hook-builder

Custom Claude Code hooks automate validation by generating Bash or Python scripts and configuration entries for lifecycle events like PreToolUse. This allows you to intercept and block dangerous commands such as rm -rf before they execute.

A PreToolUse hook intercepts tool execution in Claude Code, allowing you to validate Bash commands before they run. It uses custom scripts to check stdin formats and matchers, returning specific exit codes to block or allow the operation.

Yes, Claude Code hook automation supports both Python and Bash scripts for custom hook logic. The generated scripts handle stdin parsing and return exit codes to control tool execution during lifecycle events like PostToolUse and Stop.

Configuring hooks involves generating JSON entries for the .claude/settings.json file to define matchers and lifecycle events. The hook builder creates these configuration entries alongside your custom scripts, ensuring proper exit codes and stdin/stdout formats are used.

The best way to block git push --force is by creating a PreToolUse hook that intercepts Bash commands. The hook script matches the dangerous pattern and returns a specific exit code to prevent execution before the tool runs.

Claude Code supports custom hook scripts for multiple lifecycle events, including PostToolUse and Stop. These hooks automate responses and validations by processing stdin and returning exit codes to control execution flow.