Authentication is achieved using two pieces of data: an api token and a project token. You must supply in each request an api key as well as a project key that indicates what project is being accessed. You can find both of these parameters and the project settings page for the project that you want to integrate with.
For Example: If you want to create an error, you would post the required JSON data to the following URL:
If your authentication fails you'll receive a 403 response and should verify your API TOKEN and PROJECT TOKEN are correct. You can find these values in the project settings page.