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Test an MCP server online, free

Paste a remote MCP endpoint URL. We send the MCP initialize handshake, then ask for the tool list, and show what the server reports. We never call any tools.

Public http(s) URLs only. Takes up to 10 seconds. Limit: 5 tests a minute, 30 a day. We don't save your URL or results.

What this test checks

The server is reachable and answers MCP over Streamable HTTP (or the older HTTP+SSE transport).
Its name, version, and protocol version from the handshake.
The tools it offers, with their descriptions and any safety hints.
Whether it needs sign-in (HTTP 401/403) and sends a proper OAuth challenge.

Please note: a pass means the handshake and tool list worked. It doesn't prove the tools themselves work, are safe, or return good results.

New to MCP? Read What is an MCP server?