How to use this pageKeep this open when you are wiring the flow into a backend. It is a quick map of what exists and which step comes next.
Why the catalog matters
Use the catalog response to confirm the provider list, request hints, webhook headers, and quickstart notes. For sell orders, resolve the bank account first when you do not already have a confirmedaccountName.
If you want to show a provider-specific list of accepted bank codes in your UI, call /api/developer/provider-bank-list/:provider first and use the returned bankCode values in order creation.