> For the complete documentation index, see [llms.txt](https://docs.boiler.gg/bot/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.boiler.gg/bot/creator-section/global/requirements/single-nft-erc721.md).

# Single NFT (ERC721)

Boiler allows you to add requirements based on an amount of ERC721 tokens that a user must own.

Part of the requirements you set can can be based users owning a specific NFT to be able to join the access list. You first choose the ERC721 requirement and set the address and the minimum amount. 

<figure><img src="https://126530284-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FFWk9XI1GLsUugEWDfuWd%2Fuploads%2FOYy3BJgrmfA4ckHXsz21%2Ferc721.gif?alt=media&amp;token=520dd719-f79c-4991-a7aa-289e62ae7ef6" alt=""><figcaption></figcaption></figure>

## Add Attributes Requirement

Once set up, you can add the specific attributes:

<figure><img src="https://126530284-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FFWk9XI1GLsUugEWDfuWd%2Fuploads%2Fhk6azP2X8gY2qfNpYvjE%2Ferc721-attributes.gif?alt=media&amp;token=adf74f79-5dfd-4f7a-903d-caed69cc8725" alt=""><figcaption></figcaption></figure>

Next up, we'll cover the requirements of multiple NFTs.&#x20;