Which Claude Code events can I trigger hooks on?

The skill supports SessionStart, PreToolUse, PostToolUse, PostToolUseFailure, and Notification events.

It is a TypeScript library and framework designed to help developers create type-safe hooks for the Claude Code CLI, making it easier to manage AI behavior.

Does this skill support custom MCP tools?

Yes, you can extend the ToolSchema interface in your code to provide full type-safety for custom tools defined via the Model Context Protocol.

Can I block Claude from performing certain actions?

Yes, by using the PreToolUse hook, you can return a 'blockingError' through the context object to stop Claude from executing a specific tool call.

Why use Bun for these hooks?

Bun is recommended for its high-performance script execution and native TypeScript support, ensuring that hooks run with minimal latency during AI interactions.

TypeScript Claude Code Hooks

Name: TypeScript Claude Code Hooks
Author: masseater

bymasseater

0•

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Streamlines the creation of type-safe Claude Code hooks using TypeScript and the cc-hooks-ts library.

This skill provides a standardized framework for developing robust, type-safe hooks to customize Claude Code's behavior. By utilizing the cc-hooks-ts library, developers can implement sophisticated event-driven logic for session initialization, pre-tool validation, and post-tool processing. It is particularly useful for teams looking to enforce security policies, automate documentation updates, or inject custom context into AI interactions using a familiar TypeScript environment and the Bun runtime.

主な機能

01Type-safe definitions for all major Claude Code event hooks

02Conditional execution logic based on environment or platform

03Support for custom tool schema extensions via TypeScript module augmentation

04Granular tool-level triggers for Read, Write, and Edit operations

05Structured context API for blocking actions or returning additional context

060 GitHub stars

ユースケース

01Validating project environment and dependencies during SessionStart

02Implementing security guardrails to prevent unauthorized directory access

03Automating the suggestion of 'knowledge' or 'learned' files after code modifications

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add masseater/claude-code-plugin cc-hooks-ts

For use in Claude.ai and ChatGPT

Download Skill