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Canary

AI writes your code. Canary tests it.

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Canary is an independent testing tool for code produced by AI coding agents. It runs the application, attempts to break changes, and reports issues that could otherwise reach production, addressing the gap where tests written by the same agent may pass while real defects slip through review.

Canary reads diffs and maps reachable flows, then runs the app in a clean sandbox to execute queued tests. It can run before an agent marks a task done via `canary verify`, or on every pull request, producing a report with test replays, root cause analysis, suggested fixes, and regression tests. It integrates with GitHub, Linear, Sentry, Datadog, Notion, and Slack, and works with Claude Code, Cursor, Codex, and other agents through PR, CLI, and MCP interfaces.

Canary is aimed at engineering teams using AI coding agents. It is installed via the Canary CLI (`npm i -g @runcanary/cli`) and onboarded per repository. Pricing details are not specified on the available pages.

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