You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
SSE servers that retired the legacy transport. Cloudflare's MCP servers (and others moving
off HTTP+SSE) now answer the SSE stream with 410 Gone, which left the server stuck on
"Unreachable · Non-200 status code (410)" and gave no hint about the fix. When an SSE server
refuses the stream (404/405/410), the switchboard now retries Streamable HTTP at the same URL
and switches the server to HTTP once that connects. OAuth servers go to Needs auth as usual.
If HTTP fails too, the error says to change the transport and URL (usually /sse → /mcp).