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

# Authentication

Shipbubble uses API keys to authenticate requests. Test mode API keys have the prefix **sb\_sandbox** and Live mode API keys have the prefix **sb\_prod**.

Shipbubble uses the Bearer Authentication header to authenticate requests. You will need to include Authorization: Bearer **API\_KEY** in the header for all requests.

**Sample header** Authorization: Bearer sb\_sandbox\_uirgtrutghr57495