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Web Search (Exa.ai)

The Exa node gives your agent access to real-time web search via Exa.ai. The LLM can call the web_search tool during a conversation to look up current information.

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Setup

  1. Get an API key from exa.ai
  2. Add it to .env.local: 
    EXA_API_KEY=your-exa-key
  3. Drag the Exa node from the sidebar (Integration category) onto the canvas
  4. Connect its output handle to the Framework node’s tools_in handle

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Parameters

ParameterTypeDefaultDescription
searchTypeenumautoSearch strategy: auto, neural, or keyword
numResultsslider (1–10)5Number of search results to return
includeContentsbooleantrueWhether to include page text snippets in results

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How it works

When the LLM decides it needs current information:
  1. It calls the web_search tool with a query string
  2. Exa searches the web and returns results (title, URL, snippet)
  3. The results are injected into the LLM’s context
  4. The agent responds using the search results
The agent publishes tool_call and tool_result events (visible in step highlighting).

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Search types

  • auto — Exa automatically selects the best search strategy
  • neural — Semantic search, best for conceptual queries
  • keyword — Traditional keyword search, best for specific terms or names

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Use cases

  • Answering questions about current events, prices, or availability
  • Looking up product documentation or specs in real time
  • Fetching information that changes frequently
  • Research-oriented voice agents
The Exa node is only supported on the LiveKit framework.