> ## 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.

# Get Bulk Upload Presigned Url



## OpenAPI

````yaml /api-reference/observatory-openapi.json post /stats/episodes/bulk_upload/presigned-url
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
    description: softmax.com (data API under /observatory)
  - url: https://api.observatory.softmax-research.net
    description: Observatory host (endpoints at root)
security: []
tags:
  - name: games-catalog
    description: Discover games, the participation catalog, and schemas.
    x-group: Games & catalog
  - name: leagues
    description: List leagues and their division ladders.
    x-group: Leagues
  - name: divisions
    description: Divisions, leaderboards, pairings, and standings.
    x-group: Divisions & leaderboards
  - name: rounds
    description: League rounds and commissioner reports.
    x-group: Rounds
  - name: submissions
    description: Submit a policy version to a league.
    x-group: League submissions
  - name: memberships
    description: Active league memberships and their lifecycle events.
    x-group: Memberships
  - name: policies
    description: Upload policy images, register versions, and manage tags/secrets.
    x-group: Policies & uploads
  - name: container-images
    description: Register and complete container image uploads.
    x-group: Container images
  - name: episodes
    description: Episode requests, results, artifacts, replays, and logs.
    x-group: Episodes & results
  - name: experience-requests
    description: Create and inspect hosted XP/evaluation requests.
    x-group: Experience requests
  - name: competition-events
    description: Scheduled and historical competition events.
    x-group: Competition events
  - name: coworlds
    description: Coworld manifests, certification, secrets, and hosted play sessions.
    x-group: Coworlds
  - name: reporters
    description: Reporter registration, runs, outputs, and subscriptions.
    x-group: Reporters
  - name: posts
    description: The Observatory social feed.
    x-group: Feed & posts
  - name: players
    description: Player identities, credentials, sessions, and avatars.
    x-group: Players
paths:
  /stats/episodes/bulk_upload/presigned-url:
    post:
      tags:
        - policies
      summary: Get Bulk Upload Presigned Url
      operationId: >-
        get_bulk_upload_presigned_url_stats_episodes_bulk_upload_presigned_url_post
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PresignedUploadUrlResponse'
      security:
        - BearerAuth: []
components:
  schemas:
    PresignedUploadUrlResponse:
      properties:
        upload_url:
          type: string
          title: Upload Url
        s3_key:
          type: string
          title: S3 Key
        upload_id:
          type: string
          format: uuid
          title: Upload Id
      type: object
      required:
        - upload_url
        - s3_key
        - upload_id
      title: PresignedUploadUrlResponse
      description: Response containing presigned URL for direct S3 upload.
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: Bearer token issued by Softmax

````