Overview
Issue cards, verify customers, take deposits and exchange currencies through one API.
The UPP API is a REST API under /api/v1. Requests and responses are JSON, and every request is authenticated with your merchant API key and HMAC-SHA256 request signature.
Quickstart
Get a sandbox API key and make your first request.
Errors and limits
Error format, error codes, rate limits and pagination.
Webhooks
Receive status changes and verify signatures.
API reference
Every endpoint and webhook event, with Try it against the sandbox.
Environments
| Environment | Use | Money |
|---|---|---|
| Sandbox | Integration and testing. Providers are simulated. | Not real |
| Production | Live traffic. | Real |
Sandbox and production are separate: accounts, API keys, webhook endpoints and data do not carry over. Create your API key in the merchant dashboard of the environment you call.