Lemmy Site API

openapi: 3.1.0
info:
  title: Lemmy REST Account Site API
  description: The Lemmy REST API provides programmatic access to all core platform features of Lemmy, a free, open-source, self-hostable federated link aggregator and discussion platform. Developers can create and manage posts, comments, communities, and user accounts; vote on content; follow communities; search across the federated network; moderate communities; send private messages; and administer instances. Authentication uses JWT bearer tokens obtained via the login endpoint. The API is versioned at /api/v4/ and available on any public Lemmy instance.
  version: 4.0.0
  license:
    name: AGPL-3.0
    url: https://github.com/LemmyNet/lemmy/blob/main/LICENSE
  contact:
    url: https://join-lemmy.org/docs/
servers:
- url: https://lemmy.world/api/v4
  description: Lemmy.world (largest public instance)
- url: https://{instance}/api/v4
  description: Any Lemmy instance
  variables:
    instance:
      default: lemmy.world
      description: The hostname of a Lemmy instance
security:
- bearerAuth: []
tags:
- name: Site
  description: Site-level information and configuration
paths:
  /site:
    get:
      operationId: getSite
      summary: Get site information
      description: Returns site information including configuration, admins, and statistics.
      tags:
      - Site
      security: []
      responses:
        '200':
          description: Site information
          content:
            application/json:
              schema:
                type: object
                properties:
                  site_view:
                    type: object
                  admins:
                    type: array
                    items:
                      type: object
                  version:
                    type: string
                  my_user:
                    type: object
                    nullable: true
                  all_languages:
                    type: array
                    items:
                      type: object
                  discussion_languages:
                    type: array
                    items:
                      $ref: '#/components/schemas/LanguageId'
    post:
      operationId: createSite
      summary: Create the site
      description: Create the site (used during initial setup). Requires admin.
      tags:
      - Site
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - name
              properties:
                name:
                  type: string
                sidebar:
                  type: string
                  nullable: true
                description:
                  type: string
                  nullable: true
                icon:
                  type: string
                  nullable: true
                banner:
                  type: string
                  nullable: true
                enable_downvotes:
                  type: boolean
                  nullable: true
                enable_nsfw:
                  type: boolean
                  nullable: true
                community_creation_admin_only:
                  type: boolean
                  nullable: true
                require_email_verification:
                  type: boolean
                  nullable: true
                require_application:
                  type: boolean
                  nullable: true
                application_question:
                  type: string
                  nullable: true
                private_instance:
                  type: boolean
                  nullable: true
                default_theme:
                  type: string
                  nullable: true
                default_post_listing_type:
                  $ref: '#/components/schemas/ListingType'
                legal_information:
                  type: string
                  nullable: true
                default_post_sort_type:
                  $ref: '#/components/schemas/SortType'
      responses:
        '200':
          description: Site created
          content:
            application/json:
              schema:
                type: object
    put:
      operationId: editSite
      summary: Edit site settings
      description: Update site-level settings. Requires admin.
      tags:
      - Site
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                name:
                  type: string
                  nullable: true
                sidebar:
                  type: string
                  nullable: true
                description:
                  type: string
                  nullable: true
                enable_downvotes:
                  type: boolean
                  nullable: true
                enable_nsfw:
                  type: boolean
                  nullable: true
      responses:
        '200':
          description: Site updated
  /modlog:
    get:
      operationId: getModLog
      summary: Get moderation log
      description: Retrieve the moderation log for admin/mod actions.
      tags:
      - Site
      security: []
      parameters:
      - name: mod_person_id
        in: query
        schema:
          $ref: '#/components/schemas/PersonId'
      - name: community_id
        in: query
        schema:
          $ref: '#/components/schemas/CommunityId'
      - name: page
        in: query
        schema:
          type: integer
      - name: limit
        in: query
        schema:
          type: integer
      responses:
        '200':
          description: Moderation log entries
  /federated_instances:
    get:
      operationId: getFederatedInstances
      summary: Get federated instances
      description: Returns lists of instances that this instance federates with, blocks, or allows.
      tags:
      - Site
      security: []
      responses:
        '200':
          description: Federated instance lists
components:
  schemas:
    CommunityId:
      type: integer
      description: Unique identifier for a community
    ListingType:
      type: string
      enum:
      - All
      - Local
      - Subscribed
      - ModeratorView
    SortType:
      type: string
      enum:
      - Active
      - Hot
      - New
      - Old
      - TopDay
      - TopWeek
      - TopMonth
      - TopYear
      - TopAll
      - MostComments
      - NewComments
      - TopHour
      - TopSixHour
      - TopTwelveHour
      - TopThreeMonths
      - TopSixMonths
      - TopNineMonths
      - Controversial
      - Scaled
    LanguageId:
      type: integer
      description: Unique identifier for a language
    PersonId:
      type: integer
      description: Unique identifier for a person/user
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
externalDocs:
  description: Lemmy Documentation
  url: https://join-lemmy.org/docs/