Rank, 14 days: 5 on the Cursor sheet
2 people reported
All time, since Nov 8.
SDK MCP discovery fails
“This MCP server failed during live tool discovery. Its tools are unavailable until the connection is fixed.”
Is this your bug? What gets counted gets fixed. Pile on.
Paste this into your agent. It files your report, with your error and version.
I hit this bug: rapsheet.dev/sheets/cursor/issues/27060/file Follow it to file my report. Show me the text before you send.
No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends
MCP servers fail tool discovery in local Cursor SDK runtime. Namespaces return namespaceStatus: error and expose only mcp_auth, though the same servers are authenticated and work in the desktop app or Agent CLI.
Is this your bug?
File my report- Where
- Cursor SDK
- Error text
This MCP server failed during live tool discovery. Its tools are unavailable until the connection is fixed.- Versions
- 3.29.9 to 3.29.14
- Platforms
- macOS
- How bad
- Breaks a normal workflow.