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

# Batch upload files (Multipart)

> Upload multiple files via multipart form, identified by their content hashes.



## OpenAPI

````yaml https://dev.hub.oxen.ai/api/_spec/oxen_server_openapi.json post /api/repos/{namespace}/{repo_name}/versions
openapi: 3.1.0
info:
  description: >-
    Oxen is a fast, unstructured data version control, to help version large
    machine learning datasets written in Rust.
  license:
    name: ''
  title: oxen-server
  version: 0.50.0
servers:
  - description: Production API
    url: https://hub.oxen.ai
  - description: Local Development
    url: http://localhost:3000
security:
  - api_key: []
tags:
  - description: Namespace management endpoints
    name: Namespaces
  - description: Repository management endpoints.
    name: Repositories
paths:
  /api/repos/{namespace}/{repo_name}/versions:
    post:
      tags:
        - Version Files
      summary: Batch upload files (Multipart)
      description: >-
        Upload multiple files via multipart form, identified by their content
        hashes.
      operationId: batch_upload
      parameters:
        - description: The namespace of the repository
          example: ox
          in: path
          name: namespace
          required: true
          schema:
            type: string
        - description: The name of the repository
          example: ImageNet-1k
          in: path
          name: repo_name
          required: true
          schema:
            type: string
      requestBody:
        content:
          multipart/form-data:
            schema:
              $ref: '#/components/schemas/UploadVersionFile'
        description: >-
          Multipart upload of files. Each form field 'file[]' or 'file' should
          contain the file content (optionally gzip compressed), and the
          filename should be the content hash (e.g., 'file.jpg' is not used, the
          hash is the identifier).
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorFilesResponse'
          description: Files successfully uploaded (check err_files for failures)
        '400':
          description: Invalid multipart request
        '404':
          description: Repository not found
components:
  schemas:
    UploadVersionFile:
      properties:
        file:
          format: binary
          type: string
      required:
        - file
      type: object
    ErrorFilesResponse:
      allOf:
        - $ref: '#/components/schemas/StatusMessage'
        - properties:
            err_files:
              items:
                $ref: '#/components/schemas/ErrorFileInfo'
              type: array
          type: object
    StatusMessage:
      properties:
        oxen_version:
          type:
            - string
            - 'null'
        status:
          type: string
        status_message:
          type: string
      required:
        - status
        - status_message
      type: object
    ErrorFileInfo:
      properties:
        error:
          type: string
        hash:
          type: string
        path:
          type:
            - string
            - 'null'
      required:
        - hash
        - error
      type: object
  securitySchemes:
    api_key:
      bearerFormat: JWT
      scheme: bearer
      type: http

````