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CommunityTools & Integrations32 starsVerified 2026-09-22

Canny

A warden for Claude Code and Codex CLI that keeps an append-only ledger of what an agent did, refuses a done claim when no check passed after the last edit, and uses optional Jev Noul judgments.

Open github.comqkal/Canny
Category
Tools & Integrations
Published by
Community
Author
qkal
Added
2026-09-22
Tagscommunitytypescriptclaude-codecodexguardrails

Highlights

  • The rule is facts go to code, judgments go to Jev, and only facts can block; a done claim is refused because the ledger holds no passing check.
  • Hook events land in an append-only ledger under ~/.canny/sessions/ that stores paths and outcomes, never file contents; canny replay reproduces the verdict.
  • Jev judgments are optional: with no key the ledger, done-gate, and pattern checks work the same, and makeJudge can point at CANNY_JEV_URL.
  • The built-in verify list holds about eighty commands (pytest, vitest, jest, go test, cargo test, tsc, eslint, ruff); quoted strings are stripped.
  • The compiled CLI is committed, so install is a git clone plus one init command, and Node 22 or newer is required.

Quickstart

bash
git clone https://github.com/qkal/canny.git ~/.canny/src
node ~/.canny/src/dist/cli.js init
ln -s ~/.canny/src/dist/cli.js ~/.local/bin/canny

Watch out

MIT-licensed but not on npm. Needs Node 22+ and git; enabling Jev sends clipped diffs, project rules, and final messages to TypeSafe, and whether it improves project-wide quality has not been measured.

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