To authenticate to the Smooth POS API, you need to include two headers in your API requests:
X-Smoothpos-Token-ID: This header contains your unique API token ID.
X-Smoothpos-Token: This header contains your API token.
The Smooth POS API is a REST API and can be accessed at api.smoothpos.net. All API requests must include these headers to be authorised to access the API resources.
curl -X GET api.smoothpos.net/<ENDPOINT> \
-H "X-Smoothpos-Token-ID: <API_TOKEN_ID>" \
-H "X-Smoothpos-Token: <API_TOKEN>"