> ## 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. # Append PDF vault objects onto an existing PDF vault object > Merges one or more PDF vault objects onto the end of an existing PDF vault object, overwriting the target in place before returning. Optionally rewrites citation links in the original target into internal PDF jumps and adds back links on appended pages. The target object’s ingestion state is not affected; appended pages are not searchable. ## OpenAPI ````yaml /openapi.json post /vault/{id}/objects/{objectId}/append 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}/objects/{objectId}/append: post: tags: - Vaults summary: Append PDF vault objects onto an existing PDF vault object description: >- Merges one or more PDF vault objects onto the end of an existing PDF vault object, overwriting the target in place before returning. Optionally rewrites citation links in the original target into internal PDF jumps and adds back links on appended pages. The target object’s ingestion state is not affected; appended pages are not searchable. operationId: appendVaultObject parameters: - name: id in: path required: true schema: type: string description: Vault ID - name: objectId in: path required: true schema: type: string description: ID of the vault object to append onto requestBody: required: true content: application/json: schema: type: object required: - appendObjectIds properties: appendObjectIds: type: array minItems: 1 maxItems: 20 items: type: string description: >- Vault object IDs whose pages will be appended onto the target object, in order. Must not include the target object itself. rewriteLinks: type: boolean default: false description: >- When true, rewrites links in the target object to internal PDF jumps when the URL contains exactly one appended object ID as a standalone query parameter value or decoded path segment. backLinks: type: boolean default: false description: Adds back links on appended pages backLinksText: type: string default: Back to Summary maxLength: 120 description: >- Label text for the back link. Used only when backLinks is true and rendered centered at the bottom of each appended page. bates: type: object description: >- Optional Bates stamping for appended source PDFs. Numbering is deterministic across appendObjectIds order and does not stamp the target report pages. properties: enabled: type: boolean default: true prefix: type: string default: '' maxLength: 40 suffix: type: string default: '' maxLength: 20 start: type: integer default: 1 minimum: 1 padTo: type: integer default: 0 minimum: 0 maximum: 12 responses: '200': description: Target object updated successfully content: application/json: schema: type: object properties: id: type: string vaultId: type: string filename: type: string contentType: type: string sizeBytes: type: integer checksum: type: string ingestionStatus: type: string pageCount: type: integer objectId: type: string bates: type: object metadata: type: object downloadUrl: type: string expiresIn: type: integer createdAt: type: string format: date-time '400': description: Invalid request body or unsupported source object format '401': description: Authentication failed - invalid API key '403': description: Access denied - API key lacks vault service permissions '404': description: Vault, target object, or one or more append objects were not found '409': description: Target object is being ingested or deleted components: securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: API Key description: API key starting with `sk_case_` ````