# RaceLab

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Vu Tang](https://cerebralvalley.ai/u/tang-vu)
- **GitHub:** https://github.com/tang-vu/racelab
- **Demo video:** https://youtu.be/cBR_6Pzx0W4
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/909

RaceLab - AI proposes the repair. Execution checks the fix.

Try the live MVP: https://racelab.tangvu.dev/
No installation, sign-in or visitor API key required.

Background jobs can pass normal tests yet become permanently stuck when a worker crashes after claiming work. An AI-generated patch may look convincing while introducing another failure, such as stealing a live worker's job.

RaceLab makes these repairs testable. Developers paste or import a supported job-claim method, and Muse Spark 1.3 investigates the failure and proposes replacement source. An independent runner executes the candidate against ten real SQLite/process conditions. Developers can inspect original versus repaired code, process and SQL traces, and actual versus expected results.

The demo reproduces a failure in a pinned TypeScript method from the public TEND repository: terminate the worker after its claim commits, restart another process on the same database, and observe the stranded job. A Muse Spark repair passes all ten declared recovery conditions.

The MVP supports new model investigations, browser-saved projects, private run recovery for up to 24 hours, and regression export/import. Reopening a regression executes its checks again instead of trusting saved PASS labels.

I built RaceLab's workbench, execution adapters and repair workflow during the hackathon, reusing transport/accounting infrastructure from my earlier event prototype. TEND is an existing source input. Verification covers the declared methods and finite conditions, not arbitrary repositories or whole-application correctness.

## More from Meta Global AI Developer Hackathon

- [HVAC Destroyer](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/906)
- [Frappua](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/907)
- [Capybala](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/908)
- [Outsiderz](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/910)
- [Hearth_MoveIn](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/911)
- [Pocket Muse](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/912)

---

Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/909. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt