from gstack (Korean docs)43
Post-deploy canary monitor that watches production pages for console errors, performance regressions, and page failures; captures screenshots and compares them
Canary runs post-deploy monitoring against a production URL, taking periodic screenshots, checking console errors, and measuring performance. It compares each check against a baseline or pre-deploy snapshot and alerts on regressions (new console errors, load-time regressions, page failures). It saves structured reports and artifacts for review.
Use this skill immediately after deploying changes to production to detect regressions in the first minutes after rollout. Invoke manually with '/canary <url>' or use '--baseline' before a deploy to capture a reference. It's intended for release verification and short-term monitoring (1–30 minutes).
Designed for Claude Code environments with a browse daemon accessible to run page navigation and snapshot commands; also assumes standard Unix tooling for file operations and optionally gh/telemetry hooks.
This skill has not been reviewed by our automated audit pipeline yet.
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