> ## Documentation Index
> Fetch the complete documentation index at: https://formbricks.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Create or Identify User

> Endpoint for creating or identifying a user within the specified environment. If the user already exists, this will identify them and potentially update user attributes. If they don't exist, it will create a new user.



## OpenAPI

````yaml /api-v2-reference/openapi.yml post /client/{environmentId}/user
openapi: 3.1.0
info:
  title: Formbricks API
  description: Manage Formbricks resources programmatically.
  version: 2.0.0
servers:
  - url: https://app.formbricks.com/api/v2
    description: Formbricks Cloud
security:
  - apiKeyAuth: []
tags:
  - name: Health
    description: Operations for checking critical application dependencies health status.
  - name: Roles
    description: Operations for managing roles.
  - name: Me
    description: Operations for managing your API key.
  - name: Management API - Responses
    description: Operations for managing responses.
  - name: Management API - Contacts
    description: Operations for managing contacts.
  - name: Management API - Contact Attributes
    description: Operations for managing contact attributes.
  - name: Management API - Contact Attribute Keys
    description: Operations for managing contact attribute keys.
  - name: Management API - Surveys
    description: Operations for managing surveys.
  - name: Management API - Surveys - Contact Links
    description: Operations for generating personalized survey links for contacts.
  - name: Management API - Webhooks
    description: Operations for managing webhooks.
  - name: Organizations API - Teams
    description: Operations for managing teams.
  - name: Organizations API - Project Teams
    description: Operations for managing project teams.
  - name: Organizations API - Users
    description: Operations for managing users.
paths:
  /client/{environmentId}/user:
    post:
      tags:
        - Client API - User
      summary: Create or Identify User
      description: >-
        Endpoint for creating or identifying a user within the specified
        environment. If the user already exists, this will identify them and
        potentially update user attributes. If they don't exist, it will create
        a new user.
      requestBody:
        content:
          application/json:
            schema:
              example:
                userId: user123
                attributes: {}
              type: object
      responses:
        '200':
          content:
            application/json:
              example:
                userId: user123
                state: identified
              schema:
                type: object
          description: OK
      security: []
      servers:
        - url: https://app.formbricks.com/api/v2
          description: Formbricks Client
components:
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: Use your Formbricks x-api-key to authenticate.

````