> ## Documentation Index > Fetch the complete documentation index at: https://docs.valyu.ai/llms.txt > Use this file to discover all available pages before exploring further. # Update Task > Reference for adding follow-up instructions to a running task via POST /v1/deepresearch/tasks/\{id\}/update. ## OpenAPI ````yaml POST /v1/deepresearch/tasks/{id}/update openapi: 3.0.3 info: title: Valyu API version: 2.2.0 description: > The search API built for AI agents. One API that gives your AI unified access to web search, academic papers, financial data, SEC filings, clinical trials, patents, and 36+ proprietary data sources. ## Products | Product | Endpoint | Description | | --- | --- | --- | | **Search** | `POST /v1/search` | Multi-source search across web and proprietary datasets | | **Contents** | `POST /v1/contents` | Extract clean, structured content from URLs | | **Answer** | `POST /v1/answer` | AI-powered answers with real-time search | | **DeepResearch** | `POST /v1/deepresearch/tasks` | Async research agents for comprehensive analysis | | **Datasources** | `GET /v1/datasources` | Discover available data sources and their schemas | ## Authentication All endpoints require an API key passed via the `X-API-Key` header. Get your key at [platform.valyu.ai](https://platform.valyu.ai). ``` X-API-Key: your_api_key_here ``` ## Pricing Valyu uses transparent, pay-per-use pricing: - **Search**: CPM-based (cost per mille tokens retrieved) - **Contents**: $0.001 per URL extracted, +$0.001 with AI features - **Answer**: $0.10 per request + variable search and AI costs - **DeepResearch**: Fixed per-task pricing by mode ($0.10 - $15.00) See [docs.valyu.ai](https://docs.valyu.ai) for full pricing details. ## SDKs - [Python SDK](https://pypi.org/project/valyu/) - `pip install valyu` - [TypeScript SDK](https://www.npmjs.com/package/valyu) - `npm install valyu` contact: name: Valyu Support url: https://valyu.ai email: support@valyu.ai x-logo: url: https://valyu.ai/logo.png altText: Valyu servers: - url: https://api.valyu.ai description: Production security: - ApiKeyAuth: [] tags: - name: Search description: >- Search across web, academic, financial, and proprietary data sources. Returns results ready for RAG pipelines, AI agents, and applications. externalDocs: description: Search API Guide url: https://docs.valyu.ai/search/quickstart - name: Contents description: >- Extract clean, structured content from web pages at scale. Supports batch processing, AI-powered summaries, structured extraction via JSON schemas, and async jobs for large URL sets. externalDocs: description: Contents API Guide url: https://docs.valyu.ai/guides/content-extraction - name: Answer description: >- Get AI-powered answers grounded in real-time search results. The Answer API searches across web, academic, and financial sources, then uses AI to generate a readable response via Server-Sent Events streaming. externalDocs: description: Answer API Guide url: https://docs.valyu.ai/guides/answer-api - name: DeepResearch description: >- Async research agents that perform comprehensive, multi-step research. DeepResearch searches multiple sources, analyzes content, and generates detailed reports with citations. Tasks run in the background and can take minutes to complete. externalDocs: description: DeepResearch Guide url: https://docs.valyu.ai/guides/deepresearch - name: Batches description: >- Run multiple DeepResearch tasks in parallel with shared configuration, unified monitoring, and aggregated cost tracking. externalDocs: description: Batch API Guide url: https://docs.valyu.ai/guides/deepresearch-batch-quickstart - name: Datasources description: >- Discover available data sources and their schemas. A tool manifest for AI agents - instead of hardcoding knowledge of available datasets, agents can query this API to discover sources, filter by category, and use `example_queries` for few-shot prompting. externalDocs: description: Datasources Guide url: https://docs.valyu.ai/guides/datasources externalDocs: description: Complete API Documentation url: https://docs.valyu.ai paths: /v1/deepresearch/tasks/{id}/update: post: tags: - DeepResearch summary: Add a follow-up instruction to a running task description: >- Send a follow-up instruction to a running DeepResearch task. The instruction can only be added before the writing phase begins. Use this to steer the research in a specific direction based on intermediate findings. operationId: updateDeepResearch parameters: - name: id in: path required: true schema: type: string description: DeepResearch task ID. requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/DeepResearchUpdateRequest' examples: Add Instruction: summary: Add follow-up instruction value: instruction: Also compare the safety profiles across all trials responses: '200': description: Instruction added successfully. content: application/json: schema: $ref: '#/components/schemas/DeepResearchUpdateResponse' examples: success: summary: Task updated value: success: true message: Task updated successfully deepresearch_id: a1b2c3d4-e5f6-7890-abcd-ef1234567890 '400': description: >- Task is not in a state that accepts updates (writing phase has started or task is not running). content: application/json: schema: $ref: '#/components/schemas/Error' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': $ref: '#/components/responses/NotFound' '500': $ref: '#/components/responses/InternalServerError' components: schemas: DeepResearchUpdateRequest: type: object required: - instruction additionalProperties: false description: >- Follow-up instruction to guide a running research task. Can only be sent before the writing phase begins. properties: instruction: type: string description: Follow-up instruction for the research agent. example: Also compare the safety profiles across all trials DeepResearchUpdateResponse: type: object required: - success - message - deepresearch_id properties: success: type: boolean description: Whether the operation succeeded. example: true message: type: string description: Human-readable status message. example: Instruction added deepresearch_id: type: string description: ID of the affected task. example: a1b2c3d4-e5f6-7890-abcd-ef1234567890 Error: type: object description: Standard error response. required: - success - error properties: success: type: boolean description: Always `false` for error responses. example: false error: type: string description: Human-readable error message describing what went wrong. example: Invalid request parameters responses: Unauthorized: description: Missing or invalid API key. content: application/json: schema: $ref: '#/components/schemas/Error' examples: example: summary: Invalid API key value: success: false error: Invalid API key Forbidden: description: The API key does not have permission for this operation. content: application/json: schema: $ref: '#/components/schemas/Error' examples: example: summary: Permission denied value: success: false error: API key does not have inference permission NotFound: description: The requested resource was not found. content: application/json: schema: $ref: '#/components/schemas/Error' examples: example: summary: Resource not found value: success: false error: Task not found InternalServerError: description: An unexpected error occurred on the server. content: application/json: schema: $ref: '#/components/schemas/Error' examples: example: summary: Internal error value: success: false error: Internal server error. Please try again later. securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-API-Key description: >- API key for authentication. Get yours at [platform.valyu.ai](https://platform.valyu.ai). ````