> ## 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. # Generate AI-powered answers from web search > Generate comprehensive answers to questions using web search results. Supports two modes: native provider answers or custom LLM-powered answers using Case.dev's AI gateway. Perfect for legal research, fact-checking, and gathering supporting evidence for cases. ## OpenAPI ````yaml /openapi.json post /search/v1/answer 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: /search/v1/answer: post: tags: - Search summary: Generate AI-powered answers from web search description: >- Generate comprehensive answers to questions using web search results. Supports two modes: native provider answers or custom LLM-powered answers using Case.dev's AI gateway. Perfect for legal research, fact-checking, and gathering supporting evidence for cases. operationId: generateAnswer requestBody: description: Answer generation configuration required: true content: application/json: schema: type: object required: - query properties: query: type: string description: The question or topic to research and answer useCustomLLM: type: boolean description: >- Use Case.dev LLM for answer generation instead of provider's native answer default: false model: type: string description: LLM model to use when useCustomLLM is true default: gpt-4o searchType: type: string enum: - auto - web - news - academic description: Type of search to perform default: auto numResults: type: integer description: Number of search results to consider minimum: 1 maximum: 50 default: 10 includeDomains: type: array items: type: string description: Only search within these domains excludeDomains: type: array items: type: string description: Exclude these domains from search temperature: type: number description: LLM temperature for answer generation minimum: 0 maximum: 2 default: 0.3 maxTokens: type: integer description: Maximum tokens for LLM response default: 2048 text: type: boolean description: Include text content in response default: true stream: type: boolean description: Stream the response (only for native provider answers) default: false responses: '200': description: Answer generated successfully content: application/json: schema: type: object properties: answer: type: string description: The generated answer with citations citations: type: array items: type: object properties: id: type: string url: type: string title: type: string publishedDate: type: string text: type: string description: Sources used to generate the answer model: type: string description: Model used for answer generation searchType: type: string description: Type of search performed '400': description: Invalid request - missing query or validation error '401': description: Invalid API key '403': description: API key does not have access to Search service components: securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: API Key description: API key starting with `sk_case_` ````