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

# OpenAPI — Instance API

The full OpenAPI 3.1 specification for the K-AI Instance API. Authenticate every request with `instance-id` and `api-key` headers. Base URL: `https://api.kai-studio.ai`.