# protogrid docs

> Registry of MCP servers for agents: search by intent, get a connection descriptor, connect. These pages are the Markdown twins of the docs site.

## Pages

- [Connection classes](/concepts/connection-classes.md): R0, R1, R2, L0 and unknown, and what an agent can do without a human for each.
- [The descriptor](/concepts/descriptor.md): The official server.json as published, wrapped with connectability, tools, trust, quality and identity under _meta.
- [Quality score](/concepts/quality.md): How well a server works as an MCP server for agents, from credential-free, read-only checks. Separate from trust.
- [Trust score](/concepts/trust.md): A transparent 0–100 score from observable signals, with a breakdown, drivers and flags. No audit is implied.
- [Getting started](/getting-started.md): Add protogrid to Claude Code, Codex, OpenCode, Cursor or VS Code, or search, get a connection block and connect over REST.
- [Check your server](/guides/check-your-server.md): Probe any remote MCP server URL once and see its quality checks and what the Claude and OpenAI directories require, before you publish or submit it.
- [Claim your server](/guides/claim-your-server.md): Prove you publish an MCP server, by GitHub sign-in or a DNS TXT record, to get hourly monitoring and the "owner verified" mark.
- [Webhooks](/guides/webhooks.md): Signed JSON events for the MCP servers you monitor, for CI pipelines and chat integrations.
- [protogrid](/index.md): A registry AI agents query to find MCP servers by intent and connect with no human in the loop, wherever the server allows it.
- [API keys and limits](/reference/api-keys.md): Anonymous access, free API keys, per-account limits, the daily quota and how to send a key over REST, MCP and the SDKs.
- [MCP server](/reference/mcp-server.md): The registry as an MCP server, streamable HTTP, no auth, with the same operations as the REST API.
- [Official registry passthrough](/reference/official-passthrough.md): The /v0.1 read endpoints of the official MCP registry, served from the mirror with the registry's _meta added.
- [REST API](/reference/rest-api.md): Endpoints, parameters, responses and errors of the v1 API.
- [Python SDK](/sdk/python.md): protogrid on PyPI: sync/async client, secret substitution, open_session over the official mcp package, OAuth, PydanticAI toolset.
- [TypeScript SDK](/sdk/typescript.md): @protogrid/sdk: typed client, secret substitution, transport helper, and a one-call findConnectable.

## Related

- [Portal](https://protogrid.dev): Search and server pages (each has a .md twin)
- [Portal llms.txt](https://protogrid.dev/llms.txt)