Merchant Pain Prevention

Every 1-star review on the Shopify App Store is a merchant who trusted you and felt betrayed. This skill is the inverse of that experience — a hard-coded inventory of the patterns that cause the betrayal, with the structural fixes.

The merchant pain ecosystem is small and loud. Stores talk. Subreddits index. Community threads outrank the App Store on Google for the phrase "billed for uninstalled app" — there are at least eight active threads on that exact phrase. If you ship a billable app and get one of those patterns wrong, you will not just lose that merchant; you will repel the next 50 who Google your name.

This is not a style guide. It is a survival document. Follow it.

1. When to use

Invoke this skill whenever you are: