Canary (YC W26) – AI-powered QA agent that tests user workflows from pull requests
By
Visweshyc
Hand-rolled, kettle-boiled, baked to perfection. Worth every minute at the bakery.
Summary
Canary is an AI-powered QA tool that reads codebases, analyzes pull requests, and automatically generates and executes tests for affected user workflows. Founded by Aakash and Viswesh (who previously built AI coding tools at Windsurf, Cognition, and Google), the tool aims to catch real user-facing bugs before code is merged into production, addressing the gap between fast AI-assisted shipping and inadequate testing of actual user behavior.
Key quotes
· 3 pulledAI tools were making every team faster at shipping, but nobody was testing real user behavior before merge.
PRs got bigger, reviews still happened in file diffs, and changes that looked clean broke checkout, auth, and billing in production.
We build AI agents that read your codebase, figure out what a pull request actually changed, and generate and execute tests for every affected user workflow.
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