Canary (YC) – Independent verification for AI code
Canary is the independent tester for code your agents write. It runs your app, tries to break every change, and reports what would have reached production. Start with one line in your coding agent.
Canary (YC) – Independent verification for AI code launched on September 24, 2026 with 8 votes, #1,109 of 8,093 launches that month and more than 75% of that year's launches.
What it does
Canary is the independent tester for code your agents write. It runs your app, tries to break every change, and reports what would have reached production. Your agents raise more PRs than your team can review. Review turned into a skim. The tests pass. The same agent wrote them, and nobody on your team reads them. Nor should they. The bug shows up as a Slack message from a customer, or a page that wakes your on-call at 2am. One loop. From your coding agent, and on every pull request. Reviewers read the diff. Canary runs the app, tries to break the diff , and reports the blind spots you missed. Canary reads the diff and your codebase and maps every flow the change can reach. Before your…from runcanary.ai
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