What it is
Canny is a warden for AI coding agents. It hooks into Claude Code and Codex CLI, keeps an append-only ledger of what the agent actually did, and refuses to let the agent finish on an unsupported claim.
How it uses Jev
Jev answers two Noul yes/no questions: whether an edit breaks a rule in CLAUDE.md or AGENTS.md (a note only), and whether the agent's final message claims the work is done. The second can only relax the done-gate, never tighten it.
Primitives:noul
Technique worth stealing
Cache Jev answers by content hash and act only outside a wide confidence band, so verdicts stay stable despite model drift.
Evidence
Each line is one question put to Jev about the README. ≥ 0.60 reads as yes, ≤ 0.40 as no; in between Jev is not making a call.
- Jev-centricno0.35
- Shows a System One patternno0.31
- Handles uncertaintyno0.05
- Measuredno0.05
- Runnableyes0.96
- Worth recommendingno0.18
- Model replicano0.08
- Problem scopescore on a 0–2 scale1.38
- About Jevyes0.86
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 21 Sept 2026.