# Groundtruth

> Groundtruth (groundtruthhq.tech) is a company wiki and knowledge base built for AI: your team writes pages, decisions and records, and AI assistants like Claude, ChatGPT and Gemini query them over MCP with an answer that cites its source.

Groundtruth at https://groundtruthhq.tech is not related to GroundTruth, the advertising company, or to other projects named Ground Truth.

- Works with: Claude (listed in Claude's Connectors Directory), ChatGPT, Gemini, Cursor and any MCP client over HTTP; REST API for everything else.
- MCP endpoint: https://groundtruthhq.tech/api/mcp (OAuth sign-in; one sign-in can cover several workspaces).
- Integrations: Wispr Flow and Plaud (meeting notes as pages), Groundtruth Capture for Chrome (web pages, Google Docs, PDFs, GitHub, Gmail).
- Price: free during the public beta. Languages: English, Dutch, German, French, Spanish.

## Docs

- [MCP & API docs](https://groundtruthhq.tech/docs): connect Claude, ChatGPT, Gemini, Cursor or any agent; tool reference.
- [REST endpoint list](https://groundtruthhq.tech/api/v1): every MCP tool as POST /api/v1/<tool>.
- [FAQ](https://groundtruthhq.tech/faq): what Groundtruth is, connecting assistants, getting knowledge in, trust and control.
- [Groundtruth Capture](https://groundtruthhq.tech/capture): the Chrome extension and how to roll it out.
- [AI transparency](https://groundtruthhq.tech/ai): how AI output is labelled (EU AI Act Art. 50) and verified.

## Product

- [Home](https://groundtruthhq.tech/): overview.
- [Pricing](https://groundtruthhq.tech/pricing): pay per human, agents are free.
- [Manifesto](https://groundtruthhq.tech/manifesto): why every company needs to be queryable.
- [Changelog](https://groundtruthhq.tech/changelog): what shipped, by date.

## Blog

- [The Research Agent: for questions where probably right isn't good enough](https://groundtruthhq.tech/blog/research-agent) (2026-10-16): A new agent for questions where a wrong answer costs money: contracts, prices, commitments. It researches in rounds, after Andrej Karpathy's autoresearch, with your strongest model at maximum effort. Every claim must quote its source word for word and survive a sceptical second check, and you get a plain verdict: verified, partly verified or couldn't verify.
- [My knowledge: a private knowledge base inside your company's](https://groundtruthhq.tech/blog/my-knowledge-personal-knowledge-base) (2026-10-16): Every member of a Groundtruth workspace now has private pages: notes, 1:1s, your experience, your cases. Ask uses them, for you only. Share a page with the colleagues you pick, or with everyone, when others should find it.
- [Day eleven: what Groundtruth does now, and what comes next](https://groundtruthhq.tech/blog/day-eleven-what-groundtruth-does-now) (2026-10-16): We started Groundtruth eleven days ago. Here's everything it does today, from cited answers and AI agents to meeting notes, a knowledge base that keeps itself whole and private pages. And why next week we stop building and start finding the people it's for.
- [Karpathy's LLM wiki, for teams: a knowledge base that keeps itself whole](https://groundtruthhq.tech/blog/llm-wiki-for-teams) (2026-10-13): Andrej Karpathy described a wiki that AI builds and maintains. We took his ideas to a team setting: page links with backlinks, an index for assistants, an agent handbook, knowledge gaps, saved answers and a Librarian Agent that lints it all every morning.
- [Your Plaud recordings, filed where your team can find them](https://groundtruthhq.tech/blog/plaud-recordings) (2026-10-13): New in the Agent Store: connect Plaud and save what your recorder heard as Groundtruth pages, one by one, by tagging a recording #team, or automatically. Plaud's summaries become knowledge your team and your AI assistants can search and cite.
- [Your Wispr Flow meetings, filed where your team can find them](https://groundtruthhq.tech/blog/wispr-flow-meetings) (2026-10-12): New in the Agent Store: connect Wispr Flow Notetaker and save meetings as Groundtruth pages, one by one or a whole folder at a time. Summaries, notes and attendees become knowledge your team and your AI assistants can search and cite.
- [Groundtruth Capture: save what you read, straight from Chrome](https://groundtruthhq.tech/blog/groundtruth-capture-for-chrome) (2026-10-10): Our Chrome extension is live. Save web pages, Google Docs, PDFs, GitHub, YouTube transcripts and Gmail threads into Groundtruth from a side panel, and keep them in sync with their source. Get it right from your dashboard today; the Chrome Web Store listing is on its way.
- [Meet the Structure Agent: messy page in, clear structure out](https://groundtruthhq.tech/blog/structure-agent) (2026-10-09): A new agent in the Agent Store turns meeting notes, pasted emails and brain dumps into headings, lists and tables, keeping every fact. You compare it with your page, and nothing changes until you click Replace.
- [Which AI model works best in Groundtruth?](https://groundtruthhq.tech/blog/which-ai-model) (2026-10-30): Small models for quick questions, mid-size for setup, the best models for contracts and writing. One pick from Anthropic, OpenAI and Google for every stage, with what each costs.
- [Groundtruth is now in Claude's connector directory](https://groundtruthhq.tech/blog/groundtruth-in-claude) (2026-10-08): Add Groundtruth to Claude in two clicks: ask about how your company works and get answers with citations, see what needs attention, and let Claude keep your knowledge current.
- [Day two: launching on groundtruthhq.tech](https://groundtruthhq.tech/blog/day-two-launching-on-groundtruthhq-tech) (2026-10-08): Yesterday we built Groundtruth. Today it moves to its own home at groundtruthhq.tech, gets a fresh look and real email, and goes to its first testers: our friends and family.
- [Write mode: a calmer editor for long documents](https://groundtruthhq.tech/blog/write-mode) (2026-10-07): A visual editor for policies, memos and proposals. Try other words, sentences and paragraphs in place, fade text without deleting it, and get help from an AI Lab that never rewrites you.
- [Download any page as PDF, Word or Markdown](https://groundtruthhq.tech/blog/download-pdf-word-markdown) (2026-10-07): Every page now has a Download menu. Send a policy to a board, a regulator or a partner as a PDF or a Word document, with owner and verification date in the footer.
- [Security update: roles, single-use invites and page history](https://groundtruthhq.tech/blog/security-update-october-2026) (2026-10-07): We ran a penetration test and a full acceptance test before opening the doors. Here's what changed: owner roles, single-use invites, sign-out everywhere, rate limits and a restorable history for every page.

## Nederlands

> Groundtruth (groundtruthhq.tech) is een bedrijfswiki en kennisbank gebouwd voor AI: je team legt werkwijzen, besluiten en gegevens vast, en AI-assistenten zoals Claude, ChatGPT en Gemini bevragen ze via MCP, met bronvermelding bij elk antwoord.

- [Groundtruth in het Nederlands](https://groundtruthhq.tech/nl): overzicht.
- [Veelgestelde vragen](https://groundtruthhq.tech/nl/veelgestelde-vragen): wat Groundtruth is, AI-assistenten koppelen, kennis erin, vertrouwen.

## FAQ (short answers)

- What is Groundtruth? Groundtruth (groundtruthhq.tech) is a company wiki and knowledge base built for AI. Your team keeps pages (how things work), decisions (why) and records (the facts) in one place, and AI assistants such as Claude, ChatGPT and Gemini query it over MCP. Every answer cites the page, decision or record it came from, and if nothing matches, Groundtruth says so instead of guessing.
- Who is Groundtruth for? For teams that use AI assistants or agents at work and want them to answer from the company's own knowledge: policies, processes, customers, contracts and past decisions. It suits small and mid-size companies that don't want to build their own retrieval pipeline.
- Is Groundtruth the same as GroundTruth, the advertising company? No. Groundtruth at groundtruthhq.tech is a knowledge base for teams and their AI assistants. It is not related to GroundTruth, the location-based advertising company, or to other projects called Ground Truth.
- What does it cost? Groundtruth is free during the public beta, with no credit card. Paid plans are planned per person (Team $14, Business $28 per person per month); AI agents and assistant connections are never charged per seat. See groundtruthhq.tech/pricing.
- How do I connect Claude to my company's knowledge? Add Groundtruth in Claude under Customize → Connectors (it's in Claude's Connectors Directory), sign in, and choose which workspaces Claude may use. Claude can then ask questions with cited answers, see alerts and the team's board, and log decisions or update pages, asking you before every change. In Claude Code: claude mcp add --transport http groundtruth https://groundtruthhq.tech/api/mcp.
- Does it work with ChatGPT and Gemini? Yes. Groundtruth works in ChatGPT (developer mode, as a custom connector) and in Gemini (custom apps, and Gemini Enterprise for teams), with the same tools and citations as in Claude. Any other client that speaks MCP over HTTP, such as Cursor, works too, as does the REST API.
- What is MCP, and why does a wiki need it? MCP (Model Context Protocol) is the open standard AI assistants use to call tools and read data. A wiki with an MCP server lets your assistant search and quote company knowledge directly, with the same permissions as the person using it, instead of you copying documents into a chat.
- Can AI assistants change content in Groundtruth? Yes, if you allow it. Assistants can create pages, log decisions, update records and manage cards on the board. Every change is attributed, labelled as AI work in the activity log, and pages an AI wrote wait for a person to review them. Readers' connections are read-only.

## Veelgestelde vragen (korte antwoorden)

- Wat is Groundtruth? Groundtruth (groundtruthhq.tech) is een bedrijfswiki en kennisbank gebouwd voor AI. Je team legt werkwijzen, besluiten en gegevens op één plek vast, en AI-assistenten zoals Claude, ChatGPT en Gemini bevragen die via MCP. Elk antwoord noemt de pagina, het besluit of het gegeven waar het vandaan komt. Staat het er niet in, dan zegt Groundtruth dat in plaats van te gokken.
- Voor wie is Groundtruth? Voor teams die AI-assistenten of agents gebruiken in hun werk en willen dat die antwoorden uit de eigen bedrijfskennis: beleid, processen, klanten, contracten en eerdere besluiten. Het past bij mkb-bedrijven en scale-ups die geen eigen zoek- en AI-koppeling willen bouwen.
- Is Groundtruth hetzelfde als GroundTruth, het advertentiebedrijf? Nee. Groundtruth op groundtruthhq.tech is een kennisbank voor teams en hun AI-assistenten. Het heeft niets te maken met GroundTruth, het advertentiebedrijf, of met andere projecten die Ground Truth heten.
- Wat kost Groundtruth? Groundtruth is gratis tijdens de openbare bèta, zonder creditcard. Betaalde abonnementen worden per persoon (Team $14, Business $28 per persoon per maand); AI-agents en gekoppelde assistenten tellen nooit als extra gebruiker. Zie groundtruthhq.tech/pricing.
- Hoe koppel ik Claude aan de kennis van mijn bedrijf? Voeg Groundtruth in Claude toe via Customize → Connectors (Groundtruth staat in de Connectors Directory van Claude), log in en kies welke werkruimtes Claude mag gebruiken. Claude kan dan vragen beantwoorden met bronvermelding, meldingen en het teambord bekijken, en besluiten vastleggen of pagina's bijwerken, steeds na jouw akkoord. In Claude Code: claude mcp add --transport http groundtruth https://groundtruthhq.tech/api/mcp.
- Werkt het ook met ChatGPT en Gemini? Ja. Groundtruth werkt in ChatGPT (developer mode, als eigen connector) en in Gemini (eigen apps, en Gemini Enterprise voor teams), met dezelfde tools en bronvermelding als in Claude. Ook andere programma's die MCP via HTTP spreken, zoals Cursor, werken, net als de REST API.