# Functionality-specific details

- [Token rental status check](/developers/integration/smart-contracts/functionality-specific-details/token-rental-status-check.md)
- [Token offed for rent check](/developers/integration/smart-contracts/functionality-specific-details/token-offed-for-rent-check.md)
- [Method whitelisting](/developers/integration/smart-contracts/functionality-specific-details/method-whitelisting.md)
- [Original NFT method call](/developers/integration/smart-contracts/functionality-specific-details/original-nft-method-call.md)