# User search

Public User ID is a parameter that uniquely identifies the user and is known to them, unlike User ID (Public User ID can be email, screen name, etc). Xsolla sends a webhook with the user_search type when a purchase is made outside the game store (e.g., via cash kiosks).

Endpoint: POST user-search
Version: 1.0

## Request fields (application/json):

  - `notification_type` (string, required)
    Notification type.

  - `settings` (object)
    Custom project settings (object).

  - `settings.project_id` (integer)
    Project ID. You can find this parameter in your [Publisher Account](https://publisher.xsolla.com/) next to the name of the project.

  - `settings.merchant_id` (integer)
    Merchant ID.

  - `user` (object, required)
    User details (object).

  - `user.id` (string, required)
    User ID.

  - `user.public_id` (string)
    Public user ID.

## Response 400 fields (application/json):

  - `error` (object)

  - `error.code` (string)

  - `error.message` (string)


## Response 204 fields

## Response 500 fields