Check an MCP server

Paste your server’s URL. It gets the checks that come from real ChatGPT, Claude, Cursor and Muse rejections: handshake, tool annotations, OAuth metadata, icon, privacy policy, DNS. Takes up to half a minute.

MCP server URL

Check it

We connect the way a store’s scanner does, without signing in. Nothing is stored. Servers behind sign-in get the server and OAuth checks; run mcplane with a token for the tool checks.

The full check

This page runs mcplane’s checks. From your terminal it also tests TLS 1.2 and your plugin repo, checks tools behind sign-in, and prepares each store’s submission.

npx mcplane preflight --url https://mcp.example.com/mcp

Or let your coding agent run it:

claude mcp add mcplane -- npx -y mcplane mcp

mcplane is open source, from the maker of Review Times. When you submit, it logs the wait here.

We ran these checks on every server in Claude’s directory: 22% of them would hit a known ChatGPT blocker.