Skip to main content

Introduction

The following methods are used to empower your service with Changelly exchange features. You can request more features by contacting our development team. Changelly API is a white-label exchange solution.

Changelly API v2 is a faster, safer and more flexible version of our API.

info

Rates and limits received from the API v2 estimation methods are compatible only with API v2 and with such methods as createTransaction and createFixTransaction. You can't use the rate received by one version of API to create a transaction with another one.

How to get started​

Before start, follow these steps:

  1. Read the following documentation
  2. Generate API keys
  3. Register on the Changelly website if you don't have an account yet
  4. Contact us at [email protected] to register your:
  • E-mail address connected to your account
  • Public API key
  • Public API key Base64

If you have any questions, please write us at [email protected].

info
  • For the currencies with multiple outputs in a transaction (BTC, LTC, etc), we do not accept more than one output per address in one transaction.
  • You should integrate our API on the backend side. If you try to handle that on the frontend side, your API key will be accessible to all users.
  • It is not necessary to use Node.js for your backend. Any other server language is suitable.

Your API Extra Fee​

After setting up an API key, you may want to set up your API extra fee. For example, you may choose to charge a 0.5% fee on top of Changelly exchange fee.
To set up an extra commission, please email us with a link to your service. The getTransactions response includes your API extra commission in percent.