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

# Create project

> Creates an evergreen project (workspace) owned by the authenticated user.
Use the returned `id` to publish the project as a public sensemaking topic
via `PATCH /projects/{id}/sensemaking`, or reuse an existing project id you
already own.




## OpenAPI

````yaml /api-reference/openapi.yaml post /projects
openapi: 3.1.0
info:
  title: Harmonica API
  version: 1.0.0
  description: >
    REST API for the Harmonica structured deliberation platform.

    Provides access to sessions and their data, including creating, updating,
    and querying sessions, plus response submission for active sessions.
  contact:
    name: Harmonica
    url: https://harmonica.chat
servers:
  - url: https://app.harmonica.chat/api/v1
    description: Production
  - url: http://localhost:3000/api/v1
    description: Local development
security:
  - apiKey: []
paths:
  /projects:
    post:
      tags:
        - Projects
      summary: Create project
      description: >
        Creates an evergreen project (workspace) owned by the authenticated
        user.

        Use the returned `id` to publish the project as a public sensemaking
        topic

        via `PATCH /projects/{id}/sensemaking`, or reuse an existing project id
        you

        already own.
      operationId: createProject
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateProjectRequest'
      responses:
        '201':
          description: Project created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Project'
        '400':
          description: Validation error (missing title)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    CreateProjectRequest:
      type: object
      properties:
        title:
          type: string
          maxLength: 200
          description: Project (workspace) title.
        description:
          type: string
          maxLength: 2000
          nullable: true
          description: Optional project description (markdown).
      required:
        - title
    Project:
      type: object
      properties:
        id:
          type: string
          format: uuid
        title:
          type: string
        description:
          type: string
          nullable: true
        status:
          type: string
          description: Project lifecycle status (active, draft, deleted).
        is_public:
          type: boolean
        created_at:
          type: string
          format: date-time
      required:
        - id
        - title
        - status
        - is_public
        - created_at
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
              enum:
                - unauthorized
                - forbidden
                - not_found
                - validation_error
                - rate_limited
                - internal_error
                - unprocessable
            message:
              type: string
          required:
            - code
            - message
      required:
        - error
  responses:
    Unauthorized:
      description: Missing or invalid API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error:
              code: unauthorized
              message: Invalid or missing API key
  securitySchemes:
    apiKey:
      type: http
      scheme: bearer
      description: |
        API key authentication. Pass your key as a Bearer token.
        Keys use the format `hm_live_<32 hex chars>`.
        Generate keys from your Harmonica dashboard settings.

````