Start here
Everything the dashboard does in the collection operation exists in the API v1: customers, charges, collection rules, agreements, disputes, tasks, imports, webhooks. This section covers the practical path; the full contracts are in the API Reference, generated from the OpenAPI spec (never hand-written).
Practical examples
The essential flow of an integration, end to end, in curl
Errors and codes
Every API v1 error comes back in the same envelope:
Postman and SDKs
You do not need to build requests from scratch: the Postman collection and the OpenAPI spec are generated from the same source as the API Reference and always stay in sync with it.