# Create an anonymous session under a given site

Creates an anonymous session under a given site.

Endpoint: POST /v4/anonymous-sessions/{site}
Version: 2026-01-08
Security: ZephrHmacHttp

## Path parameters:

  - `site` (string, required)
    The site ID

## Response 200 fields (application/json):

  - `tenantId` (string)
    Example: "company"

  - `subTenantId` (string)
    Example: "company|demo"

  - `supplied` (boolean)

  - `expiryDate` (string)
    Example: "2025-02-08 14:29 PM UTC"

  - `startDate` (string)
    Example: "2024-02-08 14:29 PM UTC"

  - `authenticated` (boolean)
    Example: true

  - `state` (string)
    Enum: "anonymous", "recognised", "partially_registered", "authenticated"

  - `device` (string)
    Example: "pc"

  - `browser` (string)
    Example: "Chrome"

  - `os` (string)
    Example: "Mac OSX"

  - `city` (string)
    Example: "London"

  - `geoState` (string)
    Example: "London"

  - `deviceName` (string)
    Example: "Apple Macintosh"

  - `country` (string)
    ISO-3166-2 country code
    Example: "GB"

  - `session_id` (string)
    Example: "26a73b7a-f7d0-48d8-85dd-a04b07313895"

  - `user_id` (string)
    Example: "UU0123456789ABCD"


## Response 401 fields