# Metal Sentinel > Real-time and historical precious and base metal prices, plus crypto, forex and mining stock quotes, through a single fast REST API. Metal Sentinel is a market data API sold through RapidAPI. It offers a free plan with 7500 requests per month and no credit card required, and every plan gets the same data: live spot quotes for ten metals refreshed every 15 seconds, historical daily prices, and mining stock quotes. Pricing and plan limits: https://metal-sentinel.com/pricing ## Features - Free plan with 7500 requests per month, 60 requests per minute - Ten spot-traded metals: gold (AU), silver (AG), platinum (PT), palladium (PD), rhodium (RH), copper (CU), nickel (NI), aluminum (AL), lead (PB), zinc (ZN) - Quotes in 180+ fiat currencies and 90+ crypto tokens - Gold karat prices (24k, 18k, 14k, 9k) and silver fineness prices (925 and more) - Historical daily price data with configurable date ranges - Market status (open/close) with next transition time - Mining and commodity equities data - Free embeddable price widgets, no API key required ## Authentication All endpoints are REST (GET) on `https://metal-sentinel.p.rapidapi.com` and require two headers issued by RapidAPI: `x-rapidapi-key` (your key) and `x-rapidapi-host: metal-sentinel.p.rapidapi.com`. Example: curl "https://metal-sentinel.p.rapidapi.com/api/metal-quote?symbol=AU¤cy=USD" \ -H "x-rapidapi-host: metal-sentinel.p.rapidapi.com" \ -H "x-rapidapi-key: your_key" ## API Endpoints Full reference with parameters and sample responses: [API Endpoints](https://metal-sentinel.com/endpoints) Machine-readable description: [OpenAPI 3.1 spec](https://metal-sentinel.com/openapi.json). API catalog (RFC 9727): https://metal-sentinel.com/.well-known/api-catalog - `/api/metal-quote?symbol=AU¤cy=USD` — Current spot price for one metal in one currency - `/api/gold-price` — Gold spot price with calculated karat prices - `/api/silver-price` — Silver spot price with calculated fineness prices - `/api/metal-history` — Historical daily prices with configurable date range and limit - `/api/historical-points` — Point-in-time snapshots at 30d, 60d, 1y and 5y intervals - `/api/crypto-quote` — Live cryptocurrency quotes with 24h comparison - `/api/forex-quote` — Foreign exchange rates with USD conversion - `/api/get-stock` — Live mining and commodity equities data - `/api/market-status` — Market open/close status and next transition time - `/api/allowed-metals` — Supported metal symbols - `/api/allowed-currencies` — Supported fiat currency codes - `/api/allowed-cryptos` — Supported cryptocurrency symbols ## Metal Pages Each page shows a live quote, the matching endpoint and recent coverage for that metal. - [Gold Price API](https://metal-sentinel.com/gold-price-api) - [Silver Price API](https://metal-sentinel.com/silver-price-api) - [Platinum Price API](https://metal-sentinel.com/platinum-price-api) - [Palladium Price API](https://metal-sentinel.com/palladium-price-api) - [Rhodium Price API](https://metal-sentinel.com/rhodium-price-api) - [Copper Price API](https://metal-sentinel.com/copper-price-api) - [Nickel Price API](https://metal-sentinel.com/nickel-price-api) - [Aluminum Price API](https://metal-sentinel.com/aluminum-price-api) - [Lead Price API](https://metal-sentinel.com/lead-price-api) - [Zinc Price API](https://metal-sentinel.com/zinc-price-api) ## Embeddable Widgets Free, embeddable metal price widgets that work on any website. No signup, no API key, no script dependencies. Each widget is a single `