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OneAPI Documentation

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API Reference

Comprehensive documentation of all API endpoints, request parameters, and responses.

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Payment Methods

This section explains usage of different payment methods

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Resources

Useful resources for your integrations.

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Optional Services

Explore additional services available through the gateway.

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Integrations

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Guides

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Latest release notes

Recent API and platform changes from the release notes.

September 8, 2026

v3.21.5

Wero — Capture event on authorization

wero_capture_event is an optional parameter on Wero authorization requests (POST /rest/authorize). One of: SHIPPING, DELIVERY, AVAILABILITY, SERVICE_FULFILMENT, OTHER. When missing, falls back to OTHER. This information is displayed to the end user when making the payment. It is not accepted on payment or other requests. See Authorize API and Wero.

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July 28, 2026

v3.20.37

Jetztzahlen — Invoice activation

Invoices can be activated or deactivated via PUT/PATCH /rest/invoices/:invoice_number using the active flag. Deactivating an invoice stops its payment link and blocks further e-mails. amount and active can only be changed while the invoice is pending and has never had a payment plan attached. Creating or importing an invoice with an existing number in the same channel automatically deactivates the previous active invoice. Number-addressed endpoints always resolve to the active invoice (falling back to the most recently created). An invoice with an active payment plan cannot be deleted until the plan is cancelled. See Jetztzahlen, Update Invoice, and Delete Invoice.

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July 27, 2026

v3.20.36

Merchant Management API — Payment Methods

Partners can now discover and configure payment methods for their sub-merchants via the API. Browse the catalogue of available methods, processors and their field schema with GET /v2/payment-methods, then configure a method for a merchant or an individual shop (list, show, set and remove) via /v2/merchants/{merchant_id}/payment-methods and /v2/merchants/{merchant_id}/shops/{shop_id}/payment-methods. See Merchant Management API.

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July 24, 2026

v3.20.35

Checkout & payment page — Croatian locale

The hosted checkout page and payment forms now support Croatian (hr). See Locales.

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