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

# Authentication

Requests should include the Shopify store's Zapiet API key as a query parameter named "api\_key".   Store Pickup + Delivery -> Settings -> Developer.

```
GET https://api-us.zapiet.com/v1.0/locations?api_key=API_KEY
```