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npm install -g @uehaj/sys1grep
npx @uehaj/sys1grep -n -e "customer is angry or frustrated" tickets.txtTaken from the project's README on GitHub. Check the security audit before running it.
None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →
The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.
| Stars | 150 |
| Forks | 10 |
| Language | JavaScript |
| Category | AI Tool |
| Quality Score | 56/100 |
| Open Issues | 30 |
| Last Updated | 2026-10-21 |
| Created | 2026-09-19 |
| Platforms | node |
| Est. Tokens | ~25k |
sys1grep — System 1 for your files; uses TypeSafe AI's Jev 日本語版はこちら Background and design notes (Japanese): Jevのキラーアプリ、「意味で探す grep」を作った on Zenn. Renamed from semgrep (0.5.0). The name collided with the static-analysis tool Semgrep, so from 0.5.0 this is sys1grep (System 1 + grep): npm package (was ), commands / , environment , config .
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Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.
The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.
Sources & who's responsible: