Documentation

Integrate payments in an afternoon.

HPG is a REST API for collecting and paying out money in The Gambia. Plain JSON, amounts in minor units, signed webhooks — no SDK required. Build in test mode, go live when you're ready.

Get started Open the API console

Your integration path

01AuthenticateGrab your API key from the dashboard and make your first authenticated request.02Collect a paymentOne POST returns a checkout URL. Test it end-to-end in the sandbox first.03Listen for webhooksVerify the HMAC signature and confirm money movement in real time.

Browse the docs

Authentication

Bearer tokens, key management, and security best practices.

API Reference

Every endpoint — collections, payouts, balance, and client management.

Webhooks

Signed real-time events with automatic redelivery on failure.

API Console

Read the request and webhook contract without needing a key.

Secure by design

All traffic is TLS-encrypted, and every webhook is signed with HMAC-SHA256 so you can verify it came from us — always verify before fulfilling an order.

HMAC-SHA256 payload signing
Bearer token authorization
IP whitelisting
Hosted checkout — card data never touches your servers

// Verify a webhook signature
const expected = crypto
  .createHmac("sha256", secret)
  .update(rawBody)
  .digest("hex");

const valid =
  signature === expected;

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