Canary
Independent verification for AI code
Last verified:
What is Canary?
Canary is an independent AI-powered testing tool for code written by coding agents like Claude Code, Cursor, and Codex. It runs the app in a clean sandbox, tries to break every change, and reports bugs before they reach production. It's aimed at engineering teams overwhelmed by agent-generated pull requests.
Canary pricing
Pricing model: Freemium
Canary pros
- Works with popular coding agents (Claude Code, Cursor, Codex) via PR, CLI, and MCP
- Runs the app in a clean sandbox before commit, catching failures pre-PR
- Maps every reachable flow from a diff to generate targeted tests
- Integrates with GitHub, Linear, Sentry, Datadog, Notion, and Slack; files breaks back to the agent for fixing
Canary cons
- No pricing information is visible on the page
- Claims like bug counts and fix rates appear as placeholder-style stats (0K+, 0%)
- Setup requires pasting prompts and connecting your stack, which may add friction
Frequently asked questions about Canary
How do I get started with Canary?
Install the Canary CLI with `npm i -g @runcanary/cli`, then run `canary skills` and follow its instructions to onboard your repository.
Which coding agents does Canary support?
It works with Claude Code, Cursor, Codex and other agents, via PR, CLI, and MCP integration.
When does Canary run tests?
Two triggers: inside your agent before it calls a task done (snapshotting the uncommitted tree in a sandbox), and on every pull request.