A comprehensive integration guide for WeChat Pay Score, the credit-based payment system that powers rent-without-deposit and pay-after-use flows in WeChat. Covers the full lifecycle from order creation through completion, deductions, and refunds. What makes this useful is the structured approach: it won't let you skip ahead without confirming merchant vs service provider mode first, then walks you through API examples in Java and Go, business rule lookups (order states, risk_fund formulas, signature verification), quality checks before you go live, and a troubleshooting manual for the top 20 error codes. If you're building anything involving delayed payment or credit scoring in the WeChat ecosystem, this handles the tedious parts of getting the integration right.
npx skills add https://github.com/wechatpay-apiv3/wechatpay-skills --skill wechatpay-payscore