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Stop vibe-debugging.
Plug Claude into your app's actual errors.
AppSignal's MCP server hands Claude, Cursor, or Zed your real errors, traces, and the deploy that shipped them. AI writes the fix; you review the diff.
xUnit is a XP style unit testing framework. xUnit uses a protocol between a front-end to display test results and a test driver linked into applications - removing the link time dependencies between the application and the graphics, formatting libraries.