Subagents in Claude Code: Splitting Context, Specializing and Running in Parallel
In Claude Code a subagent is a separate Claude instance that the main session hands a side task to and that works in its own context window: it doesn't see the conversation history, does see CLAUDE.md, and returns only a summary. The .claude/agents/ file format, the tools allowlist, the model and memory fields, the background and forks, worktree isolation, and ef-query-reviewer, angular-a11y-checker and test-runner for Bookstore.
15 Nov 2026
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12 min
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4
