> For the complete documentation index, see [llms.txt](https://adidas.gitbook.io/api-guidelines/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://adidas.gitbook.io/api-guidelines/general-guidelines/contract.md).

# Contract

An approved API Design, represented by its API Description or schema, **MUST** represent the **contract** between API stakeholders, implementers, and consumers.

An update to the corresponding contract (API Design) **MUST** be implemented and approved before any change to an API is made.