PASAR API

🇻🇳 VNPay ~ card, ATM and QR payment gateway

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Open sandbox docs with self-serve test-merchant registration at sandbox.vnpayment.vn/devreg; auth is TmnCode + HMAC secure-hash on redirect params. Production requires a signed merchant contract. Docs Vietnamese-first. VN-first.

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# VNPay ~ card, ATM and QR payment gateway needs an API key ~ get yours at:
# https://sandbox.vnpayment.vn/apis/
curl 'https://sandbox.vnpayment.vn' \
  -H 'Authorization: Bearer YOUR_TOKEN'

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I'm integrating a Vietnam API into my app.

API: VNPay ~ card, ATM and QR payment gateway
Provider: VNPay
Auth: requires an API key (sign up: https://sandbox.vnpayment.vn/apis/)
Pricing: freemium
Base URL: https://sandbox.vnpayment.vn
Important note: Open sandbox docs with self-serve test-merchant registration at sandbox.vnpayment.vn/devreg; auth is TmnCode + HMAC secure-hash on redirect params. Production requires a signed merchant contract. Docs Vietnamese-first. VN-first.

Source: VNPay (https://sandbox.vnpayment.vn/apis/)
Source type: Provider API or developer docs
Endpoint type: Provider API base URL
Integration difficulty: Needs API key
Last checked: 2026-07-03
Production caveat: Keep credentials server-side and confirm current limits, pricing, and webhook/error behaviour in the provider docs.

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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