Your first shipment
Get a test key, send one request and print the label it returns.
Ship parcels across Finland with one API call
Send the parcel. Get back the carrier, the tracking number and a printable label, in the same request.
Create a shipment
Every field, where it comes from in your shop, and the rules that keep it valid.
Errors and retries
Every outcome, which ones to retry, and how idempotency keys stop double shipments.
Client code
Copy-ready clients in Python and TypeScript with retries built in.
Interactive reference
Every endpoint and schema, with requests you can send from the browser.
Build with an AI agent
A Claude skill and llms.txt so your coding agent gets the integration right.