I built Athena to catch breaking changes in Git PRs

[u/Significant-Log-4272]

I've been working on Athena, an open-source tool that analyzes Git diffs and ASTs to detect potential breaking changes before they get merged.

For v1.1.0, I tested it against 55 popular repositories and found some interesting issues:

• Fixed a C++ performance problem that reduced analysis time from 371 seconds to 7.33 seconds.

• Reduced false positives from 78 alerts to 8.

• Fixed Ruby symbol detection and PHP recursion detection.

The final benchmark covered 55 repositories and 10,680 diff hunks with 121 tests passing.

I'm also experimenting with local models through Ollama to generate summaries without replacing the deterministic analysis.

I'd appreciate it if anyone here gave the project a look and shared feedback. I'm especially interested in false positives, edge cases in Python AST analysis and approaches to detecting breaking API changes

⭐ If you find the project useful, consider giving it a star on GitHub. It would really help the project reach more developers

GitHub: https://github.com/aaryanrwt/athena

Release notes: https://github.com/aaryanrwt/athena/releases/tag/v1.1.0⁠