Shopify Payments Apps

If you're building a custom payment provider integration for Shopify, this skill walks you through the Payments Apps API using GraphQL. It forces a disciplined workflow: search the docs first, write your mutation or query, then validate before you ship. The prompts are tuned for the full payment lifecycle, from sessions and authorization through capture, refunds, and voids. It knows about 3D Secure, PCI compliance, and webhook flows. The mandatory validation step catches bad field names and invalid values before you waste time debugging against a live endpoint. Useful if you're standing up a gateway integration and want guardrails around Shopify's specific GraphQL schema.