disler/claude-code-hooks-mastery

**disler/claude-code-hooks-mastery**

Master Claude Code HooksClaude Code Hooks Mastery Claude Code Hooks - Quickly master how to use Claude Code hooks to add deterministic (or non-deterministic) control over Claude Code's behavior. Plus learn about Claude Code Sub-Agents, the powerful Meta-Agent, and Team-Based Validation with agent orchestration. Table of Contents Prerequisites Hook Lifecycle & Payloads What This Shows UV Single-File Scripts Architecture Key Files Features Demonstrated Hook Error Codes & Flow Control UserPromptSubmit Hook Deep Dive Claude Code Sub-Agents Team-Based Validation System Output Styles Collection Custom Status Lines Prerequisites This requires: Astral UV - Fast Python package installer and resolver Claude Code - Anthropic's CLI for Claude AI Optional Setup: Optional: ElevenLabs - Text-to-speech provider (with MCP server integration) ElevenLabs MCP Server - MCP server for ElevenLabs Firecrawl MCP Server - Web scraping and crawling MCP server (my favorite scraper) OpenAI - Language model provider + Text-to-speech provider Anthropic - Language model provider Ollama - Local language model provider Hook Lifecycle & Payloads This demo captures all 13 Claude Code hook lifecycle events with their JSON payloads: Hook Lifecycle Overview flowchart TB subgraph SESSION["🟢 Session Lifecycle"] direction TB SETUP[["🔧 Setup<br/>(init/maintenance)"]] START[["▶️ SessionStart<br/>(startup/resume/clear)"]] END[["⏹️ SessionEnd<br/>(exit/sigint/error)"]] end subgraph MAIN["🔄 Main Conversation Loop"] direction TB PROMPT[["📝 UserPromptSubmit"]] CLAUDE["Claude Processes"] subgraph TOOLS["🛠️ Tool Execution"] direction TB PRE[["🔒 PreToolUse"]] PERM[["❓ PermissionRequest"]] EXEC["Tool Executes"] POST[["✅ PostToolUse"]] FAIL[["❌ PostToolUseFailure"]] end subgraph SUBAGENT["🤖 Subagent Lifecycle"] direction TB SSTART[["🚀 SubagentStart"]] SWORK["Subagent Works"] SSTOP[["🏁 SubagentStop"]] end NOTIFY[["🔔 Notification<br/>(Async)"]] STOP[["🛑 Stop"]] end subgraph COMPACT["🗜️ Maintenance"] PRECOMPACT[["📦 PreCompact"]] end SETUP --> START START --> PROMPT PROMPT --> CLAUDE CLAUDE --> PRE PRE --> PERM PERM --> EXEC EXEC --> POST EXEC -.-> FAIL CLAUDE -.-> SSTART SSTART --> SWORK SWORK --> SSTOP POST --> CLAUDE CLAUDE --> STOP CLAUDE -.-> NOTIFY STOP --> PROMPT STOP -.-> END PROMPT -.-> PRECOMPACT PRECOMPACT -.-> PROMPT 1. UserPromptSubmit Hook Fires: Immediately when user submits a prompt (before Claude processes it) Payload: prompt text, session_id, timestamp Enhanced: Prompt validation, logging, context injection, security filtering 2. PreToolUse Hook Fires: Before any tool execution Payload: tool_name, tool_input parameters Enhanced: Blocks dangerous commands (rm -rf, .env access) 3...

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