The API utilizes a common mechanism in how requests are authenticated, with two fields for authentication. The first is an ID that belongs to the account, and the second is a changeable randomly generated user key that is distinct from the password for the account. Here's how to find them.

A unique user identifier. This number can be found in the My Account tab of the Client Interface.

A user’s unique authentication key string. Created automatically when a user is created and can be regenerated at anytime in the My Account tab of the User Interface. Clicking the refresh icon next to the User Key will invalidate the previous key and require usage of the new key moving forward.

OAuth 2.0 API Token Authentication
Alternatively, we support the refresh token authentication with the Okta OIDC Identity Provider's API Access Management system, See our user OAuth 2 API User Guide for setup and configuration details.