> For the complete documentation index, see [llms.txt](https://docs.renfter.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.renfter.com/renfter-features/custom-functionality-execution.md).

# Custom Functionality Execution

Lenders can whitelist any custom functionality for the NFTs they choose to rent out. This way, renters have access only to specific functionalities, preventing them from exhausting key utilities or reward features during the rental period