Exa provides a unified REST API that covers three core capabilities: neural web search (SERP), full website crawling, and a deep research agent pipeline. The search API supports multiple verticals — full web, news, companies, research papers, people, and financials — with configurable latency modes ranging from ~450ms (Fast) to ~10s (Deep). A specialized highlights model extracts the most relevant excerpts from retrieved pages, reducing tokens passed to downstream LLMs by up to 90%. Exa also supports structured outputs (e.g., JSON company enrichments across 70M+ companies), MCP Server integration, and SOC 2 Type II certified infrastructure with optional Zero Data Retention (ZDR).