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Welcome to FINUX API Documentation

With FINUX API you have all important banking analysis features combined in one application progamming interface. Say goodbye to manual Excel-sheets, complex BI-Tools, operative accounting systems and isolated bank accounts. With the help of intelligent bank account analysis and the additional integration of accounting systems FINUX gives a unique overview of finances and its context.

About us

FINUX API is a product of fino run GmbH. fino is a specialist in the banking sector and works with more than 500 banks in Germany. All products use the highest security standards to ensure the security of customer data. The application servers are located in an ISO-27001 certified data center in Germany. Data storage and data processing takes place exclusively in the European Union.

Getting started

To provide a high secure API we use JWT.


If you login or register, you will get two JWT-Tokens. One of it is the accessToken to get access for all endpoints. But after 5 minutes (that's the PSD2-Standard) the accessToken will expire. So if you get http-status-code 401 (Unauthorized) you have to use the refreshToken. With this token you will get a new accessToken using /api/finux/auth/refresh.



  • Method: POST
  • Path: /api/finux/auth/refresh
  • Header: X-Fino-ClientID : clientID and X-Fino-ClientSecret : token

expected request:

  "refreshToken": "string"

expected response:

    "status": {
        "message": "OK"
    "data": {
        "accessToken": "string",
        "expiresIn": "int",
        "refreshExpiresIn": "int",
        "refreshToken": "string",
        "tokenType": "string",
        "notBeforePolicy": "int",
        "sessionState": "string",
        "scope": "string"
    "code": 200