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

# Get Conversation by External ID

> Looks up a conversation by its external application ID (the ID from the source system that originally imported the conversation). Returns the Attention conversation UUID if found.



## OpenAPI

````yaml get /conversations/by-external-id/{externalId}
openapi: 3.0.1
info:
  title: Attention Service V2
  description: Attention Service API V2
  termsOfService: https://www.attention.com/terms-of-use
  contact:
    name: Attention Team
    url: https://docs.attention.com/welcome
    email: support@attention.com
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html
  version: 1.8.0
servers:
  - url: https://api.attention.tech/v2
security:
  - APIKeyHeader: []
paths:
  /conversations/by-external-id/{externalId}:
    get:
      tags:
        - Conversation
      summary: Get Conversation by External ID
      description: >-
        Looks up a conversation by its external application ID (the ID from the
        source system that originally imported the conversation). Returns the
        Attention conversation UUID if found.
      operationId: conversationByExternalId
      parameters:
        - name: externalId
          in: path
          description: The external application ID used when the conversation was imported
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Conversation found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ConversationByExternalIdResponse'
            application/vnd.api+json:
              schema:
                $ref: '#/components/schemas/ConversationByExternalIdResponse'
        '401':
          description: Authentication failed - valid API key required
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
            application/vnd.api+json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: No conversation found for the given external ID
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
            application/vnd.api+json:
              schema:
                $ref: '#/components/schemas/Error'
        default:
          description: Unexpected error occurred
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
            application/vnd.api+json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    ConversationByExternalIdResponse:
      type: object
      properties:
        conversation_id:
          type: string
          description: Attention conversation UUID corresponding to the external ID
          example: conv_abc123
      example:
        conversation_id: conv_abc123
    Error:
      type: object
      properties:
        id:
          type: string
          description: A unique identifier for the error.
        status:
          type: string
          description: >-
            The HTTP status code applicable to this problem, expressed as a
            string value.
        code:
          type: string
          description: An application-specific error code, expressed as a string value.
        title:
          type: string
          description: A short, human-readable summary of the problem.
        detail:
          type: string
          description: >-
            A human-readable explanation specific to this occurrence of the
            problem.
        source:
          type: object
          properties:
            pointer:
              type: string
            parameter:
              type: string
        meta:
          type: object
          properties: {}
      example:
        id: not_found_error
        status: '404'
        code: '404'
        title: Not Found Error
        detail: The requested resource was not found
        source:
          pointer: /data/attributes/id
  securitySchemes:
    APIKeyHeader:
      type: apiKey
      name: Authorization
      in: header

````