About anlyon.dev

anlyon.dev is a free index of what MCP servers' tools can do, so you can see it before you install one. It is built by Anlyon. Shared limits and receipts for AI agent actions.

Where the data comes from

• Server metadata comes from the official MCP Registry, synced every hour. A server the registry marks deleted is removed on the next sync.
• Tools come from the server: an anonymous tools/list for remote servers. Local (stdio) servers are listed without tools for now; anlyon.dev never runs a third-party package.
• Classes and findings come from deterministic rules described on the methodology page.

For server operators

The indexer identifies itself as anlyon.dev-indexer/0.1 (+https://anlyon.dev/about; support@anlyon.com). It sends initialize, notifications/initialized and tools/list, ends the session, and stops at the first 401, recording only the auth scheme and the scopes your server advertises. It never sends credentials and never calls a tool. To be left out, email support@anlyon.com.

Contact

support@anlyon.com. See also report a listing, takedown and responsible disclosure.