Authentication

After enabling the API for your account you’ll be given an API Key to be used for  HTTPS authentication.
This key is unique for each account user and is available through Settings >> Personal Info.

This key must be passed in each HTTPS request in order to authenticate the API user.

Please keep this token as secure as possible in order to avoid third party’s to access your Invoic€xpress data.

All API requests must be sent over HTTPS in order to guarantee the encryption of the sent data. HTTP access is denied.