Zylo uses API tokens for authentication. You can retrieve your token ID and token secret by going to your account, selecting Admin from the main menu, and then going to the Company Tokens tab. Once you select Request Token, you can create a named token and assign the permissions you wish to associate with it. You will need to record the Token ID and Token Secret in order to authenticate against the API. Please note that the Token Secret will only be displayed when the key is generated - if you do not record it then you will need to generate a new token in order to use the API.
In order to authenticate individual API requests, you need to add a bearer token to your request. The value of the bearer token is your Token ID and Token Secret separated by a colon, i.e.:
curl 'https://api.zylo.com/v1/subscriptions' \
-H "Authorization: Bearer <TOKENID:TOKENSECRET>"
A successful response will return a json object returning all available subscription information.