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Developer API & webhooks

Create, quote, and purchase shipping labels programmatically — REST, JSON, one Bearer header, signed webhooks, and idempotency keys.

Type

Platform / developer tools

Style

REST + JSON

Docs

goatlabels.io/docs

Sign up

goatlabels.io/signup

The GoatLabels API

The GoatLabels public API is plain REST and JSON with a single Bearer header — create a shipment with POST /api/v1/shipments, then buy the label with a purchase call against the draft. Label purchases debit the same prepaid wallet the dashboard uses, so there is no separate billing surface to manage.

Webhooks instead of polling

Signed webhooks push tracking and shipment events to your endpoint, and idempotency keys make retries safe — it is built for the 3am cron job. Everything you can do in the dashboard across USPS, UPS, FedEx, DHL, and the international network is reachable from code.

The API is included on both Free and Pro plans — see the API docs for details and current pricing for plan differences. Get an API key.