Canvas LMS Discussions API

openapi: 3.1.0
info:
  title: Canvas LMS REST Accounts Discussions API
  description: 'The Canvas LMS REST API exposes the full learning-management surface — accounts, courses,

    enrollments, users, assignments, submissions, grades, outcomes, quizzes, modules, pages,

    discussions, files, conversations, calendar events, planner, and more — via

    `/api/v1` on any Canvas install (Free for Teacher at canvas.instructure.com,

    Canvas Cloud, or self-hosted).


    Authentication uses OAuth2 (RFC 6749). Tokens are issued via the

    `/login/oauth2/auth` and `/login/oauth2/token` endpoints; clients must be

    registered as a Developer Key in the target Canvas account. Manual personal

    access tokens may be created from a user''s profile for testing only.


    Pagination follows RFC 5988 with `Link` response headers (`rel="next"`,

    `"prev"`, `"first"`, `"last"`). Includes can be requested via the

    `include[]` query parameter on most resources. Admin users may impersonate

    other users by appending `as_user_id={id}` (Masquerading).


    This OpenAPI document covers the most-used endpoints across Accounts,

    Courses, Enrollments, Users, Assignments, Submissions, Modules, Discussions,

    Files, and Outcomes. The full surface (190+ resource groups) is documented

    at https://canvas.instructure.com/doc/api/all_resources.html and generated

    in the canvas-lms repo via `rake doc:openapi`.

    '
  version: '1.0'
  contact:
    name: Canvas Developer Community
    url: https://community.canvaslms.com/t5/Canvas-Developers-Group/gh-p/canvas-developers
  license:
    name: AGPL-3.0
    identifier: AGPL-3.0-or-later
  x-logo:
    url: https://www.instructure.com/sites/default/files/image/2021-12/Canvas_logo_single_mark.png
servers:
- url: https://{canvas_host}/api/v1
  description: Canvas REST API on any Canvas install
  variables:
    canvas_host:
      default: canvas.instructure.com
      description: The Canvas host (canvas.instructure.com for Free for Teacher, your-school.instructure.com for Canvas Cloud, or your self-hosted Canvas)
security:
- OAuth2: []
- BearerAuth: []
tags:
- name: Discussions
  description: Discussion topics and entries
paths:
  /courses/{course_id}/discussion_topics:
    get:
      summary: List Discussion Topics in a Course
      operationId: listDiscussionTopics
      tags:
      - Discussions
      parameters:
      - $ref: '#/components/parameters/CourseId'
      - name: include[]
        in: query
        schema:
          type: array
          items:
            type: string
            enum:
            - all_dates
            - sections
            - sections_user_count
            - overrides
      - name: order_by
        in: query
        schema:
          type: string
          enum:
          - position
          - recent_activity
          - title
      responses:
        '200':
          description: A paginated list of discussion topics
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/DiscussionTopic'
components:
  parameters:
    CourseId:
      name: course_id
      in: path
      required: true
      description: The Canvas course ID or an SIS course ID prefixed `sis_course_id:`.
      schema:
        type: string
  schemas:
    DiscussionTopic:
      type: object
      properties:
        id:
          type: integer
        title:
          type: string
        message:
          type: string
          nullable: true
        html_url:
          type: string
        posted_at:
          type: string
          format: date-time
          nullable: true
        last_reply_at:
          type: string
          format: date-time
          nullable: true
        require_initial_post:
          type: boolean
        user_can_see_posts:
          type: boolean
        discussion_subentry_count:
          type: integer
        read_state:
          type: string
          enum:
          - read
          - unread
        unread_count:
          type: integer
        subscribed:
          type: boolean
        assignment_id:
          type: integer
          nullable: true
        delayed_post_at:
          type: string
          format: date-time
          nullable: true
        published:
          type: boolean
        lock_at:
          type: string
          format: date-time
          nullable: true
        locked:
          type: boolean
        pinned:
          type: boolean
        locked_for_user:
          type: boolean
        discussion_type:
          type: string
          enum:
          - side_comment
          - threaded
          - not_threaded
        position:
          type: integer
          nullable: true
        allow_rating:
          type: boolean
        only_graders_can_rate:
          type: boolean
        sort_by_rating:
          type: boolean
        is_announcement:
          type: boolean
  securitySchemes:
    OAuth2:
      type: oauth2
      description: Canvas OAuth2 (RFC 6749) authorization code grant. Register a Developer Key in the target Canvas account to obtain a client_id and client_secret.
      flows:
        authorizationCode:
          authorizationUrl: https://canvas.instructure.com/login/oauth2/auth
          tokenUrl: https://canvas.instructure.com/login/oauth2/token
          refreshUrl: https://canvas.instructure.com/login/oauth2/token
          scopes:
            url:GET|/api/v1/accounts: Read accounts
            url:GET|/api/v1/courses: Read courses
            url:GET|/api/v1/users/{user_id}: Read a user
    BearerAuth:
      type: http
      scheme: bearer
      description: A Canvas access token. For testing only — production apps MUST use the OAuth2 flow per the Canvas API Policy.