Welcome to the API reference for API.1. Here you will find all the information you need to be able to consume API.1 endpoints and start inviting your customers to connect their ERP systems.


You must first authenticate in order to acquire an Authentication - Access Token. This is the key that is needed to call all of the other API endpoints in API.1.


We currently offer two APIs for you to consume:

Client API

Use this to create Consent, and then use the created Consent ID to invite your Customer to onboard through the Onboarding UI.

Accounting API

Use this to access data from your customers' ERP System with the Consent ID, once your Customer has onboarded and created a Connection to their ERP System.

Supported Systems

List InvoicesGet an InvoiceList Invoice AttachmentsGet an Invoice AttachmentCreate a JournalCreate a Payment
Visma eAccountingoo
Björn Lundéno
XML - Peppol
XML -Svefaktura
XML -Finvoice
PDF Invoice

- developed

o - under development

- will not develop (not supported by system)