> For the complete documentation index, see [llms.txt](https://sixnetwork.gitbook.io/nft-gen-2-tech-doc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sixnetwork.gitbook.io/nft-gen-2-tech-doc/integration.md).

# Integration

There are 2 modes you can integrate with NFT Data Chain.

* **System mode:** The mode in which NFT's creator has complete control of the whole metadata of the token holder
* **Public mode:** With this mode, holders can act on their metadata based on rules defined in actions.