Devtu Fix Tool

This is a systematic debugger for ToolUniverse framework tools that fail tests or throw errors. It walks through verification, diagnosis, and fixes for common patterns like JSON parsing errors on binary responses, schema mismatches when the data wrapper is missing, and nullable field validation failures. The approach is opinionated about root cause fixes over workarounds, like validating parameters upfront instead of adding helpful error messages after the fact. It includes a lookup table showing exactly which files to edit for each issue type and emphasizes verifying bugs via CLI before fixing them, since many agent reported bugs are false positives from MCP interface confusion. Useful when dealing with schema validation hell or flaky API integrations in the ToolUniverse ecosystem.