Paste an MCP server URL and gate connects, runs the handshake, and lists every tool — a hosted MCP tester, no npm and no local setup. It also grades the server A–F for security while it’s connected.
Your server's remote Streamable-HTTP endpoint (often ends in /mcp).
gate runs initialize and tools/list, exactly like a real client — surfacing any -32000 / -32001 error.
Every tool listed, plus an A–F security grade for prompt injection, hidden instructions, and over-broad permissions.
Public, no-auth servers can be tested here directly. OAuth-only servers need credentials — connect those inside gate to test and monitor them.