# Getting started with the REST API
API (opens new window) is a special web interface that allows interaction with FunnelFlex.AI via HTTP requests (opens new window).
# Authorization
To protect against unauthorized access, every API call to FunnelFlex.AI must include a special token.
The token is unique at the project level and can be found in the project settings:
The token must be included in the header (opens new window) X-SN-TOKEN.
If you do not include the X-SN-TOKEN or the token is incorrect, you will receive a 401 Unauthorized response (opens new window)
# URL for access and versioning
The base URL for the API is https://api.sustain-impact.de/outer/v1.0/
The API uses versioning. Currently, the first version of the API is available and up-to-date.
If the working or contract methods of the API change, the API version will be increased to reflect these incompatible changes.
However, old versions of the API will be supported to ensure the existing applications continue to function properly.