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

# Get presigned URLs for multipart upload parts

> Generate presigned URLs for individual multipart upload parts (live).



## OpenAPI

````yaml /openapi.json post /vault/{id}/multipart/part-urls
openapi: 3.1.0
info:
  title: Case.dev API
  description: >-
    The AI-native platform for legal technology. Build smarter legal
    applications with our suite of AI-powered APIs.
  version: 1.0.0
  contact:
    name: Case.dev Support
    email: support@casemark.com
    url: https://case.dev
  license:
    name: Proprietary
    url: https://case.dev/terms
servers:
  - url: https://api.case.dev
    description: Production
security:
  - bearerAuth: []
tags:
  - name: Vaults
    description: Secure document storage with semantic search and GraphRAG
  - name: Memory
    description: >-
      Persistent memory for AI agents with semantic search and 12 generic
      indexed tag fields
  - name: OCR
    description: Extract text from PDFs, images, and scanned documents
  - name: Voice
    description: Audio transcription and text-to-speech
  - name: LLMs
    description: Access 40+ language models through a unified API
  - name: Search
    description: Web search, AI answers, and deep research
  - name: Mail
    description: Managed inboxes for agent email workflows
  - name: Media
    description: Transcript retrieval and captioned media clip generation
  - name: Legal
    description: Legal research tools including citation verification
  - name: Privilege
    description: Privilege detection for e-discovery and litigation workflows
  - name: Compute
    description: Serverless GPU and CPU infrastructure
  - name: Format
    description: Document formatting and template rendering (MD/JSON to PDF/DOCX)
  - name: SuperDoc
    description: Document conversion and template automation
  - name: Webhooks
    description: Webhook endpoint management
  - name: System
    description: Public system metadata and discovery endpoints
  - name: Usage
    description: Usage reporting and webhook subscriptions
  - name: Database
    description: Serverless PostgreSQL databases with instant branching
  - name: Translation
    description: Language detection and translation for multilingual legal workflows
  - name: Skills
    description: Search and read legal AI skills for agents
  - name: Agents
    description: >-
      Create, manage, and execute AI agents with tool access, sandbox
      environments, and async run workflows
  - name: Matters
    description: Matter-native legal workspaces and orchestration primitives
  - name: Applications Projects
    description: Web application project management
  - name: Applications Deployments
    description: Web application deployment management
  - name: Applications Domains
    description: Custom domain configuration for applications
  - name: Applications Env Vars
    description: Environment variable management for applications
paths:
  /vault/{id}/multipart/part-urls:
    post:
      tags:
        - Vaults
      summary: Get presigned URLs for multipart upload parts
      description: Generate presigned URLs for individual multipart upload parts (live).
      operationId: getVaultMultipartPartUrls
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: Vault ID
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - objectId
                - uploadId
                - parts
              properties:
                objectId:
                  type: string
                  description: Vault object ID associated with the multipart upload
                uploadId:
                  type: string
                  description: Multipart upload ID returned when the upload was initialized
                parts:
                  type: array
                  description: Multipart parts that need presigned upload URLs
                  items:
                    type: object
                    required:
                      - partNumber
                      - sizeBytes
                    properties:
                      partNumber:
                        type: integer
                        minimum: 1
                        description: 1-based multipart part number
                      sizeBytes:
                        type: integer
                        minimum: 1
                        maximum: 5368709120
                        description: >-
                          Part size in bytes (min 5MB except final part, max
                          5GB).
      responses:
        '200':
          description: Multipart part URLs generated successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  urls:
                    type: array
                    items:
                      type: object
                      properties:
                        partNumber:
                          type: integer
                        url:
                          type: string
        '400':
          description: >-
            Multipart upload request is invalid or does not match stored upload
            metadata
        '401':
          description: Invalid API key
        '403':
          description: API key does not have write access to vault service
        '404':
          description: Vault or vault object not found
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key
      description: API key starting with `sk_case_`

````