WeChat Pay Integration
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About this skill
What It Solves
WeChat Pay integrations often break down at product selection: in-WeChat web pages, Mini Programs, native apps, mobile H5, merchant QR codes, user payment codes, and face-payment devices each use different APIs and parameters. It is easy to confuse JSAPI, Native, H5, and payment-code flows. This skill is for WeChat merchant acquiring integrations. It turns vague “add WeChat Pay” requests into actionable routing: identify the channel, recommend the product, and point to the required parameters and official documentation.
Core Capabilities and Steps
- Scenario routing: maps keywords such as
Mini Program payment,APP payment,H5 payment,Native payment, andpayment-code paymentto the corresponding product docs. - Onboarding prep: flags the need to register a merchant account and lists required fields like
appid,mch_id,api_key, merchant private key, and merchant certificate. - Documentation navigation: links to the merchant documentation center, product docs, API list, developer tools, and developer community, so engineers can verify the latest version before coding.
- Boundary detection: notes that Alipay, UnionPay, WeChat transfer, reconciliation, and red packets are out of scope for acquiring payment integration.
Where It Fits
This skill is suitable for WeChat merchant platform acquiring scenarios, especially product selection and documentation navigation. It does not cover merchant splitting, transfers to change, or red packets. Before production development, follow the current WeChat Pay online docs and validate signing, certificates, and callbacks in a sandbox first.
Use Cases
- Choose JSAPI payment and verify required parameters when checking out in a WeChat web page.
- Add payment to a WeChat Mini Program and confirm the Mini Program payment appid and merchant parameters.
- Distinguish payment-code payment from Native payment when using a scanner to accept user payment codes.
- Diagnose a mobile H5 checkout failure and decide whether to use H5 or Native payment.
Best For
- Backend engineers owning Mini Program checkout flows who need to confirm Mini Program payment APIs and merchant parameters.
- Payment engineers integrating online stores who need to choose JSAPI, H5, or Native payment by channel.
- Client engineers building offline POS flows who need to distinguish payment-code payment from merchant QR payment.
- Product engineers maintaining in-WeChat web orders who need to verify JSAPI docs and required parameters.
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