Get Started

Get access to Viessmann APIs quickly and easily.

By following these 4 steps, you can start calling Viessmann APIs in less than 5 minutes:

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1. Explore APIs

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2. Create an Account

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3. Get API key

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4. Make your first API call

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1. Explore APIs

You can find all our APIs in our API documentation. If you are not sure, which API is suitable for your case, find guidance in our section choosing the right API.

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2. Create an Account

To log in to the Developer Portal, you need a Viessmann account. The account is the same you already use for example as login for the ViCare App. So either use your existing login data or register here first to log in to the portal afterwards. Welcome to the Viessmann Developer Portal! Accept the terms of use of the portal and you are ready to start immediately.

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3. Get API key

To start using the APIs, you first need to tell the system that you are authorized to use them. This process is called authentication.

All you need to do is append an alphanumeric string called token to your API calls. This token identifies you as a valid user and is generated from two parameters: API key and API secret.

Getting the API key and API secret is easy. Once you have logged in to the Developer Portal, you can follow these steps:

  • Click on API Keys in the navigation bar
  • Click on "Add new client" button
  • Enter the data for your application and click on "Create Client"

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4. Make your first API call

Before you can make your first API call, you must obtain an access token. For security reasons, we have implemented the OAuth2 process that provides you with an access token based on your API key and API secret: please take a look at our authentication section in the API documentation.

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