openapi: 3.0.1
info:
  title: Dify End Users API
  description: REST API for Dify applications and knowledge bases. Application endpoints authenticate
    with an app API key; knowledge endpoints authenticate with a dataset API key.
  version: 1.0.0
servers:
- url: https://{api_base_url}
  description: Base URL of the Dify Service API. For self-hosted deployments, replace it with your own
    API base URL.
  variables:
    api_base_url:
      default: api.dify.ai/v1
      description: Host and path of the API base URL, without the `https://` prefix.
security:
- ApiKeyAuth: []
tags:
- name: End Users
  description: Operations related to end user information.
paths:
  /end-users/{end_user_id}:
    get:
      summary: Get End User Info
      description: '**Available for**: Chatflow, Workflow, Agent, Chatbot, Legacy Agent, Text Generator
        apps.


        Returns an end user''s details by ID. Useful for resolving an end-user ID returned by another
        endpoint, such as `created_by` in the [Upload File](/en/api-reference/files/upload-file) response.'
      operationId: getEndUserChat
      tags:
      - End Users
      parameters:
      - name: end_user_id
        in: path
        required: true
        description: ID of the end user to look up.
        schema:
          type: string
          format: uuid
      responses:
        '200':
          description: End user retrieved successfully.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EndUserDetail'
              examples:
                endUserDetail:
                  summary: Response Example
                  value:
                    id: f1e2d3c4-b5a6-7890-abcd-ef1234567890
                    tenant_id: 11223344-5566-7788-99aa-bbccddeeff00
                    app_id: a1b2c3d4-5678-90ab-cdef-1234567890ab
                    type: service-api
                    external_user_id: abc-123
                    name: null
                    is_anonymous: false
                    session_id: abc-123
                    created_at: '2024-01-16T12:00:29Z'
                    updated_at: '2024-01-16T12:00:29Z'
        '404':
          description: '`end_user_not_found` : End user not found.'
          content:
            application/json:
              examples:
                end_user_not_found:
                  summary: end_user_not_found
                  value:
                    status: 404
                    code: end_user_not_found
                    message: End user not found.
      x-mint:
        href: /en/api-reference/end-users/get-end-user-info
        metadata:
          title: Get End User Info
          sidebarTitle: Get End User Info
components:
  schemas:
    EndUserDetail:
      type: object
      properties:
        id:
          type: string
          format: uuid
          description: End user ID.
        tenant_id:
          type: string
          format: uuid
          description: Tenant ID.
        app_id:
          type: string
          format: uuid
          nullable: true
          description: Application ID.
        type:
          type: string
          description: End user type. Always `service-api` for Service API users.
        external_user_id:
          type: string
          nullable: true
          description: The `user` identifier provided in API requests (e.g., the `user` field in [Send
            Chat Message](/en/api-reference/chat-messages/send-chat-message)).
        name:
          type: string
          nullable: true
          description: End user name.
        is_anonymous:
          type: boolean
          description: Whether the user is anonymous. `true` when no `user` identifier was provided in
            the original API request.
        session_id:
          type: string
          description: Session identifier. Defaults to the `external_user_id` value.
        created_at:
          type: string
          format: date-time
          description: Creation timestamp.
        updated_at:
          type: string
          format: date-time
          description: Last update timestamp.
  securitySchemes:
    ApiKeyAuth:
      type: http
      scheme: bearer
      bearerFormat: API_KEY
      description: 'Every request authenticates with an API key: `Authorization: Bearer {API_KEY}`. App
        endpoints take an app API key; knowledge endpoints take a knowledge base API key ([Get Started](/en/api-reference/guides/get-started)).


        Keep keys server-side; never embed them in client code. Requests with a missing or invalid key
        fail with HTTP `401` (`unauthorized`).'
x-provenance:
  generated: '2026-09-06'
  method: derived
  source: openapi/_original/dify-service-api-openapi.json
  note: Per-tag split of the first-party Dify Service API OpenAPI harvested from https://docs.dify.ai/en/api-reference/openapi_service.json
    (advertised in https://docs.dify.ai/llms.txt). Paths, schemas and operationIds are verbatim from that
    spec.