Python utility package for building Claude Code hooks
The article introduces 'claude-hook-utils', a Python utility package designed for creating Claude Code hooks with reduced boilerplate. These hooks enable users to validate tool calls, react to results, and manage user prompts during execution. The package simplifies the development process by handling repetitive tasks, allowing developers to focus on their validation logic.
- ▪Claude Code hooks are custom scripts that run at specific points during execution.
- ▪The package supports multiple hook types and has minimal dependencies.
- ▪Users can validate tool calls, log results, and initialize state with ease.
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claude-hook-utils A Python utility package for building Claude Code hooks with minimal boilerplate. What Are Claude Code Hooks? Claude Code hooks are custom scripts that run at specific points during Claude Code's execution. They allow you to: Validate tool calls before they execute (PreToolUse) React to tool results after execution (PostToolUse) Intercept user prompts before Claude sees them (UserPromptSubmit) Initialize state when a session starts (SessionStart) Why This Package? Building Claude Code hooks involves repetitive boilerplate: Parsing JSON from stdin Validating input structure Formatting responses in the correct schema Handling errors gracefully claude-hook-utils handles all of this, letting you focus on your validation logic.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.