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

# Create a message

> Create a new message in a chat.



## OpenAPI

````yaml post /api/chats/{chat_id}/messages
openapi: 3.1.0
info:
  title: CRM Backend
  description: >

    CRM Backend API for managing contacts, companies, deals, activities, and
    AI-powered chat.


    ## Authentication


    Protected endpoints accept either:


    - **JWT (Bearer)**: `Authorization: Bearer <jwt>` with `X-Account-ID` header

    - **API Key**: `Authorization: Bearer sk_xxx` or `X-API-Key: sk_xxx`


    API keys are created in Developer Settings and provide account-level access.
  version: 0.1.0
servers:
  - url: https://api.morphic.io
    description: Production
security: []
tags:
  - name: Contacts
    description: Manage contacts (people) in the CRM.
  - name: Companies
    description: Manage companies and their teams.
  - name: Deals
    description: Manage deals and pipeline stages.
  - name: Activities
    description: Log and track activities (calls, meetings, tasks).
  - name: Notes
    description: Create and manage notes attached to CRM entities.
  - name: Favorites
    description: Bookmark records and organize them into folders.
  - name: Exports
    description: Export CRM data to CSV files.
  - name: Imports
    description: Import data into the CRM from CSV files.
  - name: Email Drafts
    description: Create, manage, and send email drafts.
  - name: Email Templates
    description: Create and manage reusable email templates.
  - name: Knowledge Base
    description: Manage knowledge base documents and pages.
  - name: Chats
    description: AI-powered chat conversations and messages.
  - name: Cortex Search
    description: Semantic search and AI-powered Q&A over CRM data.
  - name: Custom Fields
    description: Define and manage custom field definitions and values.
  - name: Categories
    description: Organize CRM entities with categories and tags.
  - name: Transcription
    description: Transcribe audio files using AI.
paths:
  /api/chats/{chat_id}/messages:
    post:
      tags:
        - Chats
      summary: Create a message
      description: Create a new message in a chat.
      operationId: create-message
      parameters:
        - name: chat_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
            title: Chat Id
        - name: x-account-id
          in: header
          required: false
          schema:
            anyOf:
              - type: string
              - type: 'null'
            title: X-Account-Id
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MessageCreate'
      responses:
        '201':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Message'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
      security:
        - APIKey: []
components:
  schemas:
    MessageCreate:
      properties:
        role:
          type: string
          title: Role
          description: 'Message role: ''user'', ''assistant'', or ''system'''
        content:
          type: string
          minLength: 1
          title: Content
          description: Message content
        attachments:
          type: object
          title: Attachments
          description: File attachments metadata
        metadata:
          type: object
          title: Metadata
      type: object
      required:
        - role
        - content
      title: MessageCreate
      examples:
        - content: What deals are closing this quarter?
          role: user
        - content: Summarize my meetings with Acme Corp
          metadata:
            enable_transparency: true
          role: user
    Message:
      properties:
        id:
          type: string
          format: uuid
          title: Id
        created_at:
          type: string
          format: date-time
          title: Created At
        updated_at:
          type: string
          format: date-time
          title: Updated At
        role:
          type: string
          title: Role
          description: 'Message role: ''user'', ''assistant'', or ''system'''
        content:
          type: string
          minLength: 1
          title: Content
          description: Message content
        attachments:
          type: object
          title: Attachments
          description: File attachments metadata
        metadata:
          type: object
          title: Metadata
        chat_id:
          type: string
          format: uuid
          title: Chat Id
      type: object
      required:
        - id
        - created_at
        - updated_at
        - role
        - content
        - chat_id
      title: Message
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError
  securitySchemes:
    APIKey:
      type: apiKey
      in: header
      name: X-API-Key
      description: API key (sk_xxx) from Developer Settings. No X-Account-ID needed.

````