How can I access the API?

The interactive Billnado API documentation is available at api.billnado.be/documentation. This URL is publicly accessible and may be freely used and shared. It allows you to explore the available endpoints, request models and responses. Authentication is required to make secured API requests.

API definitions

The API documentation is divided into multiple definitions that correspond to different groups within the software. Examples include client, account, support and accountant. Each definition contains the endpoints associated with that group.

You can select the desired definition in the documentation. The available endpoints and access to them may differ between definitions and depend on your permissions.

Authentication

The API supports OAuth 2.0. Use it to securely grant your application access to the API on behalf of a Billnado account.