# Canary (YC W26) > Analysis by Optimly for Optimly AI Visibility, in the Optimly AI Brand Index. Last analyzed September 15, 2026. > Canary is an adversarial AI agent testing platform that uses an army of adversarial agents to hunt, break, simulate, and verify AI agents and applications across every surface and environment, acting as an adversarial quality gate for coding agents. It aims to catch failures before human review, on every pull request, and within the agent's workflow. - Business Profile: https://optimly.ai/brand/canary-yc-w26 - Publisher: Optimly (https://optimly.ai) - Dataset: Optimly AI Brand Index (https://optimly.ai/brand) - Official website: https://runcanary.ai/ - Logo: https://logo.clearbit.com/runcanary.ai - Slug: canary-yc-w26 - Brand Authority Index tier: Emerging - Category: AI Application Security Platforms - Last Analyzed: September 15, 2026