> For the complete documentation index, see [llms.txt](https://docs.tryterra.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tryterra.co/faq/help-topics/something-else/docs-support-and-getting-help/docs-navigation-finding-pages.md).

# Where are the API playground and changelog in the docs?

**The API playground** lives in the [reference section](https://docs.tryterra.co/reference/health-and-fitness-api/readme) of the docs, under the Health and Fitness API reference pages. If a link moved after a reorganisation, start from the reference index.

**API release notes** are published in the [changelog section](https://docs.tryterra.co/changelog/2025/readme) of the documentation site, which lists product and data-model changes as they ship.