One strict API. Typed packages for every surface.

A contract you can rely on

Throttle is API-first: everything the dashboard does, your code can do.

• One shape. Requests and responses are camelCase, everywhere. A retired or misspelled field is rejected with an error that names the field and its replacement — never silently ignored.
• OpenAPI 3.1 is the source of truth. The live spec is published, and the TypeScript client is generated from it, so the docs, the types, and the server can’t disagree.
• Predictable responses. A consistent envelope with a request id on every response, stable error codes, and cursor pagination on every list.

Safe to retry

Send an Idempotency-Key with any write and a retry within 24 hours replays the original response instead of creating a second order or a second charge. Reusing a key with a different body is refused, so a bug can’t hide behind a replay.

Packages for every surface

Package	For
@usethrottle/api-client	The full typed API, server-side
@usethrottle/checkout-react · checkout-sdk	Embedded checkout and secure card fields
@usethrottle/cart	Carts and browser-safe cart sessions
@usethrottle/auth	Storefront customer accounts, with drop-in UI
@usethrottle/subscriptions · invoices · payment-methods · quotes	Buyer portals and B2B flows
@usethrottle/discounts · scripts · errors	Promotion codes, sandboxed scripts, one error type
@usethrottle/webhook-types · extension-bridge	Typed events and extension tooling

A CLI for the terminal

@usethrottle/cli manages orders, payments, customers, subscriptions, discounts, fulfillments, returns, events, webhooks, and extensions from the command line, with saved profiles for each environment.

Machine-readable everything

The scope catalog and event catalog are API endpoints too, and an AI assistant can read the docs, describe an endpoint, and validate a payload before you send it.

Good to know

• The SDKs are JavaScript and TypeScript; other languages use the REST API and OpenAPI spec directly.