I spend a lot of time working with AI coding agents Claude Code, Cline, Cursor, OpenCode. And every time I start a new task in a large repo, I hit the same wall: the agent has no idea what the codebase looks like.
So I built Sentinel.
Point it at any repo. It scans everything locally (no uploads, no API keys, no internet needed) and produces:
Every scan runs entirely on your machine. No code leaves your disk. No API calls. Pure Python stdlib — zero external dependencies.
The AI agent prompt it generates a total of (~2,500 tokens) replaces hours of manually reading files and explaining the codebase to your agent.
bash
pip install git+https://github.com/Ntooxx/Sentinel.git
project-sentinel scan . --fast
🔗 GitHub: https://github.com/Ntooxx/Sentinel
🌐 Dashboard demo: sentinel-nt.netlify.app
📦 197 tests, 0 failures
Let me know what breaks or what's missing. I'm actively improving it.
source & further reading
dev.to — original article
Stop guessing your AI bill: one endpoint for GPT-5.5, Claude & Gemini at a flat per-call price
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