> For the complete documentation index, see [llms.txt](https://docs.nxtfi.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nxtfi.org/playground.md). # Playground Total blockchain power in a user-friendly interface. Here, you can test your Smart Contract logic with a quick and powerful tool. Check the [authentication](/authentication.md) section for permissions and the [Smart Contract](/smart-contracts.md) section for usage information. {% embed url="" %}