> ## Documentation Index
> Fetch the complete documentation index at: https://mixpanel-edb78807-fix-callout.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Authentication

## Service Account

[Service Account Authentication Details](/reference/service-accounts)

<Check>
  This is the preferred authentication method for Query API.
</Check>

* Requests parameters must include a `project_id`.

**Projects with[Data Views](https://help.mixpanel.com/hc/en-us/articles/360043782572-Data-Views)**

* In addition to `project_id`, you should include the global data view's `workspace_id` as a request parameter.

**Projects with[Classified Data](https://help.mixpanel.com/hc/en-us/articles/360044295131-Data-Classification)**

* Your results may be filtered based on the Service Account's sensitivity settings.