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

# Send Message



## OpenAPI

````yaml post /api/v1/conversations/{cuuid}/messages
openapi: 3.0.0
info:
  title: Libredesk API
  description: >-
    REST API documentation for Libredesk helpdesk system.


    ## Authentication


    The Libredesk API supports two authentication methods:


    ### 1. Basic Authentication

    Use your API key and secret with Basic authentication:

    ```

    Authorization: Basic <base64_encoded_api_key:api_secret>

    ```


    ### 2. Token Authentication  

    Use your API key and secret with token authentication:

    ```

    Authorization: token api_key:api_secret

    ```


    To obtain API credentials, generate them from your agent profile in the
    Libredesk dashboard.
  version: 1.0.0
servers:
  - url: http://localhost:8080
    description: Local development server
security:
  - basicAuth: []
  - tokenAuth: []
paths:
  /api/v1/conversations/{cuuid}/messages:
    post:
      tags:
        - Conversations
      summary: Send Message
      operationId: handleSendMessage
      parameters:
        - name: cuuid
          in: path
          required: true
          schema:
            type: string
      requestBody:
        description: Message details
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MessageRequest'
      responses:
        '200':
          description: Message sent successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MessageResponse'
        '401':
          description: Unauthorized
        '500':
          description: Internal server error
      security:
        - basicAuth: []
        - tokenAuth: []
components:
  schemas:
    MessageRequest:
      type: object
      required:
        - sender_type
      properties:
        message:
          type: string
          description: Message content
        attachments:
          type: array
          items:
            type: integer
          description: Attachment IDs
        private:
          type: boolean
          description: Whether message is private (internal note)
        to:
          type: array
          items:
            type: string
          description: Email recipients
        cc:
          type: array
          items:
            type: string
          description: CC recipients
        bcc:
          type: array
          items:
            type: string
          description: BCC recipients
        sender_type:
          type: string
          enum:
            - agent
            - contact
          description: Specifies whether the message is sent by an agent or a contact.
        mentions:
          type: array
          description: Agents or teams mentioned in a private note.
          items:
            type: object
            properties:
              type:
                type: string
                enum:
                  - agent
                  - team
                description: Whether the mention targets an agent or a team
              id:
                type: integer
                description: ID of the mentioned agent or team
        echo_id:
          type: string
          description: >-
            Client-generated identifier echoed back to deduplicate the message
            on the sender's side
    MessageResponse:
      type: object
      properties:
        status:
          type: string
          example: success
        data:
          $ref: '#/components/schemas/Message'
    Message:
      type: object
      properties:
        id:
          type: integer
        created_at:
          type: string
          format: date-time
        updated_at:
          type: string
          format: date-time
        uuid:
          type: string
        type:
          type: string
          enum:
            - incoming
            - outgoing
        status:
          type: string
          enum:
            - pending
            - sent
            - received
            - failed
        conversation_id:
          type: integer
        conversation_uuid:
          type: string
        content:
          type: string
        text_content:
          type: string
        content_type:
          type: string
          enum:
            - html
            - text
        private:
          type: boolean
        sender_id:
          type: integer
        sender_type:
          type: string
          enum:
            - agent
            - contact
        meta:
          type: object
          properties:
            to:
              type: array
              items:
                type: string
            cc:
              type: array
              items:
                type: string
            bcc:
              type: array
              items:
                type: string
            from:
              type: array
              items:
                type: string
            subject:
              type: string
        attachments:
          type: array
          items:
            type: object
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: >-
        Basic authentication using base64 encoded API key and secret. Format:
        `Authorization: Basic <base64(api_key:api_secret)>`
    tokenAuth:
      type: apiKey
      name: Authorization
      in: header
      description: >-
        Token authentication using API key and secret. Format: `Authorization:
        token api_key:api_secret`

````