MCP Server not connecting via Github Actions (was previously working)

[adamduren]

This was working for months and stopped working 5 days ago. I have tried multiple authentication methods, downgrading the version of claude code, and more to no success.

Environment

latest (0.31.0) also not working on previous versions

Steps to Reproduce

1. Setup a Github Action using Claude Code and Sentry MCP stdio (personal access token or device-code)
2. Testing with npx @sentry/mcp-server auth status shows as logged in
3. Claude code shows the mcp server status as pending and after several attempts it never connects

Expected Result

The mcp server tools are available

Actual Result

The mcp server tools are not available.

[dcramer]

Taking a look! If you get a chance can you run with --debug (on claude code) and see if it throws any useful information at you?

[dcramer]

So far my test harnesses aren't finding an issue, and I'm not a big fan of manual QA so working on getting some more semi-automated configs setup that can verify things are working correctly in both Codex and Claude Code (CLIs).

[dcramer]

Did downgrading the version of the sentry mcp client help?