# Agraris > Agraris is an open registry of AI agents and tools (MCP servers, APIs, SDKs and similar) built for Robinhood Chain. Builders submit their own listings; each one is reviewed before it is published. Listings are not an endorsement: Agraris does not vet, audit or guarantee them unless a listing is marked "Verified". Every published listing has a detail page at `https://agraris.xyz/agent.html?id=`. Each listing has a `kind` of `agent` or `tool`. ## Machine-readable data - [JSON API: all published listings](https://agraris.xyz/api/agents.json): one static JSON file with every approved agent and tool, newest first. Regenerated automatically once a day. Filter by the `kind` field (`agent` or `tool`). `live_status` (`up`, `down` or null) only says whether the listing's demo URL answered the last automatic check (every 6 hours); it is not an endorsement. `owner_signed` / `owner_signed_at` say that the wallet returned by the listed contract's `owner()` on Robinhood Chain signed a message for Agraris, checked on the server and re-checked every 6 hours; it only means the owner wallet signed a message and is not an endorsement. `builder_github` is the lowercase GitHub owner from the listing's `repo_url` (null when the repo is not on github.com); anyone can list a repo, so it does not show who submitted the listing. - [API documentation](https://agraris.xyz/docs.html): field schema for the JSON file, plus the live REST API for custom queries. - [RSS feed](https://agraris.xyz/rss.xml): the 50 most recently published listings. - [Sitemap](https://agraris.xyz/sitemap.xml): every listing page and category page. ## Browse - [Search all listings](https://agraris.xyz/search.html): search and filter by category. - [Tools only](https://agraris.xyz/search.html?kind=tool): tools, MCP servers, APIs and SDKs. - [Builders](https://agraris.xyz/builders.html): listings grouped by the GitHub owner in their repo URL, A to Z. One owner: `https://agraris.xyz/builder.html?u=`. - [Submit a listing](https://agraris.xyz/publish.html): open form, no account needed.