anthropic-claude-code-extend

anthropic-claude-code-extend

Claude Code (code.claude.com) — Reference for the feature set that extends the CLI itself. Covers Agent Skills (SKILL.md), slash commands, output styles, subagents / agent teams / agent view / workflows / routines / scheduled tasks, hooks, plugins / plugin marketplace, MCP configuration, channels (--channels / claude/channel push events), and built-in tools (including advisor / ultrareview).

For the CLI itself (installation, configuration, sessions), see anthropic-claude-code、Agent SDK の Skills / MCP / subagents / hooks は anthropic-agent-sdk; for the Claude API side of Agent Skills / Skills API / MCP connector, see anthropic-api-tools-mcp (this skill covers the configuration and specifications of extensions used from the Claude Code CLI).

Directory structure

skills/anthropic-claude-code-extend/
  SKILL.md
  references/
    skills-commands/
      README.md
      commands.md
      output-styles.md
      prompt-library.md
      skills.md
    subagents/
      README.md
      agent-teams.md
      agent-view.md
      agents.md
      desktop-scheduled-tasks.md
      routines.md
      routines-fire.md
      scheduled-tasks.md
      sub-agents.md
      workflows.md
    hooks/
      README.md
      hooks.md
      hooks-guide.md
    plugins/
      README.md
      discover-plugins.md
      plugin-dependencies.md
      plugin-hints.md
      plugin-marketplaces.md
      plugin-relevance.md
      plugins.md
      plugins-reference.md
    mcp/
      README.md
      managed-mcp.md
      mcp.md
      mcp-quickstart.md
    channels/
      README.md
      channels.md
      channels-reference.md
    tools/
      README.md
      advisor.md
      tools-reference.md
      ultrareview.md
  samples/
    README.md
    skill-definition.md
    slash-command.md
    hook-config.md
    subagent-definition.md
    plugin-manifest.md
    plugin-marketplace.md
    mcp-config.md
    output-style.md

Exploration procedure

Look up the category from the task, and identify the target page in the category's README.md:

1. Find the category corresponding to the task in the mapping table below
2. of that category references/{category}/README.md（samples/ (the README.md directly under it) to identify the target page
3. Read the .md of the relevant page to check the details

Task → Category Mapping

Task	Category	Reference README
Want to define Agent Skills (SKILL.md), create a slash command, or use output styles or the SDLC prompt library	skills-commands	references/skills-commands/README.md
Want to define a subagent, coordinate multiple instances with agent teams, manage background sessions with agent view, compare the 4 approaches to parallel execution, automate with routines / scheduled tasks (/loop, /fire), set up local recurring tasks from the Desktop app's Routines page, or build large-scale orchestration with workflows	subagents	references/subagents/README.md
Want to configure and implement hooks on session lifecycle events (SessionStart / PreToolUse / PostToolUse / PermissionRequest, etc.)	hooks	references/hooks/README.md
Want to create and distribute a plugin, build a plugin marketplace, or check the plugin.json manifest or dependency constraints	plugins	references/plugins/README.md
Want to connect from Claude Code to an MCP server (.mcp.json / claude mcp add) or control managed MCP access at the organization level	mcp	references/mcp/README.md
Want to push webhooks / alerts / chat messages to a running session, or--channels want to enable channel plugins (telegram / discord / imessage) withclaude/channel capability)	channels	references/channels/README.md
Want to check the complete reference for built-in tools (Agent / Bash / Read / Edit / Skill, etc.) or use the advisor tool or ultrareview	tools	references/tools/README.md
Want to know typical usage (SKILL.md definitions, slash commands, hook configuration, subagent definitions, plugin manifest / marketplace, .mcp.json, output styles)	samples	samples/README.md