About the Unzer API
The Unzer API connects your business to the Unzer payment infrastructure.
REST architecture
The Unzer API is based on the representational state transfer (REST) architectural style.
HTTP requests
You can make requests to the Unzer API resources with standard HTTP methods.
JSON payloads
The Unzer API sends a response with a JSON payload that contains detailed information about the requested resource.
HTTP basic authentication
The Unzer API uses HTTP basic authentication (BA) over HTTPS, with your API key serving as a username.
Read more about authentication
UTF-8 encoding
The Unzer API supports only UTF-8 characters.
Sandbox environment
Use our sandbox environment to safely test your interaction with the Unzer API.
Requests made with your sandbox API keys never affect real payment networks and are never billed by Unzer.
Error codes
The Unzer API errors are indicated by HTTP response codes.
Read more about error handling
Integration options
To let you quickly implement a variety of payment stolutions into your system, we offer a whole range of integration solutions and materials:
Base URL
The main URL for the Unzer API is:
https://api.unzer.com/v1/
API versioning
The current version of the Unzer API is:
- 1.0
https://api.unzer.com/v<VERSION_NUMBER>/<path-to-resource>
When we release a new API version with backward-incompatible changes, we keep the previous API versions still available.