> For the complete documentation index, see [llms.txt](https://docs.extrahorizon.com/extrahorizon/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.extrahorizon.com/extrahorizon/api-reference.md).

# API Reference

- [OpenAPI Specifications](https://docs.extrahorizon.com/extrahorizon/api-reference/api-specs.md)
- [Changelog](https://docs.extrahorizon.com/extrahorizon/api-reference/changelog-chronological.md)
- [Per-service Changelog](https://docs.extrahorizon.com/extrahorizon/api-reference/changelog-chronological/changelog-service.md)
- [Postman Reference Collection](https://docs.extrahorizon.com/extrahorizon/api-reference/postman-reference-collection.md)