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Skill

Canary

gstack

Watches a release right after it goes out, comparing the new version's health signals against the old so a bad deploy is caught early and can be rolled back. It monitors AFTER the deploy, unlike preparing the change, performing the deploy, or intercepting risky commands.

Situations it fits

The deploy just finished. You want to keep an eye on whether this version is behaving worse than the last, so you can pull it if something looks off.
Canary. All four live around a release, which is the trap. canary watches a release AFTER it ships, comparing the new version's health to the old and rolling back a bad one. By contrast ship runs the pre-merge pipeline - tests, diff review, version and changelog - and stops at the opened PR; land-and-deploy is the deploy itself - merging the approved change and pushing it live to production; careful guards a single destructive command - a force-push, a recursive delete, a dropped table - by confirming before it runs.
You just deployed a new version and want to watch its error rate and latency against the previous release for the next few minutes, so a bad rollout is caught and reverted before most users hit it.
Canary. All four live around a release, which is the trap. canary watches a release AFTER it ships, comparing the new version's health to the old and rolling back a bad one. By contrast ship runs the pre-merge pipeline - tests, diff review, version and changelog - and stops at the opened PR; land-and-deploy is the deploy itself - merging the approved change and pushing it live to production; careful guards a single destructive command - a force-push, a recursive delete, a dropped table - by confirming before it runs.

3 scenarios in the bank answer to Canary. The rest are in the game.

Skills it gets confused with

These share a family with Canary, which is another way of saying they are the ones you might reach for by mistake.

Knowing what Canary does is the easy half. Telling it apart from the others under time pressure is the game.

Today's session

Canary is part of garrytan/gstack. Licence: MIT. The description above was written for this game, not taken from the skill.