> For the complete documentation index, see [llms.txt](https://niftsy-protocol-niftsy-1.gitbook.io/niftsy/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://niftsy-protocol-niftsy-1.gitbook.io/niftsy/tech/technical-paper/index.md).

# Index

An index is a decentralised numerical (quantitative) indicator that helps to assess both the NFT market as a whole and its individual sectors, areas, etc. The Index takes all data from the Protocol, Oracle and other public sources.