openapi: 3.0.3
info:
  title: Metachan API
  description: |
    > **CAUTION**: I _do not_ provide pre-hosted instances of the MetaChan API. You will need to host your own instance of the API to use it. MetaChan is provided on an "as-is" basis and fetches data from various public sources and projects, some of which may have rate limits, restrictions, and even contain pirated content. The API is intended for personal use only and should not be used for commercial purposes. I do not take any responsibility for any legal issues that may arise from using the API. Please use it at your own risk. I _do not_ condone piracy or illegal distribution of content.

    
    # MetaChan
    ![MetaChan](https://i.redd.it/rg4mpacfm1wz.png)
    Welcome to **MetaChan**. MetaChan is an Anime and Manga metadata API that provides a RESTful interface for accessing metadata for various anime and manga titles. MetaChan best integrates with [MyAnimeList](https://myanimelist.net/) and uses **MAL IDs** as the primary identifier for anime and manga titles. [AniList](https://anilist.co/) is also supported partially and will reverse lookup MAL IDs.
    
  version: 1.0.0
  contact:
    name: API Support
    url: https://github.com/luciferreeves/metachan
  license:
    name: MIT
    url: https://opensource.org/licenses/MIT

tags:
  - name: health
    description: Health check and system status endpoints
  - name: anime
    description: Anime information endpoints
  - name: episodes
    description: Episode-specific endpoints
  - name: characters
    description: Character and voice actor endpoints

paths:
  /health:
    get:
      tags:
        - health
      summary: Get system health status
      description: Returns the current health status of the API including memory usage, database status, and running tasks
      operationId: getHealth
      responses:
        '200':
          description: Successful response with health status
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HealthStatus'
              example:
                $ref: './data.json#/health'

  /a/{id}:
    get:
      tags:
        - anime
      summary: Get anime details
      description: |
        Retrieves comprehensive information about an anime including metadata, episodes, characters, and streaming details.
        
        Supports both MyAnimeList (MAL) IDs and AniList IDs via the `provider` query parameter.
        - **Default**: Uses MAL ID
        - **With provider=anilist**: Uses AniList ID and reverse lookups MAL ID
      operationId: getAnime
      parameters:
        - name: id
          in: path
          required: true
          description: The anime ID (MAL ID by default, or AniList ID when provider=anilist)
          schema:
            type: integer
            example: 1
        - name: provider
          in: query
          required: false
          description: The ID provider type. Omit for MAL ID, use 'anilist' for AniList ID
          schema:
            type: string
            enum: [anilist]
            example: anilist
      responses:
        '200':
          description: Successful response with anime details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Anime'
              example:
                $ref: './data.json#/a~1id'
        '400':
          description: Bad request - Invalid or missing ID
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                error: "Query parameter MAL ID is required"
        '404':
          description: Anime not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                error: "Anime mapping not found"
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                error: "Failed to fetch anime details"

  /a/{id}/episodes:
    get:
      tags:
        - episodes
      summary: Get all episodes for an anime
      description: |
        Retrieves a list of all episodes for the specified anime, including metadata like titles, air dates, scores, and episode counts.
        
        The response includes both individual episode data and aggregate statistics (total, aired, subbed, dubbed counts).
        
        Supports both MyAnimeList (MAL) IDs and AniList IDs via the `provider` query parameter.
      operationId: getAnimeEpisodes
      parameters:
        - name: id
          in: path
          required: true
          description: The anime ID (MAL ID by default, or AniList ID when provider=anilist)
          schema:
            type: integer
            example: 1
        - name: provider
          in: query
          required: false
          description: The ID provider type. Omit for MAL ID, use 'anilist' for AniList ID
          schema:
            type: string
            enum: [anilist]
      responses:
        '200':
          description: Successful response with episodes list
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AnimeEpisodes'
              example:
                $ref: './data.json#/a~1id~1episodes'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Anime not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'

  /a/{id}/episodes/{episodeId}:
    get:
      tags:
        - episodes
      summary: Get single episode details
      description: |
        Retrieves detailed information about a specific episode including:
        - Episode metadata (titles, description, air date, scores)
        - Streaming sources for both subbed and dubbed versions
        - Filler/recap indicators
        
        Streaming data is cached for 7 days to improve performance.
        
        Supports both MyAnimeList (MAL) IDs and AniList IDs via the `provider` query parameter.
      operationId: getAnimeEpisode
      parameters:
        - name: id
          in: path
          required: true
          description: The anime ID (MAL ID by default, or AniList ID when provider=anilist)
          schema:
            type: integer
            example: 1
        - name: episodeId
          in: path
          required: true
          description: The unique episode ID (hash generated from episode titles)
          schema:
            type: string
            example: "a1b2c3d4e5f6"
        - name: provider
          in: query
          required: false
          description: The ID provider type. Omit for MAL ID, use 'anilist' for AniList ID
          schema:
            type: string
            enum: [anilist]
      responses:
        '200':
          description: Successful response with episode details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AnimeSingleEpisode'
              example:
                $ref: './data.json#/a~1id~1episodes~1episodeid'
        '400':
          description: Bad request - Invalid or missing parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                error: "Episode ID is required"
        '404':
          description: Episode not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              example:
                error: "Episode not found"
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'

  /a/{id}/characters:
    get:
      tags:
        - characters
      summary: Get anime characters
      description: |
        Retrieves a list of characters for the specified anime, including:
        - Character information (name, image, role)
        - Voice actors for each character
        - Voice actor languages
        
        Supports both MyAnimeList (MAL) IDs and AniList IDs via the `provider` query parameter.
      operationId: getAnimeCharacters
      parameters:
        - name: id
          in: path
          required: true
          description: The anime ID (MAL ID by default, or AniList ID when provider=anilist)
          schema:
            type: integer
            example: 1
        - name: provider
          in: query
          required: false
          description: The ID provider type. Omit for MAL ID, use 'anilist' for AniList ID
          schema:
            type: string
            enum: [anilist]
      responses:
        '200':
          description: Successful response with characters list
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/AnimeCharacter'
              example:
                $ref: './data.json#/a~1id~1characters'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Anime not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'

components:
  schemas:
    Error:
      type: object
      required:
        - error
      properties:
        error:
          type: string
          description: Error message describing what went wrong
          example: "Resource not found"

    HealthStatus:
      type: object
      properties:
        status:
          type: string
          example: "healthy"
        timestamp:
          type: string
          format: date-time
        uptime:
          type: string
          example: "2h 30m 15s"
        memory:
          $ref: '#/components/schemas/MemoryStats'
        database:
          $ref: '#/components/schemas/DatabaseStatus'
        tasks:
          type: object
          additionalProperties:
            $ref: '#/components/schemas/TaskStatus'

    MemoryStats:
      type: object
      properties:
        used:
          type: string
          example: "256 MB"
        total:
          type: string
          example: "512 MB"
        free:
          type: string
          example: "256 MB"
        usage:
          type: string
          example: "50.00%"

    DatabaseStatus:
      type: object
      properties:
        connected:
          type: boolean
        last_checked:
          type: string
          format: date-time

    TaskStatus:
      type: object
      properties:
        status:
          type: string
          enum: [idle, running, completed, failed]
        last_run:
          type: string
          format: date-time
        next_run:
          type: string
          format: date-time

    AnimeTitles:
      type: object
      properties:
        english:
          type: string
          example: "Cowboy Bebop"
        japanese:
          type: string
          example: "カウボーイビバップ"
        romaji:
          type: string
          example: "Cowboy Bebop"
        synonyms:
          type: array
          items:
            type: string

    AnimeImages:
      type: object
      properties:
        small:
          type: string
          format: uri
        large:
          type: string
          format: uri
        original:
          type: string
          format: uri

    AnimeLogos:
      type: object
      properties:
        small:
          type: string
          format: uri
        medium:
          type: string
          format: uri
        large:
          type: string
          format: uri
        xlarge:
          type: string
          format: uri
        original:
          type: string
          format: uri

    AnimeScores:
      type: object
      properties:
        score:
          type: number
          format: float
          example: 8.75
        scored_by:
          type: integer
          example: 150000
        rank:
          type: integer
          example: 42
        popularity:
          type: integer
          example: 150
        members:
          type: integer
          example: 500000
        favorites:
          type: integer
          example: 25000

    AiringStatus:
      type: object
      properties:
        from:
          $ref: '#/components/schemas/AiringDate'
        to:
          $ref: '#/components/schemas/AiringDate'
        string:
          type: string
          example: "Apr 3, 1998 to Apr 24, 1999"

    AiringDate:
      type: object
      properties:
        day:
          type: integer
        month:
          type: integer
        year:
          type: integer
        string:
          type: string

    AnimeBroadcast:
      type: object
      properties:
        day:
          type: string
          example: "Saturdays"
        time:
          type: string
          example: "01:00"
        timezone:
          type: string
          example: "JST"
        string:
          type: string
          example: "Saturdays at 01:00 (JST)"

    AnimeGenres:
      type: object
      properties:
        name:
          type: string
          example: "Action"
        genre_id:
          type: integer
        url:
          type: string
          format: uri

    AnimeProducer:
      type: object
      properties:
        name:
          type: string
        producer_id:
          type: integer
        url:
          type: string
          format: uri

    AnimeStudio:
      type: object
      properties:
        name:
          type: string
          example: "Sunrise"
        studio_id:
          type: integer
        url:
          type: string
          format: uri

    AnimeLicensor:
      type: object
      properties:
        name:
          type: string
        producer_id:
          type: integer
        url:
          type: string
          format: uri

    AnimeMappings:
      type: object
      description: External database IDs for cross-referencing
      properties:
        anidb:
          type: integer
        anilist:
          type: integer
        anime_countdown:
          type: integer
        anime_planet:
          type: string
        ani_search:
          type: integer
        imdb:
          type: string
        kitsu:
          type: integer
        live_chart:
          type: integer
        notify_moe:
          type: string
        simkl:
          type: integer
        tmdb:
          type: integer
        tvdb:
          type: integer

    AnimeAiringEpisode:
      type: object
      properties:
        airing_at:
          type: integer
          description: Unix timestamp
        episode:
          type: integer

    EpisodeTitles:
      type: object
      properties:
        english:
          type: string
        japanese:
          type: string
        romaji:
          type: string

    AnimeStreamingSource:
      type: object
      properties:
        url:
          type: string
          format: uri
          description: Direct streaming URL
        server:
          type: string
          description: Server/provider name
          example: "Maria"
        type:
          type: string
          enum: [HLS, MP4]
          description: Type of streaming link

    AnimeStreaming:
      type: object
      properties:
        sub:
          type: array
          items:
            $ref: '#/components/schemas/AnimeStreamingSource'
        dub:
          type: array
          items:
            $ref: '#/components/schemas/AnimeStreamingSource'

    AnimeSingleEpisode:
      type: object
      properties:
        id:
          type: string
          description: Unique episode identifier (hash)
        titles:
          $ref: '#/components/schemas/EpisodeTitles'
        description:
          type: string
        aired:
          type: string
        score:
          type: number
          format: float
        filler:
          type: boolean
        recap:
          type: boolean
        forum_url:
          type: string
          format: uri
        url:
          type: string
          format: uri
        thumbnail_url:
          type: string
          format: uri
        streaming:
          $ref: '#/components/schemas/AnimeStreaming'

    AnimeEpisodes:
      type: object
      properties:
        total:
          type: integer
          description: Total number of episodes
        aired:
          type: integer
          description: Number of aired episodes
        subbed:
          type: integer
          description: Number of subbed episodes available
        dubbed:
          type: integer
          description: Number of dubbed episodes available
        episodes:
          type: array
          items:
            $ref: '#/components/schemas/AnimeSingleEpisode'

    AnimeVoiceActor:
      type: object
      properties:
        id:
          type: integer
        url:
          type: string
          format: uri
        image_url:
          type: string
          format: uri
        name:
          type: string
        language:
          type: string
          example: "Japanese"

    AnimeCharacter:
      type: object
      properties:
        id:
          type: integer
        url:
          type: string
          format: uri
        image_url:
          type: string
          format: uri
        name:
          type: string
        role:
          type: string
          enum: [Main, Supporting]
        voice_actors:
          type: array
          items:
            $ref: '#/components/schemas/AnimeVoiceActor'

    AnimeSeason:
      type: object
      properties:
        id:
          type: integer
        titles:
          $ref: '#/components/schemas/AnimeTitles'
        synopsis:
          type: string
        type:
          type: string
          enum: [TV, OVA, Movie, Special, ONA, Music]
        source:
          type: string
        airing:
          type: boolean
        status:
          type: string
          enum: [Finished Airing, Currently Airing, Not yet aired]
        airing_status:
          $ref: '#/components/schemas/AiringStatus'
        duration:
          type: string
        images:
          $ref: '#/components/schemas/AnimeImages'
        scores:
          $ref: '#/components/schemas/AnimeScores'
        season:
          type: string
          enum: [winter, spring, summer, fall]
        year:
          type: integer
        current:
          type: boolean

    Anime:
      type: object
      properties:
        id:
          type: integer
          description: MyAnimeList ID
        titles:
          $ref: '#/components/schemas/AnimeTitles'
        synopsis:
          type: string
        type:
          type: string
          enum: [TV, OVA, Movie, Special, ONA, Music]
        source:
          type: string
        airing:
          type: boolean
        status:
          type: string
          enum: [Finished Airing, Currently Airing, Not yet aired]
        airing_status:
          $ref: '#/components/schemas/AiringStatus'
        duration:
          type: string
        images:
          $ref: '#/components/schemas/AnimeImages'
        logos:
          $ref: '#/components/schemas/AnimeLogos'
        covers:
          $ref: '#/components/schemas/AnimeImages'
        color:
          type: string
          description: Hex color code
        genres:
          type: array
          items:
            $ref: '#/components/schemas/AnimeGenres'
        scores:
          $ref: '#/components/schemas/AnimeScores'
        season:
          type: string
          enum: [winter, spring, summer, fall]
        year:
          type: integer
        broadcast:
          $ref: '#/components/schemas/AnimeBroadcast'
        producers:
          type: array
          items:
            $ref: '#/components/schemas/AnimeProducer'
        studios:
          type: array
          items:
            $ref: '#/components/schemas/AnimeStudio'
        licensors:
          type: array
          items:
            $ref: '#/components/schemas/AnimeLicensor'
        seasons:
          type: array
          items:
            $ref: '#/components/schemas/AnimeSeason'
        episodes:
          $ref: '#/components/schemas/AnimeEpisodes'
        next_airing_episode:
          $ref: '#/components/schemas/AnimeAiringEpisode'
        airing_schedule:
          type: array
          items:
            $ref: '#/components/schemas/AnimeAiringEpisode'
        characters:
          type: array
          items:
            $ref: '#/components/schemas/AnimeCharacter'
        mappings:
          $ref: '#/components/schemas/AnimeMappings'