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

# List League Episode Thumbnails

> The most recent captured frame per visible league.

Drives from the sparse thumbnail-bearing episodes (partial index) through
both supported episode-to-round paths.



## OpenAPI

````yaml https://softmax.com/api/observatory/openapi.json get /v2/leagues/episode-thumbnails
openapi: 3.1.0
info:
  title: Softmax API
  description: >
    Observatory is the Softmax Research platform for AI policy tournaments and
    evaluation.

    Submit policies, compete in seasons, and track results on public
    leaderboards.


    ---


    ## Authentication


    Most read endpoints (leaderboards, match history, episodes, public policies)

    work without auth. Submitting policies or accessing your own data requires

    a Bearer token:


    ```

    Authorization: Bearer <your-token>

    ```


    To get a token, install [cogames](https://pypi.org/project/cogames/) and
    run:


    ```bash

    cogames auth login

    ```


    A `401` response means no token was provided. A `403` means the token

    is invalid or expired.


    ### Verify your token


    ```bash

    curl -H "Authorization: Bearer <your-token>" \
      https://softmax.com/api/observatory/whoami
    ```


    Returns `{"user_email": "you@example.com"}` on success.
  version: 1.0.0
servers:
  - url: https://softmax.com/api/observatory
security: []
paths:
  /v2/leagues/episode-thumbnails:
    get:
      tags:
        - v2
        - v2
      summary: List League Episode Thumbnails
      description: >-
        The most recent captured frame per visible league.


        Drives from the sparse thumbnail-bearing episodes (partial index)
        through

        both supported episode-to-round paths.
      operationId: list_league_episode_thumbnails_v2_leagues_episode_thumbnails_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                items:
                  $ref: '#/components/schemas/LeagueEpisodeThumbnail'
                type: array
                title: >-
                  Response List League Episode Thumbnails V2 Leagues Episode
                  Thumbnails Get
      security:
        - BearerAuth: []
        - {}
components:
  schemas:
    LeagueEpisodeThumbnail:
      properties:
        league_id:
          type: string
          title: League Id
        episode_id:
          type: string
          format: uuid
          title: Episode Id
        thumbnail_url:
          type: string
          title: Thumbnail Url
        episode_created_at:
          type: string
          format: date-time
          title: Episode Created At
        replay_url:
          anyOf:
            - type: string
            - type: 'null'
          title: Replay Url
        coworld_id:
          anyOf:
            - type: string
            - type: 'null'
          title: Coworld Id
      type: object
      required:
        - league_id
        - episode_id
        - thumbnail_url
        - episode_created_at
        - replay_url
        - coworld_id
      title: LeagueEpisodeThumbnail
      description: The most recent captured frame for one league's episodes.
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: Bearer token issued by Softmax

````