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The Subagent Claude Code Delegates Searches To
While handling a request, Claude Code decides a broad codebase search is needed and dispatches it to a specific built-in subagent rather than running the search itself in the main context.
Which subagent is this?
Solution
The correct answer is "The built-in read-only Explore subagent."
Claude Code ships a dedicated, read-only Explore subagent that it
delegates broad searches to, keeping the search's noise out of the
main context the same way any subagent does. There is no built-in
"Reviewer" or "Plan" subagent shipped by default — those are patterns
you can build yourself with the general subagent mechanism, not named
built-ins — and the claim that no built-in subagent exists for this is
simply false.
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