---
title: "User context object"
slug: "user-context-object"
abstract: "Describes the user context object in a Discover Search and Recommendation request."
---
# User context object

The following table describes the keys in the `user` `context` object:

| Key | Type | Description | Value |
| --- | --- | --- | --- |
| user_id | string | User ID identified by the developer.NoteYou must specify either user_id or uuid to allow user activity tracking and assignment to active experiments if any. | n/a |
| uuid | string | User ID identified by Discover. | n/a |
| gender | string | User gender. | malefemale |
| email | string | User email address. | n/a |
| order_id | list of strings | Order ID associated with the request. | n/a |
| new_user | boolean | If yes, indicates that the current user is new. | n/a |
| groups | list of strings | Custom groups or segments assigned to the user. | n/a |
| custom | custom object | Custom user context. Pass the name of the custom user context as the key (string) and the actual value as the value (string). You can pass more than one key:value pair.Example:{"customID1": "value1", "customID2": "value2"} | n/a |