The Sandbox is one of Deck’s two main environments — the other being Live. Jobs run the same way in both environments, but they differ in two important ways: the credentials you use and the data you receive.
Just a heads-up!
All the data in the Sandbox environment is fake. It’s designed to help you get familiar with how Jobs work before executing them on real data sources.
Unlike the Sandbox, the Live environment connects to actual data sources. Data cannot be moved between environments — Sandbox data stays in Sandbox, and Live data stays in Live. Once you’ve created a free account, you’ll immediately receive your Sandbox secret through the Dashboard. You can use it to test any Jobs and ensure everything works as expected. When you’re ready to interact with real data, you can upgrade to get your Production secret from your Dashboard.

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Using the Sandbox

To use the Sandbox environment, send your requests to: 
https://sandbox.deck.co/api/v1
Instead of: 
https://live.deck.co/api/v1
All Deck endpoints can be tested right away in the Sandbox — no extra configuration required, and it’s free to use.