API reference
Every Flint resource, endpoint by endpoint. 50 resources across 9 groups, all plain HTTP+JSON authenticated with your API key. The same surface is described by the OpenAPI spec.
Resources
50
Endpoints
596
Webhook events
162
Using the API
Developer Setup
Provision a merchant and mint the first Flint API key, with a browser handoff when account verification needs human input.
API Keys
Create and manage Flint Pay API keys for secure server-side authentication.
OpenAPI
Download the Flint Pay OpenAPI spec for code generation, agents, SDKs, and API tooling.
Errors
Every error code with its category, retryability, and fix.
Webhook events
All webhook event types Flint delivers.
CLI commands
Every flint command, its flags, and the route it calls.
Core commerce
Returns
Inventory
Fulfillment
Payments
Subscriptions
Events & logs
Account & platform
Merchants3 endpoints
Flint billing4 endpoints
Organizations9 endpoints
Settings5 endpoints
Analytics3 endpoints
Devices5 endpoints
Sandboxes6 endpoints
Onboarding7 endpoints
Merchant account sessions2 endpoints
Customer sessions4 endpoints
Customer account43 endpoints
Partner apps8 endpoints
Partner OAuth3 endpoints
Users
User records are not exposed on the external merchant API surface.
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