DEVELOPER WORKFLOWS

Build financial product integrations with Dutch API

Developers can use the dashboard to copy their Business ID, create projects with independent API keys, inspect API activity and add a webhook address. A product server can then run collections, payouts and currency conversion, while the customer-facing app never sees a project key.

Keep each project API key on a trusted server, verify signed webhooks, send an Idempotency-Key with every payment so a retry never pays twice, and check the final status. There is no test mode, so start with a safe ping before enabling money movement. The developer docs have a five-minute quickstart.