> For the complete documentation index, see [llms.txt](https://vingt-io.gitbook.io/vingt.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://vingt-io.gitbook.io/vingt.io/technical-guide/visp-technical-foundation/contract-functions.md).

# Contract Functions

Each VISP smart contract is governed by various functions through which protocol interaction takes place. The sub-section covers these functions in detail.