GCash

GCash Mini Program Open API

Merchant-facing payment API for GCash mini programs — cashier payment, payment inquiry, refund and refund inquiry, plus OAuth2 user authorization (authCode -> applyToken). Signed requests (Client-Id + Request-Time + Signature), idempotent on paymentRequestId/refundRequestId, with async notification callbacks.

GitHub

Documentation

📖
Documentation
https://miniprogram.gcash.com/docs/miniprogram_gcash/mpdev/openapi_overview
📖
APIReference
https://miniprogram.gcash.com/docs/miniprogram_gcash/mpdev/api_api-reference
📖
GettingStarted
https://miniprogram.gcash.com/docs/miniprogram_gcash/mpdev/developer-guide

Other Resources

🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/gcash/refs/heads/main/apis.yml

API entry from apis.yml

apis.yml Raw ↑ 
name: GCash Mini Program Open API
description: Merchant-facing payment API for GCash mini programs — cashier payment, payment inquiry, refund
  and refund inquiry, plus OAuth2 user authorization (authCode -> applyToken). Signed requests (Client-Id
  + Request-Time + Signature), idempotent on paymentRequestId/refundRequestId, with async notification
  callbacks.
humanURL: https://miniprogram.gcash.com/docs/miniprogram_gcash/mpdev/openapi_overview
baseURL: https://apiportal.gcash.com
x-baseURL-note: Production access is provisioned through the GCash API Portal (apiportal.gcash.com); the
  mini-program Open API gateway host is issued to approved partners and not published publicly.
tags:
- Payments
- Mini Program
- Refunds
properties:
- type: Documentation
  url: https://miniprogram.gcash.com/docs/miniprogram_gcash/mpdev/openapi_overview
- type: APIReference
  url: https://miniprogram.gcash.com/docs/miniprogram_gcash/mpdev/api_api-reference
- type: GettingStarted
  url: https://miniprogram.gcash.com/docs/miniprogram_gcash/mpdev/developer-guide