HOPPA API Reference

The HOPPA API is a REST API for embedded finance: create users, issue and manage cards, open accounts and wallets, exchange currencies, and move money. Authenticate every request with an x-api-key header. The interactive reference below is generated live from the OpenAPI 3.0 specification (JSON), so it always matches the current API. New to HOPPA? Start with the Quickstart — a user, a card, a top-up, and your first transaction in four calls.

Endpoints by resource

402 endpoints across 26 resources — each with its own reference page.

AdminVouchers

Banking

Cards

Card management operations

Loyalty Program

Transfers

Transfer operations between accounts and external services

Users

User management operations including creation, updates, and KYC

Webhooks

Outbound webhook requests sent by CryptoCard Platform to configured partner webhook URLs.