--- name: moai-foundation-claude aliases: [moai-foundation-claude] category: foundation description: Canonical Claude Code authoring kit covering Skills, sub-agents, plugins, slash commands, hooks, memory, settings, sandboxing, headless mode, and advanced agent patterns. Use when creating Claude Code extensions or configuring Claude Code features. version: 5.0.0 modularized: false user-invocable: false allowed-tools: - Read - Write - Edit - Grep - Glob - mcp__context7__resolve-library-id - mcp__context7__get-library-docs tags: [ "foundation", "claude-code", "skills", "sub-agents", "plugins", "slash-commands", "hooks", "memory", "settings", "sandboxing", "headless", "agent-patterns", ] updated: 2026-01-11 status: "active" # Progressive Disclosure Configuration progressive_disclosure: enabled: true level1_tokens: ~100 level2_tokens: ~5000 # Trigger Conditions for Level 2 Loading triggers: keywords: - "skill" - "agent" - "plugin" - "slash command" - "hook" - "sandbox" - "headless" - "memory" - "settings" - "claude code" - "sub-agent" - "agent pattern" - "orchestration" - "delegation" agents: - "builder-agent" - "builder-command" - "builder-skill" - "builder-plugin" - "manager-claude-code" phases: - "plan" - "run" - "sync" --- # Claude Code Authoring Kit Comprehensive reference for Claude Code Skills, sub-agents, plugins, slash commands, hooks, memory, settings, sandboxing, headless mode, and advanced agent patterns. ## Documentation Index Core Features: - reference/claude-code-skills-official.md - Agent Skills creation and management - reference/claude-code-sub-agents-official.md - Sub-agent development and delegation - reference/claude-code-plugins-official.md - Plugin architecture and distribution - reference/claude-code-custom-slash-commands-official.md - Command creation and orchestration Configuration: - reference/claude-code-settings-official.md - Configuration hierarchy and management - reference/claude-code-memory-official.md - Context and knowledge persistence - reference/claude-code-hooks-official.md - Event-driven automation - reference/claude-code-iam-official.md - Access control and security Advanced Features: - reference/claude-code-sandboxing-official.md - Security isolation - reference/claude-code-headless-official.md - Programmatic and CI/CD usage - reference/claude-code-devcontainers-official.md - Containerized environments - reference/claude-code-cli-reference-official.md - Command-line interface - reference/claude-code-statusline-official.md - Custom status display - reference/advanced-agent-patterns.md - Engineering best practices ## Quick Reference Skills: Model-invoked extensions in ~/.claude/skills/ (personal) or .claude/skills/ (project). Three-level progressive disclosure. Max 500 lines. Sub-agents: Specialized assistants via Task(subagent_type="..."). Own 200K context. Cannot spawn sub-agents. Use /agents command. Plugins: Reusable bundles in .claude-plugin/plugin.json. Include commands, agents, skills, hooks, MCP servers. Commands: User-invoked via /command. Parameters: $ARGUMENTS, $1, $2. File refs: @file. Hooks: Events in settings.json. PreToolUse, PostToolUse, SessionStart, SessionEnd, PreCompact, Notification. Memory: CLAUDE.md files + .claude/rules/*.md. Enterprise to Project to User hierarchy. @import syntax. Settings: 6-level hierarchy. Managed to file-managed to CLI to local to shared to user. Sandboxing: OS-level isolation. Filesystem and network restrictions. Auto-allow safe operations. Headless: -p flag for non-interactive. --allowedTools, --json-schema, --agents for automation. ## Skill Creation ### Progressive Disclosure Architecture Level 1 (Metadata): Name and description loaded at startup, approximately 100 tokens per Skill Level 2 (Instructions): SKILL.md body loaded when triggered, under 5K tokens recommended Level 3 (Resources): Additional files loaded on demand, effectively unlimited ### Required Format Create a SKILL.md file with YAML frontmatter containing name in kebab-case and description explaining what it does and when to use it in third person. Maximum 1024 characters for description. After the frontmatter, include a heading with the skill name, a Quick Start section with brief instructions, and a Details section referencing REFERENCE.md for more information. ### Best Practices - Third person descriptions (does not I do) - Include trigger terms users mention - Keep under 500 lines - One level deep references - Test with Haiku, Sonnet, Opus ## Sub-agent Creation ### Using /agents Command Type /agents, select Create New Agent, define purpose and tools, press e to edit prompt. ### File Format Create a markdown file with YAML frontmatter containing name, description explaining when to invoke (use PROACTIVELY for auto-delegation), tools as comma-separated list (Read, Write, Bash), and model specification (sonnet). After frontmatter, include the system prompt. ### Critical Rules - Cannot spawn other sub-agents - Cannot use AskUserQuestion effectively - All user interaction before delegation - Each gets own 200K context ## Plugin Creation ### Directory Structure Create my-plugin directory with .claude-plugin/plugin.json, commands directory, agents directory, skills directory, hooks/hooks.json, and .mcp.json file. ### Manifest (plugin.json) Create a JSON object with name, description explaining plugin purpose, version as 1.0.0, and author object containing name field. ### Commands Use /plugin install owner/repo to install from GitHub. Use /plugin validate . to validate current directory. Use /plugin enable plugin-name to enable a plugin. ## Advanced Agent Patterns ### Two-Agent Pattern for Long Tasks Initializer agent: Sets up environment, feature registry, progress docs Executor agent: Works single features, updates registry, maintains progress See reference/advanced-agent-patterns.md for details. ### Orchestrator-Worker Architecture Lead agent: Decomposes tasks, spawns workers, synthesizes results Worker agents: Execute focused tasks, return condensed summaries ### Context Engineering Principles - Smallest set of high-signal tokens - Just-in-time retrieval over upfront loading - Context compaction for long sessions - External memory files persist outside window ### Tool Design Best Practices - Consolidate related functions into single tools - Return high-signal context-aware responses - Clear parameter names (user_id not user) - Instructive error messages with examples ## Workflow: Explore-Plan-Code-Commit Phase 1 Explore: Read files, understand structure, map dependencies Phase 2 Plan: Use think prompts, outline approach, define criteria Phase 3 Code: Implement iteratively, verify each step, handle edges Phase 4 Commit: Descriptive messages, logical groupings, clean history ## MoAI-ADK Integration ### Core Skills - moai-foundation-claude: This authoring kit - moai-foundation-core: SPEC system and workflows - moai-foundation-philosopher: Strategic thinking ### Essential Sub-agents - spec-builder: EARS specifications - manager-tdd: TDD execution - expert-security: Security analysis - expert-backend: API development - expert-frontend: UI implementation ## Security Features ### Sandboxing - Filesystem: Write restricted to cwd - Network: Domain allowlists via proxy - OS-level: bubblewrap (Linux), Seatbelt (macOS) ### Dev Containers - Security-hardened with firewall - Whitelisted outbound only - --dangerously-skip-permissions for trusted only ### Headless Safety - Always use --allowedTools in CI/CD - Validate inputs before passing to Claude - Handle errors with exit codes ## Resources For detailed patterns and working examples, see the reference directory. Version History: - v5.0.0 (2026-01-11): Converted to narrative format per CLAUDE.md Documentation Standards - v4.0.0 (2026-01-06): Added plugins, sandboxing, headless, statusline, dev containers, CLI reference, advanced patterns - v3.0.0 (2025-12-06): Added progressive disclosure, sub-agent details, integration patterns - v2.0.0 (2025-11-26): Initial comprehensive release