo.si/v1/uk-parliament-members/contact) [free]: Parliamentary and constituency contact details for a member. — $0.002 per call. Params: id
- [Voting record](https://fourzerotwo.si/v1/uk-parliament-members/voting) [free]: A member's recent votes in divisions. — $0.003 per call. Params: id, house
- [Synopsis](https://fourzerotwo.si/v1/uk-parliament-members/synopsis) [free]: One-paragraph summary of a member's career. — $0.001 per call. Params: id
- [Registered interests](https://fourzerotwo.si/v1/uk-parliament-members/registered-interests) [free]: A member's entries in the Register of Members' Financial Interests. — $0.003 per call. Params: id
- [Search constituencies](https://fourzerotwo.si/v1/uk-parliament-members/constituency-search) [free]: Find Westminster constituencies by name. — $0.002 per call. Params: searchText
- [Constituency](https://fourzerotwo.si/v1/uk-parliament-members/constituency) [free]: A constituency and its current representation. — $0.002 per call. Params: id
- [Election results](https://fourzerotwo.si/v1/uk-parliament-members/constituency-results) [free]: General election results for a constituency. — $0.003 per call. Params: id
- [Government posts](https://fourzerotwo.si/v1/uk-parliament-members/government-posts) [free]: Current ministers and the government posts they hold. — $0.002 per call. Params: none
- [Opposition posts](https://fourzerotwo.si/v1/uk-parliament-members/opposition-posts) [free]: Current shadow ministers and opposition posts. — $0.002 per call. Params: none
- [Search members](https://fourzerotwo.si/v1/uk-parliament-members/search) [free]: Find MPs and peers by name, party, house or constituency. — $0.002 per call. Params: name?, house?
- [State of the parties](https://fourzerotwo.si/v1/uk-parliament-members/state-of-parties) [free]: Seats held by each party in a house on a date. — $0.002 per call. Params: house, date

### UK Planning Constraints (uk-planning)

Is a site in a conservation area, listed, green belt, flood zone, SSSI or under an Article 4 direction? Point-in-polygon checks against 30 planning, heritage and environmental datasets for England, by postcode or lat/lng. Docs: https://fourzerotwo.si/apis/uk-planning

- [Conservation area](https://fourzerotwo.si/v1/uk-planning/conservation-area) [free]: Whether a point is inside a conservation area (extra planning controls on demolition, trees and alterations). By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Listed building](https://fourzerotwo.si/v1/uk-planning/listed-building) [free]: Listed building outlines covering a point, with the listing grade (I, II*, II) and the Historic England list entry. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Article 4 direction](https://fourzerotwo.si/v1/uk-planning/article-4) [free]: Article 4 directions covering a point (permitted development rights removed, so more work needs planning permission). By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Tree preservation order zone](https://fourzerotwo.si/v1/uk-planning/tree-preservation) [free]: Tree preservation order areas covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Flood risk zone (planning)](https://fourzerotwo.si/v1/uk-planning/flood-zone) [free]: Planning flood zones (2/3) at a point, as published for planning decisions. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Green belt](https://fourzerotwo.si/v1/uk-planning/green-belt) [free]: Whether a point is in the green belt. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Scheduled monument](https://fourzerotwo.si/v1/uk-planning/scheduled-monument) [free]: Scheduled monuments covering a point (consent needed for works). By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [World Heritage Site](https://fourzerotwo.si/v1/uk-planning/world-heritage-site) [free]: UNESCO World Heritage Sites in England covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [World Heritage Site buffer zone](https://fourzerotwo.si/v1/uk-planning/world-heritage-buffer) [free]: World Heritage Site buffer zones covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Registered park or garden](https://fourzerotwo.si/v1/uk-planning/park-and-garden) [free]: Registered historic parks and gardens covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Ancient woodland](https://fourzerotwo.si/v1/uk-planning/ancient-woodland) [free]: Ancient woodland covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [National Landscape (AONB)](https://fourzerotwo.si/v1/uk-planning/national-landscape) [free]: National Landscapes (formerly Areas of Outstanding Natural Beauty) covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [National park](https://fourzerotwo.si/v1/uk-planning/national-park) [free]: National parks covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Site of Special Scientific Interest](https://fourzerotwo.si/v1/uk-planning/sssi) [free]: SSSIs covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Special Area of Conservation](https://fourzerotwo.si/v1/uk-planning/special-area-of-conservation) [free]: Special Areas of Conservation covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Special Protection Area](https://fourzerotwo.si/v1/uk-planning/special-protection-area) [free]: Special Protection Areas (birds) covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Ramsar wetland](https://fourzerotwo.si/v1/uk-planning/ramsar) [free]: Ramsar wetland sites covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [National nature reserve](https://fourzerotwo.si/v1/uk-planning/national-nature-reserve) [free]: National nature reserves covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Local nature reserve](https://fourzerotwo.si/v1/uk-planning/local-nature-reserve) [free]: Local nature reserves covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Registered battlefield](https://fourzerotwo.si/v1/uk-planning/battlefield) [free]: Registered historic battlefields covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Heritage at risk](https://fourzerotwo.si/v1/uk-planning/heritage-at-risk) [free]: Historic England Heritage at Risk entries covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Heritage coast](https://fourzerotwo.si/v1/uk-planning/heritage-coast) [free]: Heritage coasts covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Air quality management area](https://fourzerotwo.si/v1/uk-planning/air-quality-area) [free]: Air quality management areas covering a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Agricultural land classification](https://fourzerotwo.si/v1/uk-planning/agricultural-land) [free]: Agricultural land classification grade at a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Local authority district](https://fourzerotwo.si/v1/uk-planning/local-authority) [free]: The local authority district for a point, with its ONS code. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Local planning authority](https://fourzerotwo.si/v1/uk-planning/planning-authority) [free]: The local planning authority that decides applications at a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Electoral ward](https://fourzerotwo.si/v1/uk-planning/ward) [free]: The electoral ward for a point, with its ONS code. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Parish](https://fourzerotwo.si/v1/uk-planning/parish) [free]: The civil parish for a point (if parished). By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Built-up area](https://fourzerotwo.si/v1/uk-planning/built-up-area) [free]: The ONS built-up area (town or city) containing a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [Region](https://fourzerotwo.si/v1/uk-planning/region) [free]: The English region for a point. By UK postcode or lat/lng. — $0.002 per call. Params: postcode?, lat?, lng?, include_ended?, geometry?
- [All planning constraints at a point](https://fourzerotwo.si/v1/uk-planning/designations) [sample]: Every published planning and environmental designation at a point in one call: conservation area, listed building (with grade), Article 4, TPO, flood zone, green belt, scheduled monument, World Heritage, parks and gardens, ancient woodland, National Landscape, national park, SSSI, SAC, SPA, Ramsar, nature reserves, battlefields, heritage at risk, heritage coast, AQMA. — $0.005 per call. Params: postcode?, lat?, lng?, include_ended?
- [Administrative areas for a point](https://fourzerotwo.si/v1/uk-planning/admin-areas) [free]: Region, local authority district, local planning authority, ward, parish and built-up area for a postcode or point, with ONS codes. — $0.002 per call. Params: postcode?, lat?, lng?
- [Planning datasets](https://fourzerotwo.si/v1/uk-planning/datasets) [free]: Every planning.data.gov.uk dataset with data: name, typology, entity count and licence; optional text filter. — $0.0005 per call. Params: q?
- [Planning entity by id](https://fourzerotwo.si/v1/uk-planning/entity) [free]: One planning.data.gov.uk entity (any dataset) by its entity number, optionally with boundary WKT. — $0.001 per call. Params: id, geometry?

### UK Police Data (uk-police)

Street-level crime, outcomes, stop and search, forces and neighbourhood policing for England, Wales and Northern Ireland. Docs: https://fourzerotwo.si/apis/uk-police

- [Street crime near a point](https://fourzerotwo.si/v1/uk-police/street-crime) [free]: All street-level crimes within a mile of a point for a month. — $0.003 per call. Params: lat, lng, date?
- [Crimes at a location](https://fourzerotwo.si/v1/uk-police/crimes-at-location) [free]: Crimes snapped to the nearest anonymised location to a point. — $0.003 per call. Params: lat, lng, date?
- [Crimes with no location](https://fourzerotwo.si/v1/uk-police/crimes-no-location) [free]: Crimes a force could not map to a location, by category. — $0.002 per call. Params: category, force, date?
- [Crime categories](https://fourzerotwo.si/v1/uk-police/categories) [free]: Valid crime categories for a month. — $0.001 per call. Params: date?
- [Last updated](https://fourzerotwo.si/v1/uk-police/last-updated) [free]: The latest month with crime data available. — $0.001 per call. Params: none
- [Outcomes near a point](https://fourzerotwo.si/v1/uk-police/outcomes-at-location) [free]: Case outcomes for crimes near a point. — $0.003 per call. Params: lat, lng, date?
- [Outcomes for a crime](https://fourzerotwo.si/v1/uk-police/crime-outcomes) [free]: Full outcome history for one crime by its persistent id. — $0.002 per call. Params: persistent_id
- [Stop and search by force](https://fourzerotwo.si/v1/uk-police/stop-search-force) [free]: Stop and search records for a force and month. — $0.003 per call. Params: force, date?
- [Police forces](https://fourzerotwo.si/v1/uk-police/forces) [free]: Every police force with its id. — $0.001 per call. Params: none
- [Force details](https://fourzerotwo.si/v1/uk-police/force) [free]: Contact details, website and engagement methods for a force. — $0.001 per call. Params: force
- [Senior officers](https://fourzerotwo.si/v1/uk-police/force-officers) [free]: Senior officers of a force with biographies. — $0.001 per call. Params: force
- [Neighbourhoods](https://fourzerotwo.si/v1/uk-police/neighbourhoods) [free]: Neighbourhood policing areas in a force. — $0.001 per call. Params: force
- [Neighbourhood team](https://fourzerotwo.si/v1/uk-police/neighbourhood-team) [free]: Officers in a neighbourhood policing team. — $0.001 per call. Params: force, neighbourhood
- [Neighbourhood events](https://fourzerotwo.si/v1/uk-police/neighbourhood-events) [free]: Upcoming community events run by a neighbourhood team. — $0.001 per call. Params: force, neighbourhood
- [Neighbourhood priorities](https://fourzerotwo.si/v1/uk-police/neighbourhood-priorities) [free]: Issues a neighbourhood team has committed to tackle, and what it did. — $0.001 per call. Params: force, neighbourhood
- [Neighbourhood boundary](https://fourzerotwo.si/v1/uk-police/neighbourhood-boundary) [free]: Boundary polygon of a neighbourhood as lat/lng points. — $0.002 per call. Params: force, neighbourhood
- [Locate neighbourhood](https://fourzerotwo.si/v1/uk-police/locate-neighbourhood) [free]: Which force and neighbourhood covers a lat,lng point. — $0.002 per call. Params: q
- [Stop and search near a point](https://fourzerotwo.si/v1/uk-police/stop-search-near) [free]: Stop and search records within a mile of a point. — $0.003 per call. Params: lat, lng, date?
- [Neighbourhood details](https://fourzerotwo.si/v1/uk-police/neighbourhood) [free]: Contact details, description and centre of a neighbourhood. — $0.001 per call. Params: force, neighbourhood

### UK Postcodes (uk-postcodes)

Geocode and describe any UK postcode: coordinates, district, ward, constituency, region. Docs: https://fourzerotwo.si/apis/uk-postcodes

- [Postcode lookup](https://fourzerotwo.si/v1/uk-postcodes/lookup) [free]: Full ONS record for one UK postcode, including latitude/longitude and administrative areas. — $0.002 per call. Params: postcode
- [Nearest postcodes](https://fourzerotwo.si/v1/uk-postcodes/nearest) [free]: Postcodes nearest to a given UK postcode. — $0.002 per call. Params: postcode, limit?
- [Reverse geocode](https://fourzerotwo.si/v1/uk-postcodes/reverse) [free]: Nearest postcodes to a latitude/longitude. — $0.002 per call. Params: lat, lon, limit?
- [Validate postcode](https://fourzerotwo.si/v1/uk-postcodes/validate) [free]: Whether a string is a valid, live UK postcode. — $0.001 per call. Params: postcode
- [Postcode autocomplete](https://fourzerotwo.si/v1/uk-postcodes/autocomplete) [free]: Complete a partial UK postcode. — $0.001 per call. Params: postcode
- [Outward code](https://fourzerotwo.si/v1/uk-postcodes/outcode) [free]: Centroid and administrative areas for a postcode district (outward code), e.g. "SW1A". — $0.002 per call. Params: outcode
- [Terminated postcode](https://fourzerotwo.si/v1/uk-postcodes/terminated) [free]: When a retired UK postcode was terminated, and where it was. — $0.002 per call. Params: postcode
- [Place search](https://fourzerotwo.si/v1/uk-postcodes/places) [free]: Search UK places (towns, villages, suburbs) by name. — $0.002 per call. Params: q, limit?

### UK Property & Area (uk-property)

Sold prices, price summaries, house-price-index revaluations, planning designations, council lookup and a one-call area report for any UK postcode. Docs: https://fourzerotwo.si/apis/uk-property

- [Sold prices](https://fourzerotwo.si/v1/uk-property/sold-prices) [sample]: Every recorded sale in a postcode since 1995 (England & Wales), newest first; optionally one address. — $0.005 per call. Params: postcode, address?
- [Price summary](https://fourzerotwo.si/v1/uk-property/price-summary) [sample]: Count, median, mean, range and by-type medians of sales in a postcode over N years. — $0.005 per call. Params: postcode, years?
- [Revalue a past sale](https://fourzerotwo.si/v1/uk-property/revalue) [sample]: Index a past sale price to today with the UK House Price Index for a region. — $0.005 per call. Params: amount, sale_date, region?
- [House price index](https://fourzerotwo.si/v1/uk-property/house-price-index) [sample]: UK HPI monthly index for a region. — $0.003 per call. Params: region?, months?
- [Planning constraints](https://fourzerotwo.si/v1/uk-property/planning-constraints) [sample]: Listed building, conservation area, Article 4, TPO, green belt, AONB, national park and more at a location (England). — $0.005 per call. Params: postcode?, latitude?, longitude?
- [Council & administration](https://fourzerotwo.si/v1/uk-property/council) [sample]: Council (with website and tier), ward, parish, constituency, police force and NHS ICB for a postcode. — $0.002 per call. Params: postcode
- [Area report](https://fourzerotwo.si/v1/uk-property/area-report) [sample]: One call: administration, sold-price summary, planning designations, last month's crime within a mile and flood warnings within 5km. — $0.03 per call. Params: postcode
- [Lease length assessment](https://fourzerotwo.si/v1/uk-property/lease-length) [sample]: Years remaining on a lease and a red/amber/green mortgageability and extension-cost assessment. — $0.003 per call. Params: lease_start, term_years
- [Estate deadlines](https://fourzerotwo.si/v1/uk-property/estate-deadlines) [sample]: Key probate dates: 1975 Act claim window, Gazette creditor deadline, executor's year and IHT due date (England & Wales). — $0.003 per call. Params: date_of_death?, grant_date?, notice_claim_date?, gross_estate?
- [Estate checklist](https://fourzerotwo.si/v1/uk-property/estate-checklist) [sample]: What happens next for an estate, from the grant's facts: who is responsible, intestacy, the 1975 Act claim window, creditor deadline, IHT and the executor's year (England & Wales). — $0.005 per call. Params: representatives?, professional?, has_will?, grant_date?, notice_claim_date?, gross_estate?, date_of_death?, has_trust?

### UK Public Tenders (uk-tenders)

UK public-sector tenders and contract awards from Contracts Finder and Find a Tender: search, read a notice, see who won what. Docs: https://fourzerotwo.si/apis/uk-tenders

- [Search tenders](https://fourzerotwo.si/v1/uk-tenders/search) [free]: Contracts Finder notices by keyword, status (open, closed, awarded, withdrawn), type and publication date, optionally above a minimum value. — $0.003 per call. Params: q?, status?, type?, published_from?, published_to?, min_value?, limit?
- [Notice](https://fourzerotwo.si/v1/uk-tenders/notice) [free]: One notice in full: description, CPV codes, contract dates, procedure and awards (supplier, value, dates). Accepts a Contracts Finder id (GUID) or a Find a Tender notice number (e.g. 095302-2026). — $0.002 per call. Params: id
- [Awards to a supplier](https://fourzerotwo.si/v1/uk-tenders/supplier-awards) [free]: Contracts Finder awards won by a supplier (name match), newest first, with total value. — $0.003 per call. Params: supplier, published_from?
- [Latest Find a Tender notices](https://fourzerotwo.si/v1/uk-tenders/find-a-tender-latest) [free]: Above-threshold UK notices published or updated on Find a Tender in the last 1–7 days, by stage (planning, tender, award), optionally filtered by keyword. — $0.003 per call. Params: days?, stage?, q?, limit?

### UK River Levels, Flow & Rainfall (uk-rivers)

Environment Agency hydrology gauges across England: river levels and flows (m³/s), rainfall totals and groundwater levels, with 15-minute readings. Find gauges near a postcode, then read the latest or recent series. Docs: https://fourzerotwo.si/apis/uk-rivers

- [Gauges near a point](https://fourzerotwo.si/v1/uk-rivers/stations-near) [free]: River level, flow, rainfall and groundwater stations within a radius (default 10 km, max 25) of a postcode or point, nearest first. — $0.002 per call. Params: postcode?, lat?, lng?, type?, radius_km?, limit?
- [Find gauges by name](https://fourzerotwo.si/v1/uk-rivers/search) [free]: Search hydrology stations by station or river name. — $0.001 per call. Params: name
- [Gauge details](https://fourzerotwo.si/v1/uk-rivers/station) [free]: One station: river, location, catchment area, date opened and its measures. — $0.001 per call. Params: id
- [Latest reading](https://fourzerotwo.si/v1/uk-rivers/latest) [free]: The latest reading for each measure of a type (level, flow, rainfall or groundwater) at a station. — $0.002 per call. Params: id, type
- [Recent readings](https://fourzerotwo.si/v1/uk-rivers/readings) [free]: Recent 15-minute readings (or daily means) for one type at a station, up to 7 days, newest first. — $0.002 per call. Params: id, type, days?
- [Rainfall near a point](https://fourzerotwo.si/v1/uk-rivers/rainfall-near) [free]: The nearest rain gauges to a postcode or point with their latest rainfall totals. — $0.003 per call. Params: postcode?, lat?, lng?, radius_km?

### UK Road Collisions (uk-road-safety)

Police-reported road collisions in Great Britain over the last five years: how many near a postcode or point, by severity and year, plus breakdowns by road, speed limit, light and weather for any local authority. Docs: https://fourzerotwo.si/apis/uk-road-safety

- [Collisions near a point](https://fourzerotwo.si/v1/uk-road-safety/near) [sample]: Reported collisions within a radius (default 500 m, max 2 km) of a UK postcode or point over the last five years: totals by severity and year, and the most recent collisions with road, speed limit, light and weather. — $0.003 per call. Params: postcode?, lat?, lng?, radius_m?, year?, limit?
- [Collisions in a local authority](https://fourzerotwo.si/v1/uk-road-safety/local-authority) [sample]: Five-year (or one-year) collision totals for a local authority district by severity and year, road class, speed limit, light, weather, surface and urban/rural. — $0.003 per call. Params: code, year?
- [Collisions in a small area](https://fourzerotwo.si/v1/uk-road-safety/lsoa) [sample]: Collisions in a 2021 LSOA (neighbourhood of ~1,500 people) over five years, with the 50 most recent. — $0.002 per call. Params: code
- [Collision by id](https://fourzerotwo.si/v1/uk-road-safety/collision) [sample]: One reported collision by its STATS19 index: date, time, severity, vehicles, casualties, road and conditions. — $0.001 per call. Params: id

### UK Trade Statistics (uk-trade-stats)

HMRC Overseas Trade Statistics: what the UK imports and exports of any product, from and to which countries, by month or year. Docs: https://fourzerotwo.si/apis/uk-trade-stats

- [Trade in a product](https://fourzerotwo.si/v1/uk-trade-stats/commodity) [sample]: UK imports and exports of one product (HS2, HS4, HS6 or CN8 code) for a month or year: totals and top partner countries with share. — $0.003 per call. Params: code, period?, top?
- [Trade with a country](https://fourzerotwo.si/v1/uk-trade-stats/country) [sample]: UK imports from and exports to one country for a month or year: totals and top HS2 product chapters. — $0.003 per call. Params: country, period?, top?
- [Latest month](https://fourzerotwo.si/v1/uk-trade-stats/latest) [sample]: The most recent month HMRC has published trade statistics for. — $0.0005 per call. Params: none

### UK Trade Tariff (uk-trade-tariff)

UK commodity codes, import duties and controls by country of origin, quotas, geographical areas and HMRC monthly customs exchange rates. Docs: https://fourzerotwo.si/apis/uk-trade-tariff

- [Find a commodity code](https://fourzerotwo.si/v1/uk-trade-tariff/search) [free]: Candidate commodity codes, headings and chapters for a product description ("roasted coffee", "lithium battery"), best match first. — $0.003 per call. Params: q, limit?
- [Commodity duties & measures](https://fourzerotwo.si/v1/uk-trade-tariff/commodity) [free]: One commodity code: description, section/chapter/heading, third-country duty and every import/export measure (preferential rates, VAT, additional duties, controls with document codes). Give country to keep only what applies to that origin. — $0.002 per call. Params: code, country?
- [Heading](https://fourzerotwo.si/v1/uk-trade-tariff/heading) [free]: A 4-digit heading and every commodity code under it, with indents and whether each is declarable. — $0.002 per call. Params: code
- [Tariff-rate quotas](https://fourzerotwo.si/v1/uk-trade-tariff/quotas) [free]: Quota definitions with status (open, exhausted, critical), initial volume, remaining balance and validity, by order number or country of origin. — $0.002 per call. Params: order_number?, country?, status?, page?
- [Countries & groups](https://fourzerotwo.si/v1/uk-trade-tariff/areas) [free]: Tariff geographical areas: countries and the groups used in measures (e.g. 1011 ERGA OMNES, 1013 European Union, trade agreements), with group members. — $0.002 per call. Params: kind?, q?
- [HMRC customs exchange rates](https://fourzerotwo.si/v1/uk-trade-tariff/exchange-rates) [free]: HMRC's monthly exchange rates used to convert invoice values for customs and import VAT, units per £1. — $0.002 per call. Params: year, month, currency?

### UK Vehicle Tools (uk-vehicle-tools)

Date a UK number plate, work out MOT due dates, vehicle tax (VED) at April 2026 rates and London ULEZ compliance. Docs: https://fourzerotwo.si/apis/uk-vehicle-tools

- [Date a number plate](https://fourzerotwo.si/v1/uk-vehicle-tools/plate-age) [sample]: When a current-style UK plate (e.g. AB74 CDE) was issued, and the earliest first-MOT date it implies. — $0.001 per call. Params: reg
- [First MOT due](https://fourzerotwo.si/v1/uk-vehicle-tools/mot-due) [sample]: First MOT due date from a first-registration date, and whether an MOT is needed now. — $0.001 per call. Params: first_registered
- [Vehicle tax (VED)](https://fourzerotwo.si/v1/uk-vehicle-tools/vehicle-tax) [sample]: UK car tax under the right regime (pre-2001, 2001-2017 CO2 bands, 2017+), at April 2026 rates, incl. expensive-car supplement. — $0.002 per call. Params: first_registered, co2?, fuel?, engine_cc?, list_price?, diesel_rde2?
- [London ULEZ check](https://fourzerotwo.si/v1/uk-vehicle-tools/ulez) [sample]: Whether a car meets London ULEZ standards, from its Euro status or (as an estimate) its registration date. — $0.002 per call. Params: fuel, euro_status?, first_registered?

### US Federal Register (federal-register)

US federal rules, proposed rules, notices and presidential documents: search and detail. Docs: https://fourzerotwo.si/apis/federal-register

- [Search documents](https://fourzerotwo.si/v1/federal-register/search) [free]: Rules, proposed rules, notices and presidential documents matching a term. — $0.003 per call. Params: q
- [Document](https://fourzerotwo.si/v1/federal-register/document) [free]: One Federal Register document by document number. — $0.002 per call. Params: number
- [Public inspection today](https://fourzerotwo.si/v1/federal-register/public-inspection) [free]: Documents on public inspection ahead of publication. — $0.002 per call. Params: none
- [Agencies](https://fourzerotwo.si/v1/federal-register/agencies) [free]: Every federal agency that publishes in the Register. — $0.001 per call. Params: none

### US Federal Spending (us-spending)

US federal contracts, grants and loans from USAspending.gov: search awards by keyword, agency or recipient, read an award, profile a recipient. Docs: https://fourzerotwo.si/apis/us-spending

- [Search awards](https://fourzerotwo.si/v1/us-spending/search) [free]: Federal awards by keyword, recipient, awarding agency and date range, largest first. kind: contracts (default), idvs, grants or loans. — $0.003 per call. Params: q?, recipient?, agency?, kind?, from?, to?, limit?, page?
- [Award](https://fourzerotwo.si/v1/us-spending/award) [free]: One federal award in full: agency, recipient and parent, obligated/outlayed/potential value, dates, place of performance, NAICS and PSC. — $0.002 per call. Params: id
- [Recipient profile](https://fourzerotwo.si/v1/us-spending/recipient) [sample]: A federal recipient: name, UEI, parent, alternate names, business types, location and total amounts. Give id, or name to use the best match. — $0.02 per call. Params: name?, id?

### US Tides & Water Levels (tides)

NOAA tide stations across US coasts and the Great Lakes: high and low tide predictions, observed water levels and current station weather (water and air temperature, wind, pressure). Docs: https://fourzerotwo.si/apis/tides

- [Tide stations near a point](https://fourzerotwo.si/v1/tides/stations-near) [free]: NOAA tide-prediction stations within a radius (default 50 km) of a point, nearest first. — $0.001 per call. Params: lat, lng, radius_km?, limit?
- [Find tide stations](https://fourzerotwo.si/v1/tides/search) [free]: Search NOAA tide stations by name and/or state. — $0.001 per call. Params: name?, state?
- [Tide station details](https://fourzerotwo.si/v1/tides/station) [free]: A station's location, time zone, products offered and tidal datums. — $0.001 per call. Params: station
- [High and low tides](https://fourzerotwo.si/v1/tides/predictions) [free]: Predicted high and low tide times (local) and heights for up to 7 days from today. — $0.002 per call. Params: station, days?, datum?, units?
- [Observed water level](https://fourzerotwo.si/v1/tides/water-level) [free]: Observed 6-minute water levels for the last hours (default 6, max 72) with the latest reading. — $0.002 per call. Params: station, hours?, datum?, units?
- [Station conditions now](https://fourzerotwo.si/v1/tides/conditions) [free]: Latest water temperature, air temperature, wind and air pressure reported at a station (whichever it measures). — $0.002 per call. Params: station, units?

### US Treasury Fiscal Data (us-treasury)

US national debt to the penny, average interest rates on Treasury debt, Treasury exchange rates and daily cash balance. Docs: https://fourzerotwo.si/apis/us-treasury

- [National debt to the penny](https://fourzerotwo.si/v1/us-treasury/debt-to-penny) [free]: Total public debt outstanding, latest days. — $0.001 per call. Params: none
- [Average interest rates](https://fourzerotwo.si/v1/us-treasury/avg-interest-rates) [free]: Average interest rates on marketable and non-marketable Treasury securities. — $0.001 per call. Params: none
- [Daily cash balance](https://fourzerotwo.si/v1/us-treasury/operating-cash) [free]: Treasury General Account operating cash balance, latest days. — $0.001 per call. Params: none
- [Gold reserve](https://fourzerotwo.si/v1/us-treasury/gold-reserve) [free]: US Treasury-owned gold by location, latest. — $0.001 per call. Params: none
- [Treasury exchange rates](https://fourzerotwo.si/v1/us-treasury/exchange-rates) [free]: Quarterly Treasury reporting rates of exchange for a country's currency. — $0.001 per call. Params: currency

### US Weather (NWS) (us-weather)

US forecasts, hourly forecasts, active weather alerts and station observations from the National Weather Service. Docs: https://fourzerotwo.si/apis/us-weather

- [Point metadata](https://fourzerotwo.si/v1/us-weather/points) [free]: Forecast office, grid and nearby stations for a US lat,lon. — $0.001 per call. Params: point
- [7-day forecast](https://fourzerotwo.si/v1/us-weather/forecast) [free]: Twice-daily forecast periods for a grid square. — $0.002 per call. Params: office, x, y
- [Hourly forecast](https://fourzerotwo.si/v1/us-weather/forecast-hourly) [free]: Hourly forecast for a grid square. — $0.002 per call. Params: office, x, y
- [Active alerts by state](https://fourzerotwo.si/v1/us-weather/alerts-active) [free]: Weather alerts in force for a US state or marine area. — $0.002 per call. Params: area
- [Active alerts at a point](https://fourzerotwo.si/v1/us-weather/alerts-point) [free]: Weather alerts in force at a lat,lon. — $0.002 per call. Params: point
- [Latest observation](https://fourzerotwo.si/v1/us-weather/station-latest) [free]: Latest observed conditions at a weather station. — $0.001 per call. Params: station

### VAT Rates & Checks (vat)

UK and EU27 VAT rates, net↔gross VAT maths, and VAT-number format and check-digit validation. Docs: https://fourzerotwo.si/apis/vat

- [VAT rates](https://fourzerotwo.si/v1/vat/rates) [free]: Standard, reduced and super-reduced VAT rates for one country or all of EU27 + UK, with the date they were checked. — $0.001 per call. Params: country?
- [Add or remove VAT](https://fourzerotwo.si/v1/vat/calculate) [free]: Net to gross or gross to net at a given rate, or at a country's standard rate. — $0.001 per call. Params: amount, rate?, country?, from?
- [Validate a VAT number format](https://fourzerotwo.si/v1/vat/validate-format) [free]: Country format and check digit for UK (GB/XI) and EU VAT numbers. Does not confirm registration. — $0.001 per call. Params: vat_number

### Validators (validators)

Check-digit and format validation for IMEIs, VINs, IBANs, UK phone numbers, UK postcodes and email addresses. Docs: https://fourzerotwo.si/apis/validators

- [IMEI check digit](https://fourzerotwo.si/v1/validators/imei) [free]: Validate an IMEI (length + Luhn) and split TAC, serial and check digit. — $0.0005 per call. Params: imei
- [VIN check](https://fourzerotwo.si/v1/validators/vin) [free]: VIN format, check digit, WMI and model-year candidates. — $0.0005 per call. Params: vin
- [IBAN check](https://fourzerotwo.si/v1/validators/iban) [free]: IBAN mod-97 checksum and country length; UK sort code extracted. — $0.0005 per call. Params: iban
- [UK phone number](https://fourzerotwo.si/v1/validators/uk-phone) [free]: Classify a UK number (mobile, landline, freephone, premium…) and format as E.164. — $0.0005 per call. Params: number
- [UK postcode format](https://fourzerotwo.si/v1/validators/uk-postcode) [free]: Validate and normalise UK postcode format; split outward/inward codes. — $0.0005 per call. Params: postcode
- [Email check](https://fourzerotwo.si/v1/validators/email) [free]: Email syntax, whether the domain accepts mail, disposable and role-account flags. — $0.001 per call. Params: email

### Vehicle Decoder (NHTSA vPIC) (us-vehicles)

Decode any VIN (worldwide 17-character) and look up makes, models, manufacturers and WMI codes. Docs: https://fourzerotwo.si/apis/us-vehicles

- [Decode VIN](https://fourzerotwo.si/v1/us-vehicles/decode-vin) [free]: Make, model, year, body, engine, plant and safety equipment for a VIN. — $0.002 per call. Params: vin, modelyear?
- [Decode WMI](https://fourzerotwo.si/v1/us-vehicles/decode-wmi) [free]: Manufacturer, country and vehicle type for a World Manufacturer Identifier (first 3 VIN characters). — $0.001 per call. Params: wmi
- [All makes](https://fourzerotwo.si/v1/us-vehicles/makes) [free]: Every vehicle make in vPIC. — $0.001 per call. Params: none
- [Models for a make](https://fourzerotwo.si/v1/us-vehicles/models) [free]: Every model for a make. — $0.001 per call. Params: make
- [Models for a make and year](https://fourzerotwo.si/v1/us-vehicles/models-year) [free]: Models for a make in a model year. — $0.001 per call. Params: make, year
- [Vehicle types for a make](https://fourzerotwo.si/v1/us-vehicles/vehicle-types) [free]: Vehicle types (car, truck, motorcycle…) a make produces. — $0.001 per call. Params: make
- [Manufacturer details](https://fourzerotwo.si/v1/us-vehicles/manufacturer) [free]: Manufacturer address, country and vehicle types by name or id. — $0.001 per call. Params: name
- [WMIs for a manufacturer](https://fourzerotwo.si/v1/us-vehicles/wmis) [free]: World Manufacturer Identifiers registered to a manufacturer. — $0.001 per call. Params: name

### Vehicle Recalls & Safety (NHTSA) (us-vehicle-safety)

US safety recalls, owner complaints and NCAP crash-test ratings by make, model and year. Docs: https://fourzerotwo.si/apis/us-vehicle-safety

- [Recalls](https://fourzerotwo.si/v1/us-vehicle-safety/recalls) [free]: Safety recalls with component, summary, consequence and remedy. — $0.003 per call. Params: make, model, modelYear
- [Owner complaints](https://fourzerotwo.si/v1/us-vehicle-safety/complaints) [free]: Owner-reported safety complaints, crashes and fires. — $0.003 per call. Params: make, model, modelYear
- [Crash-test ratings](https://fourzerotwo.si/v1/us-vehicle-safety/safety-ratings) [free]: NCAP 5-star rating variants for a vehicle (returns VehicleIds for detail). — $0.002 per call. Params: make, model, modelYear
- [Crash-test detail](https://fourzerotwo.si/v1/us-vehicle-safety/safety-rating) [free]: Overall, frontal, side and rollover ratings for one VehicleId. — $0.002 per call. Params: id

### Web Reader (web)

Read any public web page as clean markdown, get its link-preview metadata, or check a URL for warning signs before opening it. Docs: https://fourzerotwo.si/apis/web

- [Read a page as markdown](https://fourzerotwo.si/v1/web/read) [sample]: Main content of a public web page as clean markdown, with title, byline, published date, canonical URL, language, word count and links. — $0.003 per call. Params: url
- [Link preview (unfurl)](https://fourzerotwo.si/v1/web/unfurl) [free]: Open Graph and Twitter card data, favicon, theme colour, JSON-LD types, RSS/Atom feeds and sitemaps for a URL. — $0.002 per call. Params: url
- [URL safety check](https://fourzerotwo.si/v1/web/url-safety) [free]: Warning signs for a URL: redirect chain and final destination, TLS certificate, domain age, punycode and brand-lookalike tricks, bare IPs, and security-header grade. — $0.003 per call. Params: url

### World Bank Indicators (world-bank)

GDP, population, inflation, debt, trade, development and climate indicators for every country. Docs: https://fourzerotwo.si/apis/world-bank

- [Country profile](https://fourzerotwo.si/v1/world-bank/country) [free]: Region, income level, capital and coordinates for a country. — $0.001 per call. Params: country
- [All countries](https://fourzerotwo.si/v1/world-bank/countries) [free]: Every country and aggregate with region and income group. — $0.001 per call. Params: none
- [GDP (current US$)](https://fourzerotwo.si/v1/world-bank/gdp) [free]: GDP (current US$) for a country, last 10 years (World Bank WDI NY.GDP.MKTP.CD). — $0.002 per call. Params: country
- [GDP per capita (current US$)](https://fourzerotwo.si/v1/world-bank/gdp-per-capita) [free]: GDP per capita (current US$) for a country, last 10 years (World Bank WDI NY.GDP.PCAP.CD). — $0.002 per call. Params: country
- [GDP growth (annual %)](https://fourzerotwo.si/v1/world-bank/gdp-growth) [free]: GDP growth (annual %) for a country, last 10 years (World Bank WDI NY.GDP.MKTP.KD.ZG). — $0.002 per call. Params: country
- [Population, total](https://fourzerotwo.si/v1/world-bank/population) [free]: Population, total for a country, last 10 years (World Bank WDI SP.POP.TOTL). — $0.002 per call. Params: country
- [Inflation, consumer prices (annual %)](https://fourzerotwo.si/v1/world-bank/inflation) [free]: Inflation, consumer prices (annual %) for a country, last 10 years (World Bank WDI FP.CPI.TOTL.ZG). — $0.002 per call. Params: country
- [Unemployment (% of labour force, ILO estimate)](https://fourzerotwo.si/v1/world-bank/unemployment) [free]: Unemployment (% of labour force, ILO estimate) for a country, last 10 years (World Bank WDI SL.UEM.TOTL.ZS). — $0.002 per call. Params: country
- [Life expectancy at birth (years)](https://fourzerotwo.si/v1/world-bank/life-expectancy) [free]: Life expectancy at birth (years) for a country, last 10 years (World Bank WDI SP.DYN.LE00.IN). — $0.002 per call. Params: country
- [Individuals using the Internet (% of population)](https://fourzerotwo.si/v1/world-bank/internet-users) [free]: Individuals using the Internet (% of population) for a country, last 10 years (World Bank WDI IT.NET.USER.ZS). — $0.002 per call. Params: country
- [Central government debt (% of GDP)](https://fourzerotwo.si/v1/world-bank/government-debt) [free]: Central government debt (% of GDP) for a country, last 10 years (World Bank WDI GC.DOD.TOTL.GD.ZS). — $0.002 per call. Params: country
- [Exports of goods and services (% of GDP)](https://fourzerotwo.si/v1/world-bank/exports-share) [free]: Exports of goods and services (% of GDP) for a country, last 10 years (World Bank WDI NE.EXP.GNFS.ZS). — $0.002 per call. Params: country
- [Foreign direct investment, net inflows (US$)](https://fourzerotwo.si/v1/world-bank/fdi-inflows) [free]: Foreign direct investment, net inflows (US$) for a country, last 10 years (World Bank WDI BX.KLT.DINV.CD.WD). — $0.002 per call. Params: country
- [Urban population (% of total)](https://fourzerotwo.si/v1/world-bank/urban-population) [free]: Urban population (% of total) for a country, last 10 years (World Bank WDI SP.URB.TOTL.IN.ZS). — $0.002 per call. Params: country
- [CO2 emissions per capita (t CO2e)](https://fourzerotwo.si/v1/world-bank/co2-per-capita) [free]: CO2 emissions per capita (t CO2e) for a country, last 10 years (World Bank WDI EN.GHG.CO2.PC.CE.AR5). — $0.002 per call. Params: country
- [Poverty headcount at $3.00/day (% of population)](https://fourzerotwo.si/v1/world-bank/poverty-rate) [free]: Poverty headcount at $3.00/day (% of population) for a country, last 10 years (World Bank WDI SI.POV.DDAY). — $0.002 per call. Params: country
- [Gini index](https://fourzerotwo.si/v1/world-bank/gini) [free]: Gini index for a country, last 10 years (World Bank WDI SI.POV.GINI). — $0.002 per call. Params: country
- [Access to electricity (% of population)](https://fourzerotwo.si/v1/world-bank/electricity-access) [free]: Access to electricity (% of population) for a country, last 10 years (World Bank WDI EG.ELC.ACCS.ZS). — $0.002 per call. Params: country
- [Any indicator](https://fourzerotwo.si/v1/world-bank/indicator) [free]: Any World Development Indicator for a country (most recent values). — $0.002 per call. Params: country, indicator
- [Current account balance (% of GDP)](https://fourzerotwo.si/v1/world-bank/current-account) [free]: Current account balance (% of GDP) for a country, last 10 years (World Bank WDI BN.CAB.XOKA.GD.ZS). — $0.002 per call. Params: country
- [GNI per capita, PPP (current international $)](https://fourzerotwo.si/v1/world-bank/gni-per-capita-ppp) [free]: GNI per capita, PPP (current international $) for a country, last 10 years (World Bank WDI NY.GNP.PCAP.PP.CD). — $0.002 per call. Params: country
- [GDP per capita, PPP (current international $)](https://fourzerotwo.si/v1/world-bank/gdp-per-capita-ppp) [free]: GDP per capita, PPP (current international $) for a country, last 10 years (World Bank WDI NY.GDP.PCAP.PP.CD). — $0.002 per call. Params: country
- [Imports of goods and services (% of GDP)](https://fourzerotwo.si/v1/world-bank/imports-share) [free]: Imports of goods and services (% of GDP) for a country, last 10 years (World Bank WDI NE.IMP.GNFS.ZS). — $0.002 per call. Params: country
- [Tax revenue (% of GDP)](https://fourzerotwo.si/v1/world-bank/tax-revenue) [free]: Tax revenue (% of GDP) for a country, last 10 years (World Bank WDI GC.TAX.TOTL.GD.ZS). — $0.002 per call. Params: country
- [Military expenditure (% of GDP)](https://fourzerotwo.si/v1/world-bank/military-spending) [free]: Military expenditure (% of GDP) for a country, last 10 years (World Bank WDI MS.MIL.XPND.GD.ZS). — $0.002 per call. Params: country
- [Current health expenditure (% of GDP)](https://fourzerotwo.si/v1/world-bank/health-spending) [free]: Current health expenditure (% of GDP) for a country, last 10 years (World Bank WDI SH.XPD.CHEX.GD.ZS). — $0.002 per call. Params: country
- [Government expenditure on education (% of GDP)](https://fourzerotwo.si/v1/world-bank/education-spending) [free]: Government expenditure on education (% of GDP) for a country, last 10 years (World Bank WDI SE.XPD.TOTL.GD.ZS). — $0.002 per call. Params: country
- [Fertility rate (births per woman)](https://fourzerotwo.si/v1/world-bank/fertility-rate) [free]: Fertility rate (births per woman) for a country, last 10 years (World Bank WDI SP.DYN.TFRT.IN). — $0.002 per call. Params: country
- [Labour force participation rate (% of population 15+)](https://fourzerotwo.si/v1/world-bank/labour-participation) [free]: Labour force participation rate (% of population 15+) for a country, last 10 years (World Bank WDI SL.TLF.CACT.ZS). — $0.002 per call. Params: country
- [Renewable energy consumption (% of final energy)](https://fourzerotwo.si/v1/world-bank/renewable-energy-share) [free]: Renewable energy consumption (% of final energy) for a country, last 10 years (World Bank WDI EG.FEC.RNEW.ZS). — $0.002 per call. Params: country
- [Mobile cellular subscriptions (per 100 people)](https://fourzerotwo.si/v1/world-bank/mobile-subscriptions) [free]: Mobile cellular subscriptions (per 100 people) for a country, last 10 years (World Bank WDI IT.CEL.SETS.P2). — $0.002 per call. Params: country
- [Official exchange rate (local currency per US$, period average)](https://fourzerotwo.si/v1/world-bank/exchange-rate) [free]: Official exchange rate (local currency per US$, period average) for a country, last 10 years (World Bank WDI PA.NUS.FCRF). — $0.002 per call. Params: country
- [Population aged 65+ (% of total)](https://fourzerotwo.si/v1/world-bank/population-65-plus) [free]: Population aged 65+ (% of total) for a country, last 10 years (World Bank WDI SP.POP.65UP.TO.ZS). — $0.002 per call. Params: country
- [Manufacturing value added (% of GDP)](https://fourzerotwo.si/v1/world-bank/manufacturing-share) [free]: Manufacturing value added (% of GDP) for a country, last 10 years (World Bank WDI NV.IND.MANF.ZS). — $0.002 per call. Params: country

### World Public Holidays (holidays)

Public holidays for ~40 countries and their regions, is-it-a-holiday checks and business-day maths. Docs: https://fourzerotwo.si/apis/holidays

- [Holidays in a year](https://fourzerotwo.si/v1/holidays/year) [free]: Official public holidays for a country (or region provider, e.g. Germany/Bavaria) in a year. — $0.001 per call. Params: country, year?
- [Holiday & business-day check](https://fourzerotwo.si/v1/holidays/check) [free]: Is a date a public holiday or business day in a country; add N business days; next business day. — $0.001 per call. Params: country, date, add?
- [Supported countries](https://fourzerotwo.si/v1/holidays/countries) [free]: Every country and regional provider supported. — $0.0005 per call. Params: none

### arXiv Papers (arxiv)

Search arXiv preprints and get clean metadata and abstracts, plus the newest papers in AI, ML, NLP, physics, finance and more. Docs: https://fourzerotwo.si/apis/arxiv

- [Search papers](https://fourzerotwo.si/v1/arxiv/search): Search arXiv by keywords, title, author and/or category; sort by relevance or newest. — $0.002 per call. Params: q?, title?, author?, category?, sort?, limit?, start?
- [Paper by id](https://fourzerotwo.si/v1/arxiv/paper): Full metadata for up to 20 arXiv ids: title, authors, abstract, categories, dates, DOI, journal ref, links. — $0.001 per call. Params: id
- [Newest in a category](https://fourzerotwo.si/v1/arxiv/recent): The newest submissions in any arXiv category. — $0.002 per call. Params: category, limit?
- [Newest in Artificial Intelligence](https://fourzerotwo.si/v1/arxiv/recent-cs-ai): The newest arXiv submissions in cs.AI (Artificial Intelligence). — $0.002 per call. Params: limit?
- [Newest in Machine Learning](https://fourzerotwo.si/v1/arxiv/recent-cs-lg): The newest arXiv submissions in cs.LG (Machine Learning). — $0.002 per call. Params: limit?
- [Newest in Computation and Language (NLP)](https://fourzerotwo.si/v1/arxiv/recent-cs-cl): The newest arXiv submissions in cs.CL (Computation and Language (NLP)). — $0.002 per call. Params: limit?
- [Newest in Computer Vision](https://fourzerotwo.si/v1/arxiv/recent-cs-cv): The newest arXiv submissions in cs.CV (Computer Vision). — $0.002 per call. Params: limit?
- [Newest in Cryptography and Security](https://fourzerotwo.si/v1/arxiv/recent-cs-cr): The newest arXiv submissions in cs.CR (Cryptography and Security). — $0.002 per call. Params: limit?
- [Newest in Robotics](https://fourzerotwo.si/v1/arxiv/recent-cs-ro): The newest arXiv submissions in cs.RO (Robotics). — $0.002 per call. Params: limit?
- [Newest in Statistics: Machine Learning](https://fourzerotwo.si/v1/arxiv/recent-stat-ml): The newest arXiv submissions in stat.ML (Statistics: Machine Learning). — $0.002 per call. Params: limit?
- [Newest in Quantum Physics](https://fourzerotwo.si/v1/arxiv/recent-quant-ph): The newest arXiv submissions in quant-ph (Quantum Physics). — $0.002 per call. Params: limit?
- [Newest in Astrophysics](https://fourzerotwo.si/v1/arxiv/recent-astro-ph): The newest arXiv submissions in astro-ph (Astrophysics). — $0.002 per call. Params: limit?
- [Newest in Quantitative Finance](https://fourzerotwo.si/v1/arxiv/recent-q-fin): The newest arXiv submissions in q-fin (Quantitative Finance). — $0.002 per call. Params: limit?
- [Newest in Economics](https://fourzerotwo.si/v1/arxiv/recent-econ): The newest arXiv submissions in econ (Economics). — $0.002 per call. Params: limit?
- [Newest in Quantitative Biology](https://fourzerotwo.si/v1/arxiv/recent-q-bio): The newest arXiv submissions in q-bio (Quantitative Biology). — $0.002 per call. Params: limit?

### openFDA (openfda)

US drug labels, adverse events and recalls, medical device events, recalls and clearances, and food recalls. Docs: https://fourzerotwo.si/apis/openfda

- [Drug adverse events](https://fourzerotwo.si/v1/openfda/drug-adverse-events) [free]: FAERS adverse event reports for a drug. — $0.003 per call. Params: search, limit?
- [Drug recalls](https://fourzerotwo.si/v1/openfda/drug-recalls) [free]: Drug recall enforcement reports. — $0.003 per call. Params: search, limit?
- [NDC directory](https://fourzerotwo.si/v1/openfda/drug-ndc) [free]: National Drug Code directory entries. — $0.003 per call. Params: search, limit?
- [Drug approvals](https://fourzerotwo.si/v1/openfda/drugs-fda) [free]: FDA approval history (Drugs@FDA) for an application or brand. — $0.003 per call. Params: search, limit?
- [Device adverse events](https://fourzerotwo.si/v1/openfda/device-events) [free]: MAUDE medical device adverse event reports. — $0.003 per call. Params: search, limit?
- [Device recalls](https://fourzerotwo.si/v1/openfda/device-recalls) [free]: Medical device recalls. — $0.003 per call. Params: search, limit?
- [Device 510(k) clearances](https://fourzerotwo.si/v1/openfda/device-510k) [free]: Premarket 510(k) clearances. — $0.003 per call. Params: search, limit?
- [Food recalls](https://fourzerotwo.si/v1/openfda/food-recalls) [free]: Food recall enforcement reports. — $0.003 per call. Params: search, limit?
- [Food & supplement adverse events](https://fourzerotwo.si/v1/openfda/food-adverse-events) [free]: CAERS reports for foods, supplements and cosmetics. — $0.003 per call. Params: search, limit?
- [Drug labels](https://fourzerotwo.si/v1/openfda/drug-labels) [free]: Structured prescribing information: indications, dosage, warnings, interactions. — $0.003 per call. Params: search, limit?