> For the complete documentation index, see [llms.txt](https://thirdfi.gitbook.io/thirdfi.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://thirdfi.gitbook.io/thirdfi.org/product/developer-sandbox.md).

# Developer Sandbox

Set up the sandbox environment to allow building and testing in the testnet.

### Process:

1. Developers create a new API key of the sandbox environment through the production frontend Dashboard. 
2. Developers use the sandbox API key to access the sandbox API with the sandbox URL. 
3. The API for the sandbox environment needs to be verified by checking the sandbox secret key to access the sandbox environment.

Adding a whitelisted IP for the sandbox server is required, which is the only allowed access for the IP address of the production environment to terminate any unauthorized access.

#### Features:

* Show sandbox data on the Developer Portal
* Allows developers to test transactions in testnet without spending any real assets/funds during integration.

{% embed url="<https://sandbox.thirdfi.org/>" %}