FastJet | Payment Service Provider

1.0.0

Introduction

Welcome to the official FastJet API documentation — your guide to seamless integration of our powerful payment solutions.

This document is created for developers and product managers seeking to simplify transaction handling, enhance user experience, and ensure robust payment security.

Here you will find detailed instructions for configuring and using FastJet's API, including everything from the initial setup to advanced functionality such as automated fund routing and service integrations.

Our goal is to enable your business to handle payments with ease, speed, and confidence, so you can focus on growth.

Host-to-Host (H2H) Mode

Host-to-Host (H2H) mode allows you to transmit and process card data directly between your backend and FastJet API, bypassing any widgets or browser-based payment forms.

• H2H mode is enabled by including the parameter "host2host": true in the payment creation request body.
• Your backend collects, validates, and submits the card data securely over a protected channel.
• In the API response, the url field will be null, and card details will be returned in the info object.

Example H2H payment request:

{
  "payment_type": "pay_in",
  "cur": "RUB",
  "subtype": "bank_card",
  "amount": "1000.00",
  "mode": "P2P",
  "bank_name": "Other",
  "merchant_id": "YourID12232427",
  "user_id": "Tester",
  "host2host": true,
  "callback": "https://my-shop.com/api",
  "redirect_url": "https://my-shop.com/my-shop"
}

Example response:

{
  "uid": "01981932-6f1f-7f64-bcb1-6da501f4717a",
  "url": null,
  "merchant_id": "YourID12232427",
  "state": "idle",
  "client_amount": null,
  "fail_by": null,
  "amount": "1000.00",
  "currency": "RUB",
  "created_date": "2025-07-17T16:23:12.419Z",
  "paid_at": null,
  "info": {
    "type": "card",
    "card_number": "7466****74775"
  }
}

For any questions or additional support, our team is here to help.

This is version 1.0.0 of this API documentation. Last update on Sep 22, 2025.