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Exa

AI-native search API — fast, high-quality web search built for agents

Exa provides a search API purpose-built for AI agents and RAG. Semantic search across the web, GitHub repos, docs, news, and 1B+ people profiles. Returns structured outputs and token-efficient highlights. Sub-180ms latency. Used by Cursor, Notion, OpenRouter, and Hubspot.

Best for agent capabilities

Useful in agent tasks

Overview

Websiteexa.ai
Authapi key
PricingFree tier available · $0 (1K free requests/mo)
SDKstypescript, python
OpenAPIYes
MCP SupportYes

When to use Exa

Exa is listed for Search, Data workflows. Exa provides a search API purpose-built for AI agents and RAG. Semantic search across the web, GitHub repos, docs, news, and 1B+ people profiles. Returns structured outputs and token-efficient highlights. Sub-180ms latency. Used by Cursor, Notion, OpenRouter, and Hubspot. Consider it when an agent needs this capability through a documented service boundary instead of custom infrastructure maintained inside the application.

In 4agent’s task model, the product maps to Web search, Web extraction, Workflow automation. That makes it a candidate for these tasks: Research the web, Manage memory and knowledge, Communicate with users, Automate business workflows.

Integration checklist

  • Access: Confirm the api key authentication flow, credential scope, rotation process, and whether calls can be attributed to a user or service identity.
  • Client support: Official or documented clients are listed for typescript, python.
  • Automation: OpenAPI: listed as available; MCP: listed as available; CLI: not currently recorded. Confirm each requirement in the provider's current documentation.
  • Operations: Test rate limits, timeouts, retry safety, error payloads, logs, data retention, and the current free-tier and paid pricing model with production-like volume.

Sources and verification

Use these primary sources to verify current behavior before making an implementation or purchasing decision. Product capabilities, limits, and prices can change after a 4agent listing is reviewed.