> ## Documentation Index > Fetch the complete documentation index at: https://aisa.one/docs/llms.txt > Use this file to discover all available pages before exploring further. # Exa Search > Search the web by meaning rather than by keyword. Search the web by meaning rather than by keyword. `query` is required; narrow with `category`, `includeDomains`, `excludeDomains`, `startPublishedDate`, `endPublishedDate`, and set `numResults`. Returns `requestId`, `resolvedSearchType`, `searchTime`, `costDollars` and `results[]` with `id`, `title` and `url`. **`id` is the URL**, and it is what [`post_exa_contents`](/docs/api-reference/search/post_exa-contents) takes. Measured at 1.4 seconds — the fastest search here. Billed at a flat rate per successful request. ⚠️ Results carry **no page text** unless you ask: pass `contents`, or follow up with [`post_exa_contents`](/docs/api-reference/search/post_exa-contents). Choose it over [`post_tavily_search`](/docs/api-reference/search/post_tavily-search) when the query is a description rather than keywords; choose Tavily when you want the text in the same call, and [`post_exa_answer`](/docs/api-reference/search/post_exa-answer) when you want a written answer rather than a list. **First time?** Point any MCP client at `https://mcp.aisa.one/mcp` — Claude Code, Codex, Cursor, VS Code and the rest. Authorization is OAuth: the client opens a browser, you click Allow once, and there is no key to paste. The commands per client, and what each call costs, are on [aisa.one/mcp](https://aisa.one/mcp#connect). [Set this endpoint up in your agent →](https://aisa.one/mcp?from=/api-reference/search/post_exa-search) ## OpenAPI ````yaml openapi/exa.json POST /exa/search openapi: 3.0.0 info: title: Exa API version: 1.0.0 description: >- Unified API documentation for Exa neural semantic search endpoints exposed through the AIsa gateway: Search, Contents, Answer, and the asynchronous research Agent Runs. Search, Contents, and Answer are synchronous and billed at a flat rate per successful request. Agent Runs is asynchronous: the caller submits a run and then polls the returned job resource for status and results, billed at a flat rate per run. Upstream 4xx responses (for example 401/403/404) are not billed. The `costDollars` field that Exa returns is the upstream cost breakdown and is informational only — customer billing follows the flat AIsa prices above. servers: - url: https://api.aisa.one/apis/v1 security: - bearerAuth: [] paths: /exa/search: post: tags: - https://docs.exa.ai/reference/search summary: Run a neural semantic web search. description: >- Search the web by meaning rather than by keyword. `query` is required; narrow with `category`, `includeDomains`, `excludeDomains`, `startPublishedDate`, `endPublishedDate`, and set `numResults`. Returns `requestId`, `resolvedSearchType`, `searchTime`, `costDollars` and `results[]` with `id`, `title` and `url`. **`id` is the URL**, and it is what `post_exa_contents` takes. Measured at 1.4 seconds — the fastest search here. Billed at a flat rate per successful request. ⚠️ Results carry **no page text** unless you ask: pass `contents`, or follow up with `post_exa_contents`. Choose it over `post_tavily_search` when the query is a description rather than keywords; choose Tavily when you want the text in the same call, and `post_exa_answer` when you want a written answer rather than a list. operationId: post_exa_search requestBody: required: true content: application/json: schema: type: object properties: query: type: string description: The natural-language search query. example: latest evaluation frameworks for AI agents type: type: string enum: - auto - fast - instant - deep-lite - deep - deep-reasoning default: auto description: >- Search mode. auto lets Exa choose; the deep modes trade latency for higher-quality retrieval. numResults: type: integer minimum: 1 maximum: 100 default: 10 description: Number of results to return. category: type: string enum: - company - research paper - news - personal site - financial report - people description: Optional hint about the kind of pages to prioritize. includeDomains: type: array items: type: string description: Only return results from these domains. excludeDomains: type: array items: type: string description: Exclude results from these domains. startPublishedDate: type: string format: date-time description: >- Only return results published on or after this ISO 8601 date. endPublishedDate: type: string format: date-time description: >- Only return results published on or before this ISO 8601 date. contents: type: object description: Content options to return alongside each result. properties: text: type: boolean description: Return the full page text. highlights: type: boolean description: Return highlighted relevant snippets. summary: type: boolean description: Return an AI-generated summary of the page. outputSchema: type: object description: >- JSON Schema used to synthesize a structured output from the results. systemPrompt: type: string description: >- Instruction that guides how the structured output is generated. required: - query responses: '200': description: Search completed successfully. content: application/json: schema: type: object properties: requestId: type: string description: Exa request identifier. results: type: array description: Ranked search results. items: type: object properties: title: type: string url: type: string publishedDate: type: string author: type: string id: type: string output: description: >- Structured output, present only when outputSchema was supplied. nullable: true costDollars: description: >- Upstream Exa cost breakdown. Informational only; customer billing is a flat per-request rate. nullable: true components: securitySchemes: bearerAuth: type: http scheme: bearer ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.