Hey, thanks for the report. This is a known issue - MCP tools show green status in the UI but are not accessible to the agent.
The team is working on a fix. Similar cases: MCP servers are not accessible in Cursor Desktop chat despite no visible errors with connection and Agent has trouble detecting available MCP tools
For diagnosing your case, could you provide:
2. @Steve_Wright - can you share the Request ID from the problematic chat? (Chat context menu > Copy Request ID)
3. MCP server logs from the Output panel (View > Output > select your MCP server from the dropdown)
This will help engineers match your cases with the logs.