openapi: 3.1.0
info:
  title: Todoist Comments API
  description: The Todoist API v1 provides programmatic access to task management, projects, sections, labels, reminders, comments, workspaces, and more. Supports OAuth 2.0 and personal API tokens. Includes incremental sync via the /sync endpoint.
  version: '1.0'
  contact:
    name: Todoist Developer Support
    url: https://developer.todoist.com/
  termsOfService: https://doist.com/terms-of-service
  license:
    name: Todoist API Terms
    url: https://developer.todoist.com/
servers:
- url: https://api.todoist.com/api/v1
  description: Production
security:
- bearerAuth: []
tags:
- name: Comments
  description: Comment and note operations
paths:
  /comments:
    get:
      operationId: listComments
      summary: List Comments
      description: Returns all comments on a task or project.
      tags:
      - Comments
      parameters:
      - name: task_id
        in: query
        schema:
          type: string
      - name: project_id
        in: query
        schema:
          type: string
      responses:
        '200':
          description: List of comments
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Comment'
    post:
      operationId: createComment
      summary: Create Comment
      description: Creates a new comment on a task or project.
      tags:
      - Comments
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateCommentRequest'
      responses:
        '200':
          description: Created comment
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Comment'
  /comments/{id}:
    get:
      operationId: getComment
      summary: Get Comment
      description: Returns a single comment by ID.
      tags:
      - Comments
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Comment details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Comment'
    post:
      operationId: updateComment
      summary: Update Comment
      description: Updates a comment's content.
      tags:
      - Comments
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - content
              properties:
                content:
                  type: string
      responses:
        '200':
          description: Updated comment
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Comment'
    delete:
      operationId: deleteComment
      summary: Delete Comment
      description: Deletes a comment permanently.
      tags:
      - Comments
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
      responses:
        '204':
          description: Comment deleted
components:
  schemas:
    CreateCommentRequest:
      type: object
      required:
      - content
      properties:
        task_id:
          type: string
        project_id:
          type: string
        content:
          type: string
        attachment:
          type: object
    Comment:
      type: object
      properties:
        id:
          type: string
        task_id:
          type: string
        project_id:
          type: string
        posted_at:
          type: string
          format: date-time
        content:
          type: string
        attachment:
          type: object
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: Personal API token or OAuth 2.0 access token