Integrate Payment Gateway

Use this skill when a task requires connecting an application to a payment provider's API, including initial setup, webhook handling, refund flows, and PCI-DSS-compliant implementation.

When to Use

• adding/replacing a payment provider
• auditing checkout, refund, or webhook flow
• Stripe, VNPay, PayPal, Momo, etc.
• payment integration in e-commerce
• MPP/x402 programmatic agent payments
• BNPL messaging integration
• A2A Pay by Bank settlement flows

Core Rules