Fortnox Suppliers API
Supplier register.
Fortnox Suppliers API is one of 12 APIs that Fortnox publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Suppliers. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.
This API exposes 4 operations across 2 paths, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version 3.0.
Requests are made against a single base URL, https://api.fortnox.se/3.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 2
Fortnox Suppliers API declares
2 security schemes
for authenticating requests.
An API key is passed in the header as Access-Token (accessToken).
An API key is passed in the header as Client-Secret (clientSecret).
By default, every request must be authenticated.
accessToken— OAuth2 Access-Token (Bearer JWT, valid 1 hour) obtained via the Authorization Code Flow from https://apps.fortnox.se/oauth-v1/token. Sent in the Access-Token h…clientSecret— The Client-Secret issued to your registered Fortnox developer application. Sent in the Client-Secret header alongside the Access-Token on every request.
Paths & Operations 4
Across 2 paths, the API surfaces 4 operations — 2 GET, 1 POST, 1 PUT. Each is listed below with its method, path, parameters, and response codes.
Supplier register.
Schemas 3
The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are Supplier (12 properties), MetaInformation (3 properties), ErrorResponse (1 property). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Fortnox 11
Other APIs Fortnox publishes across the network.
This is an independent, third-party profile of Fortnox Suppliers API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
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