REST API overview

The Fiddle REST API lets you read and write your inventory, orders, and manufacturing data programmatically — useful for custom integrations, internal tooling, and bulk operations.

Base URL and versioning

All endpoints live under a single versioned base URL:

https://fiddle.io/rest/api/v2

Requests and responses use JSON. Send Content-Type: application/json on any request with a body.

Interactive documentation

Two browsable references are generated from the live schema, so they always match the current API:

Reference	URL
Redoc (readable reference)	/rest/api/v2/docs
Swagger UI (try requests live)	/rest/api/v2/docs/swagger

A first request

Every call needs an Authorization header with your API key. This example lists items:

curl https://fiddle.io/rest/api/v2/items \
  -H "Authorization: Bearer YOUR_API_KEY"

The API exposes the same data you see in the app, scoped to your account. Anything you can’t access in the UI, you can’t access through the API.

Next steps

First, get an API key. Then review authentication and rate limits before you build.