> ## 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. # Detect privileged content > Analyzes text or vault documents for legal privilege review. Detects attorney-client privilege, work product doctrine, and common interest privilege. Returns structured review flags with confidence scores and policy-friendly rationale suitable for discovery workflows and privilege logs. This endpoint is an AI-assisted triage tool and does not replace attorney judgment. **Size Limit:** Maximum 200,000 characters (larger documents rejected). **Permissions:** Requires `chat` permission. When using `document_id`, also requires `vault` permission. **Note:** When analyzing vault documents, results are automatically stored in the document's `privilege_analysis` metadata field. ## OpenAPI ````yaml /openapi.json post /privilege/v1/detect 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: /privilege/v1/detect: post: tags: - Privilege summary: Detect privileged content description: >- Analyzes text or vault documents for legal privilege review. Detects attorney-client privilege, work product doctrine, and common interest privilege. Returns structured review flags with confidence scores and policy-friendly rationale suitable for discovery workflows and privilege logs. This endpoint is an AI-assisted triage tool and does not replace attorney judgment. **Size Limit:** Maximum 200,000 characters (larger documents rejected). **Permissions:** Requires `chat` permission. When using `document_id`, also requires `vault` permission. **Note:** When analyzing vault documents, results are automatically stored in the document's `privilege_analysis` metadata field. operationId: detectPrivilege requestBody: required: true content: application/json: schema: type: object properties: content: type: string description: >- Text content to analyze (required if document_id not provided) document_id: type: string description: >- Vault object ID to analyze (required if content not provided) vault_id: type: string description: Vault ID (required when using document_id) categories: type: array items: type: string enum: - attorney_client - work_product - common_interest description: >- Privilege categories to check. Defaults to all: attorney_client, work_product, common_interest jurisdiction: type: string enum: - US-Federal default: US-Federal description: Jurisdiction for privilege rules include_rationale: type: boolean default: true description: Include detailed rationale for each category model: type: string default: casemark/core-large description: LLM model to use for analysis responses: '200': description: Privilege analysis completed content: application/json: schema: type: object required: - privileged - confidence - categories - recommendation - policy_rationale properties: privileged: type: boolean description: Whether any privilege was detected confidence: type: number minimum: 0 maximum: 1 description: Overall confidence score (0-1) categories: type: array items: type: object properties: type: type: string description: Privilege category detected: type: boolean description: Whether this privilege type was detected confidence: type: number description: Confidence for this category (0-1) rationale: type: string description: Explanation of detection result indicators: type: array items: type: string description: Specific phrases or patterns found recommendation: type: string enum: - withhold - redact - produce - review description: Recommended action for discovery policy_rationale: type: string description: Policy-friendly explanation for privilege log '400': description: >- Invalid request - missing content/document_id or content exceeds size limit '401': description: Invalid API key '403': description: API key does not have access to chat service '404': description: Vault or document not found components: securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: API Key description: API key starting with `sk_case_` ````