Canary Watch

This is post-deploy verification that actually runs checks instead of just hoping your release didn't break anything. Point it at a URL after you ship and it monitors HTTP status, console errors, network failures, Core Web Vitals, and whether critical page elements are still there. You can run it once as a quick smoke test or set it to watch continuously during a launch window. It diffs against a baseline so you catch regressions like LCP jumping 500ms or new console errors that weren't there before. The SSE stream monitoring is a nice touch since most tools ignore event-stream endpoints entirely. Pairs well with CI pipelines or just run it manually when you merge something scary.

Install to Claude Code

npx -y skills add affaan-m/ecc --skill canary-watch --agent claude-code