...

OAuth2 is an internet standard that secures endpoints using tokens, consumer authorization, and client secrets. The web API uses OLTU on top of OAuth2 to provide authentication.

OAuth2 must authenticate over HTTPS. The token can be intercepted between the client and the server if HTTPS is not used.

OAuth2 Overview

The basic steps are:

...

1. Ensure you have a user created in the System > Security > User Level > User Names and Access window with admin privileges configured.
   Image Modified
2. Create a client id and secret

...

Use the Authorization header - base 64 encoding of client id and secret with ":" seperatorseparator.

eg Basic UG9zdG1hbjpzZWNyZXQ=

...