name: claude-code-features description: Comprehensive reference of Claude Code features. Use when asking about Claude Code capabilities, hooks, skills, agents, plugins, or configuration.

Claude Code Feature Reference

Comprehensive list of Claude Code features as of January 2026.

Configuration Files

Hooks (13 Types)

Hook Types

• command - Execute shell command
• prompt - Inject prompt (Stop/SubagentStop only)

Hook Response Format

{
  "continue": true,
  "stopReason": "string",
  "systemMessage": "string",
  "hookSpecificOutput": {
    "hookEventName": "PreToolUse",
    "permissionDecision": "allow|deny|ask"
  }
}

Skills

Required Frontmatter

• name - Lowercase, hyphens, max 64 chars
• description - When to use, max 1024 chars

Optional Frontmatter

• allowed-tools - Tools allowed without permission
• model - Specific model to use
• context: fork - Isolated sub-agent context
• agent - Agent type for fork context
• hooks - Lifecycle hooks
• user-invocable - Slash command visibility

Subagents

Required Frontmatter

• name - Lowercase with hyphens
• description - When to delegate

Optional Frontmatter

• tools - Available tools
• disallowedTools - Denied tools
• model - sonnet, opus, haiku, inherit
• permissionMode - default, acceptEdits, dontAsk, bypassPermissions, plan
• skills - Skills to load
• hooks - Lifecycle hooks

Built-in Agents

• Explore - Fast read-only (Haiku)
• Plan - Research for planning
• general-purpose - Complex tasks
• Bash - Terminal commands

Plugins

Structure

plugin/
├── .claude-plugin/plugin.json
├── commands/
├── agents/
├── skills/
├── hooks/hooks.json
├── .mcp.json
└── .lsp.json

Permissions

{
  "permissions": {
    "allow": ["Bash(git diff:*)"],
    "ask": ["Bash(git push:*)"],
    "deny": ["Read(./.env)"]
  }
}

MCP Servers

{
  "mcpServers": {
    "name": {
      "command": "npx",
      "args": ["-y", "@package/name"],
      "env": {}
    }
  }
}

Last verified: January 2026