openapi: 3.0.1
info:
  title: Papercups Conversations Messages API
  description: REST API for Papercups, the open-source customer-messaging and live-chat platform built on Elixir/Phoenix. Covers the documented conversations, messages, and customers resources plus the authenticated user endpoint. Authentication uses a Bearer API key (available from the Papercups dashboard). The hosted instance is at https://app.papercups.io; self-hosted deployments expose the same paths on their own host. Papercups is in maintenance mode (community-maintained).
  termsOfService: https://papercups.io
  contact:
    name: Papercups
    url: https://github.com/papercups-io/papercups
  license:
    name: MIT
    url: https://github.com/papercups-io/papercups/blob/master/LICENSE
  version: '1.0'
servers:
- url: https://app.papercups.io/api/v1
  description: Papercups hosted instance
- url: https://{host}/api/v1
  description: Self-hosted Papercups instance
  variables:
    host:
      default: app.papercups.io
      description: Hostname of your self-hosted Papercups deployment
security:
- bearerAuth: []
tags:
- name: Messages
  description: Individual messages within conversations.
paths:
  /messages:
    get:
      operationId: listMessages
      tags:
      - Messages
      summary: List messages
      parameters:
      - name: conversation_id
        in: query
        required: false
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MessageListResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createMessage
      tags:
      - Messages
      summary: Create a message
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                message:
                  $ref: '#/components/schemas/MessageInput'
      responses:
        '201':
          description: Created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MessageResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /messages/{id}:
    parameters:
    - $ref: '#/components/parameters/IdParam'
    get:
      operationId: getMessage
      tags:
      - Messages
      summary: Retrieve a message
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MessageResponse'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteMessage
      tags:
      - Messages
      summary: Delete a message
      responses:
        '204':
          description: No Content
        '404':
          $ref: '#/components/responses/NotFound'
components:
  responses:
    Unauthorized:
      description: Missing or invalid API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    MessageResponse:
      type: object
      properties:
        data:
          $ref: '#/components/schemas/Message'
    MessageListResponse:
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/Message'
    MessageInput:
      type: object
      required:
      - body
      - conversation_id
      properties:
        body:
          type: string
        conversation_id:
          type: string
        customer_id:
          type: string
        user_id:
          type: string
    Message:
      type: object
      properties:
        id:
          type: string
        account_id:
          type: string
        conversation_id:
          type: string
        customer_id:
          type: string
          nullable: true
        user_id:
          type: string
          nullable: true
        body:
          type: string
        type:
          type: string
        created_at:
          type: string
          format: date-time
        seen_at:
          type: string
          format: date-time
          nullable: true
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            status:
              type: integer
            message:
              type: string
  parameters:
    IdParam:
      name: id
      in: path
      required: true
      schema:
        type: string
      description: Resource identifier (UUID).
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: 'Bearer API key (personal API key / token) from the Papercups dashboard, sent as `Authorization: Bearer <API_KEY>`.'