Scan of 30,516 remote MCP servers finds 10.9% broken

What the research found

A one-time scan of all 30,516 remote MCP registry endpoints found 51.4% healthy without credentials, 31.2% up but key-gated, and 10.9% broken, with stale listings failing far more often.

Claims and how well the evidence supports them

1. 51.4% of 30,516 remote MCP registry endpoints answered the handshake and tool list without credentials 99%
2. 31.2% of endpoints were up but required a key 99%
3. Listings last updated April 2026 or earlier are broken 40% of the time versus 4% for October updates 98%
4. All 190 server.smithery.ai URLs in the registry return 404 98%

Evidence

• mcpcanary.com https://mcpcanary.com/blog/state-of-mcp-reliability-q4-2026

Actionability rated high.