API keys | Northwind

Create a key

In Settings → API and webhooks, click Create API key, name it and copy it. It’s shown once.

Send the key in the Authorization header:

Terminal

curl https://api.northwind.app/v1/invoices \
  -H "Authorization: Bearer nw_live_…"

Create an invoice:

Terminal

curl https://api.northwind.app/v1/invoices \
  -H "Authorization: Bearer nw_live_…" \
  -d customer=cus_83Kd2 \
  -d "items[0][description]=Consulting" \
  -d "items[0][amount]=120000"

Good to know: Amounts are in cents. The API is available on the Business plan.