International Business Machines Messages API

Send messages to an assistant.

Documentation GitHub OpenAPI

Operations 2

POST /v2/assistants/{assistant_id}/sessions/{session_id}/message International Business Machines Send user input to assistant #

POST /v2/assistants/{assistant_id}/message International Business Machines Send user input to assistant (stateless) #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: International Business Machines IBM watsonx Assistant v2 Messages API
  description: The IBM watsonx Assistant v2 API enables developers to build conversational interfaces into applications, devices, and channels. The API supports creating and managing assistants, sessions, and message interactions using natural language understanding and dialog management.
  version: 2.0.0
  contact:
    name: IBM Cloud
    url: https://cloud.ibm.com/apidocs/assistant-v2
  license:
    name: IBM Cloud Terms
    url: https://www.ibm.com/terms
servers:
- url: https://api.us-south.assistant.watson.cloud.ibm.com
  description: US South (Dallas)
- url: https://api.eu-de.assistant.watson.cloud.ibm.com
  description: EU Central (Frankfurt)
- url: https://api.eu-gb.assistant.watson.cloud.ibm.com
  description: EU (London)
security:
- bearerAuth: []
tags:
- name: Messages
  description: Send messages to an assistant.
paths:
  /v2/assistants/{assistant_id}/sessions/{session_id}/message:
    post:
      operationId: message
      summary: International Business Machines Send user input to assistant
      description: Send user input to an assistant and receive a response within the context of a session.
      tags:
      - Messages
      parameters:
      - name: assistant_id
        in: path
        required: true
        schema:
          type: string
      - name: session_id
        in: path
        required: true
        schema:
          type: string
      - name: version
        in: query
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MessageRequest'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MessageResponse'
  /v2/assistants/{assistant_id}/message:
    post:
      operationId: messageStateless
      summary: International Business Machines Send user input to assistant (stateless)
      description: Send user input to an assistant without maintaining a session.
      tags:
      - Messages
      parameters:
      - name: assistant_id
        in: path
        required: true
        schema:
          type: string
      - name: version
        in: query
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/StatelessMessageRequest'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StatelessMessageResponse'
components:
  schemas:
    StatelessMessageRequest:
      type: object
      properties:
        input:
          type: object
          properties:
            message_type:
              type: string
            text:
              type: string
        context:
          type: object
    MessageResponse:
      type: object
      properties:
        output:
          type: object
          properties:
            generic:
              type: array
              items:
                type: object
                properties:
                  response_type:
                    type: string
                  text:
                    type: string
            intents:
              type: array
              items:
                type: object
                properties:
                  intent:
                    type: string
                  confidence:
                    type: number
            entities:
              type: array
              items:
                type: object
                properties:
                  entity:
                    type: string
                  value:
                    type: string
                  confidence:
                    type: number
        context:
          type: object
    StatelessMessageResponse:
      type: object
      properties:
        output:
          type: object
        context:
          type: object
        user_id:
          type: string
    MessageRequest:
      type: object
      properties:
        input:
          type: object
          properties:
            message_type:
              type: string
              enum:
              - text
              - search
            text:
              type: string
            options:
              type: object
              properties:
                return_context:
                  type: boolean
                debug:
                  type: boolean
        context:
          type: object
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: IAM Token

International Business Machines Messages API

Operations 2

Documentation

Specifications

Schemas & Data

Other Resources