Live-checked MCP servers
Live check: results across all servers
Totals from this directory's live check of every remote MCP endpoint in the registry that could be requested.
Questions and answers
- How many remote MCP servers actually answer?
- On 2026-10-05, 9,860 of 16,682 remote MCP servers checked here answered the MCP handshake, 4,996 required sign-in, 52 opened a legacy SSE stream and 1,774 did not answer as MCP servers. How the live check works →
- How many MCP servers require sign-in?
- On 2026-10-05, 4,996 of 16,682 remote servers answered the first request with HTTP 401 or 403; 3,930 of them pointed to OAuth authorization metadata, as the MCP authorization specification describes. OAuth for MCP →
- What does this directory's live check test?
- It sends each remote endpoint an MCP initialize request and, if that succeeds, asks for the list of tools, recording only the tool names and count. It doesn't run tools, sign in or test security. How the live check works →
- Does a passing live check mean an MCP server is safe?
- No: it only shows that the endpoint answered the MCP handshake and listed tools on that date. What the tools do, what data they reach and who runs the server are for you to check before connecting. Before you connect →
- Why do some remote MCP servers fail the live check?
- Of the 1,774 that did not answer as MCP servers on 2026-10-05, the reasons were: HTTP 4xx error (786), could not connect (491), HTTP 5xx error (243), no answer within 15 seconds (181) and answered, but not as an MCP server (41). How the live check works →
- Which MCP protocol versions do servers answer with?
- Of the 9,860 servers that answered on 2026-10-05 (the check asked for 2025-06-18), 8,942 answered 2025-06-18, 385 answered 2025-03-26, 383 answered 2024-11-05 and 123 answered 2025-11-25. MCP transports →
- How many tools does a remote MCP server offer?
- Half of the 9,756 servers whose tool list was read on 2026-10-05 listed 7 tools or fewer; 3 listed none and the largest listed 1,068 (lists were read up to five pages). Tool →
Sources: Official MCP Registry (read 2026-10-04); this directory's live check of remote endpoints (2026-10-05). All questions · Live check by server: A-C · Live check by server: C-F · Live check by server: F-J · Live check by server: K-P · Live check by server: P-S · Live check by server: S-Z