Google for Startups AI Agent Challenge

Catch bugs before
they ship.

Sentinel reviews your git diff against rules you write in plain English — and blocks the commit before the bug reaches your users.

Get early access View on GitHub
Real production bugs this caught
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Dead API links— Backend removed, 10+ client references left. Every page showed $0.
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Symbol format mismatch— One missing helper call. Crypto prices broke for every user.
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Mismatched data sources— Tile and drawer fetched from different APIs. Same feature, different data.
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Missing filter param— Every stock showed the same research feed regardless of asset.
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Unfiltered movers— No marketCap filter. Page surfaced penny stocks instead of NVDA, AAPL, TSLA.
How it works
An agent, not a linter.
It reads the diff, picks tools, investigates, and reasons — before your commit lands.
git commit -m "fix movers sort"
Sentinel running... → list_changed_files ← TopMoversWidget.tsx → get_diff ← symbol.replace('-USD', '') → search_codebase ← toSymbol() found in lib/api/market-data.ts 🔴 BLOCKER TopMoversWidget.tsx:52 Manual .replace('-USD','') detected. Use toSymbol() to avoid $0 price bugs. BLOCKERS: 1 — commit rejected.
3 / 3
historical production bugs caught on eval
[PASS] penny-stocks-in-movers    matched: unfiltered-market-data, manual-symbol-conversion
[PASS] research-tile-global-feed matched: incomplete-api-params, tile-drawer-data-source
[PASS] legacy-provider-dead-refs matched: dead-endpoint-references
Built on
Open engine. Any domain.
Write rules in plain English. Swap the YAML pack and you change the domain — fintech, healthcare, e-commerce, whatever you ship.
Google ADK 1.31.1 Gemini 2.5 Flash Vertex AI MCP Fintech (demo pack) Healthcare (coming) E-commerce (coming)
Early access & feedback
Leave feedback or ask to try Sentinel.
Opens a new GitHub issue with a short template — works as soon as this repo’s Pages setting is turned on (see README).
Get early access / leave feedback → Repository

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