KnownGate
KnownGate is the food verification layer for people and AI agents: it checks food against what must not be in it, or a number it must stay under, and returns evidence-backed verdicts with their sources and read dates.
MCP endpoint
https://mcp.knowngate.com
Streamable HTTP and SSE. The versioned path
https://www.knowngate.com/api/knowngate/v0/mcp serves the same server and
stays documented, but the subdomain is the address to configure: it does not
bake a version number into anything you publish.
- Server card: https://www.knowngate.com/.well-known/mcp/server-card.json
- Evidence standard: https://www.knowngate.com/standard and, as a document you can build against, https://www.knowngate.com/standard/v1.json
- For agents: https://www.knowngate.com/llms.txt
Authentication. A Bearer key, and a free one is created in-band with the
register tool. There is no signup to call this.
Tools
| Tool | Rules on |
|---|---|
check_item | One product or dish |
check_venue | A whole menu |
check_plan | A set of items, a recipe, a basket |
register | Mints a free key, in-band |
Verdicts
Every check returns exactly one of four, with the source it rested on and the date that source was read:
no_conflict_found · conflict_found · ask_one_question · couldnt_verify
Unknown counts as no. A claim can create a conflict but never a clear. The word "safe" is not used anywhere in this system. What each verdict means, and the highest verdict each kind of source can reach, is published in full at /standard.
Verdicts are not cryptographically signed in v1.0, and the profile says so
(signed_verdicts: false). A saved record at /ck/{id} is the durable
artifact: it carries the subject, the premise, the verdict, its source and read
date, and the standard version it was issued under.
Licensing
- Code: MIT.
- Evidence standard (
/standard,/standard/v1.json): CC-BY-4.0. Take it and build on it. A standard others build against is worth more to us than a database others cannot see.
Project artifacts
- KnownGate challenge brief: project context, challenge requirements, product direction, WebMCP contract, judging strategy, and open decisions captured on 30 August 2026.
- KnownGate build brief: implementation requirements, product doctrine, screens, design system, WebMCP tools, API contracts, fixtures, evaluations, and delivery criteria.
Getting Started
First, run the development server:
npm run dev
# or
yarn dev
# or
pnpm dev
# or
bun dev
Open http://localhost:3000 with your browser to see the result.
You can start editing the page by modifying app/page.tsx. The page auto-updates as you edit the file.
This project uses next/font to automatically optimize and load Geist, a new font family for Vercel.
Learn More
To learn more about Next.js, take a look at the following resources:
- Next.js Documentation - learn about Next.js features and API.
- Learn Next.js - an interactive Next.js tutorial.
You can check out the Next.js GitHub repository - your feedback and contributions are welcome!
Deploy on Vercel
The easiest way to deploy your Next.js app is to use the Vercel Platform from the creators of Next.js.
Check out our Next.js deployment documentation for more details.