> For the complete documentation index, see [llms.txt](https://aegion-dynamic.gitbook.io/nimbus/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aegion-dynamic.gitbook.io/nimbus/server-side-development/core-api/authentication.md).

# Authentication

## Authentication

* HTTP Authentication, scheme: bearer
* API Key (api\_key)
  * Parameter Name: **api\_key**, in: header.