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Claude Code subagents, hooks and slash commands: a practical setup guide

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The guide explains how to turn CLAUDE.md guidance into enforced behavior using subagents, hooks, and slash commands in Claude Code. Subagents are Markdown files in .claude/agents/ with YAML frontmatter, each running in its own context with limited tools such as read-only access for reviewers. Hooks configured in .claude/settings.json can block or allow tool calls, such as stopping destructive shell commands or refusing edits to secret files, and can run formatters or tests. Slash commands defined in .claude/commands/ chain subagents into repeatable workflows. The article also advises reading hook scripts before enabling them and keeping them under version control, since hooks run with the user's permissions.

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