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session-hook

Create and manage per-session hooks for Claude Code tasks.

1|Updated Oct 26, 2025
Search Tags:#automation#workflow#hooks#scripts#claude-code#session-hook
One-click install
npx skills add https://github.com/gosu-code/claude-plugin --skill session-hook
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: session-hook
Source: https://github.com/gosu-code/claude-plugin/tree/main/plugins/gosu-mcp-core/skills/session-hook
Command: npx skills add https://github.com/gosu-code/claude-plugin --skill session-hook

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

Session hooks address the need to modify Claude Code behavior for a single active session without requiring a full restart, enabling rapid experimentation and debugging.

Core Features & Use Cases

  • Create per-session hooks that activate immediately, scoped to the current session.
  • Manage multiple hook types (json and command) with optional matchers and optional global scope.
  • Use for on-the-fly context injection, temporary enforcement of workflows, and session-specific automation during active tasks.

Quick Start

Create a session hook for the current Claude Code session using the provided CLI.

Frequently Asked Questions about session-hook

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create session-scoped hooks for Claude Code without restarting?▼

Session-scoped hooks are per-session automation scripts that activate immediately for Claude Code tasks. You can create them on the fly to modify behavior dynamically during an active session without requiring a full restart.

What are session hooks used for in Claude Code workflows?▼

Session hooks are used for on-the-fly context injection, temporary enforcement of workflows, and session-specific automation. They adapt to the current session and project context during active debugging or one-off tasks.

Can I use matchers and different hook types with Claude Code session hooks?▼

Yes, session hooks support multiple hook types including json and command. They also support optional matchers and enforce input validation for UUID formats and supported events.

How do I configure project-scoped versus user-scoped hook configuration files?▼

Session hooks write to project- or user-scoped hook configuration files. This allows you to apply automation scripts either to the current project context or globally across the user environment.

Does session-hook support dynamic one-off workflows and debugging sessions?▼

Yes, session-hook is designed for dynamic one-off workflows and debugging sessions. It enables rapid experimentation by applying session-scoped hooks that adapt to the current active task.

What input validation is enforced when creating Claude Code hooks?▼

Input validation enforces UUID format, supported events, and optional matchers. This ensures that per-session hooks are configured correctly before writing to project- or user-scoped files.

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