API

Server-to-server REST API for payment intents, custodial transfers, and related operations. Behind an X-STUDIO-API-KEY header. For comprehensive partner-facing API capability listing, see Enterprise Capabilities › Reference › API Surface.

• Quick Start — setup, authentication, and your first call
• Payment Intents — the payment lifecycle: create, fetch, callback contract, status machine
• Server Integration Example — Express backend walking through end-to-end intent acceptance
• Direct API Integration — patterns for server-side or non-React stacks