MCP Check

Paste any remote MCP server URL and find out whether anyone can connect to it. The check runs the real MCP handshake, follows the server's login discovery and tries to register as a brand new app, exactly what Claude does when you add a custom connector. If the server allows it, press Authorize and sign in to prove it with a real login.

Try:

The four answers

Same levels as the evyAI MCP guide.

Open

No login at all. Paste the URL and it works. DeepWiki, Wolfram, Hugging Face.

Self-serve

Sign in with your own account and you are in. Nobody else approves. Otter, Higgsfield, Notion, Linear, Stripe.

Pre-registered only

Login exists, but only apps the vendor already knows (like Claude's directory) get in. Pasting the raw URL elsewhere fails.

Key or gated

Wants an API key in a header, or an admin has to approve first. Gmail on a company Google Workspace, Slack, Salesforce.

Check the whole library

Runs the handshake and login discovery on all 244 servers from the library (no logins, just the probe). Takes a few minutes.