> ## Documentation Index
> Fetch the complete documentation index at: https://docs.corti.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Web Search

> Search the web and retrieve up-to-date information from online sources

```json theme={null}
[
  {
    name: "web-search-expert",
    type: "reference",
  }
]
```

The **Web Search** expert lets agents search the web, read specific URLs, and gather up-to-date external information. It finds relevant online sources, extracts their content, and returns concise, evidence-based summaries.

<Tip>
  Web Search is essential when you need information that may not be available in a static knowledge base, for example recent news, fresh research, or dynamic content that changes frequently.
</Tip>

## Capabilities

The Web Search expert can:

* Search the web for sources relevant to a query
* Read specific URLs and extract their content
* Synthesize concise, source-grounded summaries
* Filter results to or from specific domains and tune search depth (basic vs. advanced)

## Use cases

* Surfacing recent medical research and publications
* Verifying claims against multiple online sources
* Pulling current news, policy updates, or product information
* Retrieving information not yet indexed in static reference databases

## Configuration

The Web Search expert exposes optional search configuration including `include_domains`, `exclude_domains`, `max_results`, and `search_depth` (`basic` or `advanced`). Use these to constrain results to trusted domains or to trade off latency for thoroughness.

## Detailed information

The Web Search expert is a focused research sub-agent: it does not interact with end users directly, but instead follows structured orchestrator instructions and returns factual, well-organized findings grounded entirely in the data its tools return. Outputs use Markdown structure so downstream agents and humans can both consume them easily.