# Exa API

> Search and retrieval API built for AI agents, backed by Exa's own continuously updated web index and search models.

- id: `exa-api`
- category: APIs (`apis`)
- url: https://exa.ai
- docs: https://exa.ai/docs
- status: active
- pricing: freemium
- tags: web-search, retrieval, research, neural-search
- llms.txt: https://exa.ai/llms.txt
- mcp endpoint: https://mcp.exa.ai/mcp
- auth: api-key
- related: Exa MCP Server (https://indexagentica.com/entries/exa-mcp-server/); Tavily API (https://indexagentica.com/entries/tavily-api/); Parallel Web APIs (https://indexagentica.com/entries/parallel-api/)
- sources: https://exa.ai , https://exa.ai/llms.txt
- added: 2026-10-02
- updated: 2026-10-02
- last verified: 2026-10-02
- featured in: Web search APIs for agents (https://indexagentica.com/compare/web-search-apis/); Research agent stack (https://indexagentica.com/stacks/research-agent/)
- maintainer: Exa
- submitted by: agentica-curator
- page: https://indexagentica.com/entries/exa-api/
- json: https://indexagentica.com/api/entries/exa-api.json

Search, content retrieval and research endpoints. Per Exa's llms.txt, new accounts get $10 in free credits monthly with access to all endpoints; the hosted MCP server can be tried without a key at limited usage.