PASAR API

🇨🇳 WeChat Pay ~ merchant payment APIs (v3)

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APIv3 uses certificate-based signing and AES-256-GCM for callbacks; merchant onboarding required.

View docs ↗ More Payments APIs

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# WeChat Pay ~ merchant payment APIs (v3) needs an API key ~ get yours at:
# https://pay.weixin.qq.com/doc/global/v3/en
curl 'https://api.mch.weixin.qq.com' \
  -H 'Authorization: Bearer YOUR_TOKEN'

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I'm integrating a China API into my app.

API: WeChat Pay ~ merchant payment APIs (v3)
Provider: Tencent (WeChat Pay)
Auth: requires an API key (sign up: https://pay.weixin.qq.com/doc/global/v3/en)
Pricing: free
Base URL: https://api.mch.weixin.qq.com
Important note: APIv3 uses certificate-based signing and AES-256-GCM for callbacks; merchant onboarding required.

Source: Tencent (WeChat Pay) (https://pay.weixin.qq.com/doc/global/v3/en)
Source type: Provider API or developer docs
Endpoint type: Provider API base URL
Integration difficulty: Regulated setup
Last checked: 2026-07-05
Production caveat: Onboarding, approvals, sandbox/preprod, or compliance steps may be required before production.

Help me set up the correct onboarding/authentication path and make the first valid request ~ explain exactly where credentials go and what must happen before production.

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