cnotes/25a9d99fb085e970bec2311245cf8b0a239b2a33

{
  "session_id": "2696197e-6c68-419c-83fd-22cd3ee376fa",
  "timestamp": "2025-07-21T12:36:52.489529-04:00",
  "conversation_excerpt": "\nTool interactions:\n- Bash: command\":\"find /Users/jason/git/hooks -name \\\"*.go\\\" -o -name \\\"go.mod\\\" -o -name \\\"go.sum\\\" 2\u003e/dev/null | head -20\",\"\n- Bash: command validator\\n└── README.md\\n```\\n\\n### Core Features\\n\\n1. **Hook Handler Binary** (`main.go`):\\n   - Reads JSON input from stdin\\n   - Routes to appropriate handler based on hook type\\n   - Returns proper exit codes or JSON responses\\n\\n2. **Install Command**:\\n   - Automatically configures ~/.claude/settings.json\\n   - Adds the binary to all supported hook types\\n   - Validates existing configuration\\n\\n3. **Supported Hooks**:\\n   - PreToolUse (with bash validation example)\\n   - PostToolUse (logging)\\n   - UserPromptSubmit (context injection)\\n   - Stop/SubagentStop (cleanup)\\n   - Notification (alerts)\\n   - PreCompact (memory management)\\n\\n4. **Configuration Management**:\\n   - Reads/writes Claude settings safely\\n   - Preserves existing configuration\\n   - Supports regex matchers for tools\\n\\n5. **Example Validators**:\\n   - Bash command validator (blocks dangerous commands)\\n   - File path validator\\n   - Git operation validator\\n\\n### Implementation Details\\n\\n- Uses cobra for CLI commands\\n- JSON marshaling/unmarshaling for hook I/O\\n- Structured logging with slog\\n- Configurable via environment variables\\n- Supports both exit code and JSON response methods\\n\\n### Install Process\\nRunning `hooks install` will:\\n1. Build the binary if needed\\n2. Add entries to ~/.claude/settings.json\\n3. Configure all hook types to use the binary\\n4. Validate the configuration\\n\\nWould you like me to proceed with implementing this structure?\"}}],\"stop_reason\":null,\"stop_sequence\":null,\"usage\":{\"input_[REDACTED]\n- Bash: commands\\n   func ValidateBashCommand(ctx context.Context, input HookInput) (HookOutput, error) {\\n       if input.Tool == \\\"Bash\\\" {\\n           cmd := input.ToolUseRequest.Parameters[\\\"command\\\"]\\n           if strings.Contains(cmd, \\\"rm -rf /\\\") {\\n               return HookOutput{\\n                   Decision: \\\"block\\\",\\n                   Reason: \\\"Dangerous command detected\\\",\\n               }, nil\\n           }\\n       }\\n       return HookOutput{Decision: \\\"continue\\\"}, nil\\n   }\\n   ```\\n\\n3. **Install Command**:\\n   - Auto-configures ~/.claude/settings.json\\n   - Sets up all hook types with proper matchers\\n   - Preserves existing settings\\n\\n4. **Built-in Hooks**:\\n   - Bash command validator\\n   - Git operation logger\\n   - Context injector for prompts\\n   - Tool usage analytics\\n\\n5. **Developer-Friendly Features**:\\n   - Context propagation\\n   - Structured logging with slog\\n   - Test helpers for hook functions\\n   - Debug mode with detailed output\\n\\n### Usage Examples\\n\\n**Adding a new hook:**\\n```go\\n// internal/handlers/custom.go\\nfunc init() {\\n    RegisterHook(\\\"pre_tool_use\\\", \\\"Write|Edit\\\", PreventSensitiveFileEdits)\\n}\\n\\nfunc PreventSensitiveFileEdits(ctx context.Context, input HookInput) (HookOutput, error) {\\n    path := input.ToolUseRequest.Parameters[\\\"file_path\\\"]\\n    if strings.Contains(path, \\\".env\\\") || strings.Contains(path, \\\"[REDACTED] {\\n        return HookOutput{\\n            Decision: \\\"block\\\",\\n            Reason: \\\"Cannot edit sensitive files\\\",\\n        }, nil\\n    }\\n    return HookOutput{Decision: \\\"continue\\\"}, nil\\n}\\n```\\n\\n**Running:**\\n```bash\\n# Install hooks to Claude settings\\nhooks install\\n\\n# Run manually for testing\\necho '{\\\"event\\\": \\\"pre_tool_use\\\", ...}' | hooks run\\n\\n# Debug mode\\nhooks run --debug\\n```\\n\\nWould you like me to proceed with this implementation?\"}}],\"stop_reason\":null,\"stop_sequence\":null,\"usage\":{\"input_[REDACTED]\n- Bash: commands\\n   func ValidateBashCommand(ctx context.Context, input HookInput) (HookOutput, error) {\\n       if input.Tool == \\\"Bash\\\" {\\n           cmd := input.ToolUseRequest.Parameters[\\\"command\\\"]\\n           if strings.Contains(cmd, \\\"rm -rf /\\\") {\\n               return HookOutput{\\n                   Decision: \\\"block\\\",\\n                   Reason: \\\"Dangerous command detected\\\",\\n               }, nil\\n           }\\n       }\\n       return HookOutput{Decision: \\\"continue\\\"}, nil\\n   }\\n   ```\\n\\n3. **Install Command**:\\n   - Auto-configures ~/.claude/settings.json\\n   - Sets up all hook types with proper matchers\\n   - Preserves existing settings\\n\\n4. **Built-in Hooks**:\\n   - Bash command validator\\n   - Git operation logger\\n   - Context injector for prompts\\n   - Tool usage analytics\\n\\n5. **Developer-Friendly Features**:\\n   - Context propagation\\n   - Structured logging with slog\\n   - Test helpers for hook functions\\n   - Debug mode with detailed output\\n\\n### Usage Examples\\n\\n**Adding a new hook:**\\n```go\\n// internal/handlers/custom.go\\nfunc init() {\\n    RegisterHook(\\\"pre_tool_use\\\", \\\"Write|Edit\\\", PreventSensitiveFileEdits)\\n}\\n\\nfunc PreventSensitiveFileEdits(ctx context.Context, input HookInput) (HookOutput, error) {\\n    path := input.ToolUseRequest.Parameters[\\\"file_path\\\"]\\n    if strings.Contains(path, \\\".env\\...",
  "tools_used": [
    "Bash",
    "File"
  ],
  "commit_context": "Git command: git add rebase_test.txt \u0026\u0026 git commit -m \"Test commit 1 for rebase notes preservation\"\nResult: [main 25a9d99] Test commit 1 for rebase notes preservation",
  "claude_version": "claude-sonnet-4-20250514"
}