1) Create a Sandbox account

We’ll be using the Sandbox environment of our API. The sandbox lets you develop on the Tremendous API using mock data. It’s free to create an account; no approval is required. The sandbox environment's URL is testflight.tremendous.com.

Create a Sandbox account using this link, and fill out the onboarding forms.

Once you complete that, confirm your email address, and you'll be logged into the Tremendous Dashboard in the Sandbox environment.