# Someone

- **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:** [Muhammad Umer Aamir](https://cerebralvalley.ai/u/umeraamir69)
- **GitHub:** https://github.com/umeraamir69/meta-hackathon-2026
- **Demo video:** https://www.loom.com/share/568f5bb5a2d04286b8c8a803de925843
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1032

PR Diff Sentinel is a merge gate for secrets that survive a delete — a problem that got worse with vibe coding.

People remove a key from a file, open a PR, and assume they’re safe. Diff-only scanners miss git history; CI goes green; the merge still ships the leak.

Rules decide Pass/Fail over the working tree, the PR diff, and the commits behind it. The gate stays red until a human rotates the credential.

Meta models (required):
• Muse Spark labels each masked hit (likely live vs docs sample / fixture).
• Muse Wonder writes rotate steps, blast radius, and triage — and powers live report chat.
• Muse explains only. Muse cannot clear a Fail.

Built during the hackathon: hosted scanner + Testing demos + full Muse report (PDF, chat), Chrome extension (PR/commit scan, repo picker, local dashboard), CLI + pre-commit/pre-push hooks + GitHub Action, and AI-authorship advisories that never block the secrets gate.

Not an AI code reviewer. Rules block. Muse explains. Secrets stay masked.

## More from Meta Global AI Developer Hackathon

- [MedAxis AI](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1029)
- [sajjadbdai](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1030)
- [SyntaxBuilder](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1031)
- [Andre Tsernikov](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1033)
- [Hoolala!](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1034)
- [Haspro Digital Creative](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1035)

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