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Documentation Index

Fetch the complete documentation index at: https://developer.quickei.io/llms.txt

Use this file to discover all available pages before exploring further.

The Quickei Developer API gives you everything you need to accept payments, manage transactions, and build financial products — all through a single, unified REST API.

Payment Gateway

Accept online payments with a simple API call. Support for multiple currencies and payment methods.

POS Payments

Generate dynamic QR codes and payment pages for in-store transactions from any terminal.

Webhooks

Get real-time notifications for every payment event. Never miss a transaction update.

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Quick Start

Get up and running in 3 steps:
1

Get your API keys

Log in to your Merchant Dashboard and navigate to Developer API > API Keys to get your client_id and secret_id.
2

Authenticate

Call the Access Token endpoint to get a bearer token.
curl -X POST https://quickei.io/pay/sandbox/api/v1/authentication/token \
  -H "Content-Type: application/json" \
  -d '{"client_id": "YOUR_CLIENT_ID", "secret_id": "YOUR_SECRET_ID"}'
3

Create your first payment

Use the token to initiate a payment and redirect your customer to the payment URL.

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Two APIs, One Platform

Payment Gateway API

For online payments — e-commerce, SaaS, marketplaces. Token-based authentication with Bearer tokens.

POS API

For in-store payments — terminals, kiosks, ERP integrations. HTTP Basic authentication with QR codes and payment pages.

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Features

FeatureDescription
Multi-currencyAccept payments in any currency configured in your merchant wallets
Sandbox modeTest your integration with full sandbox environment before going live
IdempotencyPrevent duplicate transactions with idempotency keys
Webhook signaturesHMAC-SHA256 signed webhooks for secure event delivery
Real-time statusPoll payment status or receive instant webhook notifications
Sandbox vs Production — All examples in this documentation use the sandbox environment. When you’re ready to go live, simply change the base URL from /sandbox/ to the production endpoint. See Base URL.