hook-development

Claude Code hooks validate PreToolUse and PostToolUse events by applying structured configurations to analyze tool_input, enforce policies, and block dangerous operations. You can create prompt-based or command-based hooks to automate safety checks and reduce risk.

Securing plugin automation with event-driven hooks requires enforcing validation, risk scoring, and environment variable handling. This approach guards events like SessionStart and Stop, ensuring safe extension via optional directories while running hooks in parallel for performance.

Yes, you need jq installed to build and run command-based Claude Code hooks. The hook development process depends on jq for parsing environment variables and structured tool_input data during event validation and context loading.

Yes, you can run multiple Claude Code hooks in parallel for performance during plugin development. The hook configuration enforces parallel execution across events such as SubagentStop, ensuring automated validation and context loading do not bottleneck the workflow.

Limitations of prompt-based hooks for context loading involve managing environment variable handling and debugging complexity. While prompt-based hooks analyze tool_input effectively, command-based hooks using jq are sometimes required for structured validation and performance.