---
title: serverToServerKeyAuth
framework: CloudKit JS
role: symbol
role_heading: Instance Property
platforms: [cloudkit js 1.0+]
path: cloudkitjs/cloudkit.containerconfig/servertoserverkeyauth
---

# serverToServerKeyAuth

The server-to-server authentication key and related properties, described in the Discussion section. Either this key or the apiTokenAuth key is required. If you include this key, don’t include the apiTokenAuth key.

## Declaration

```data
attribute Object serverToServerKeyAuth;
```