claude-hook-builder

To create Claude Code hooks, define the event, matcher, and script in YAML frontmatter within SKILL.md. This Skill auto-generates configurations for PreToolUse, PostToolUse, UserPromptSubmit, SessionStart, and SessionEnd events to automate validations and context injection.

Claude Code hooks support PreToolUse, PostToolUse, UserPromptSubmit, SessionStart, and SessionEnd events. These events allow you to handle tool execution validations, transformations, prompt submissions, and session management automations.

Set up a PreToolUse hook by specifying the event, matcher, and command in your SKILL.md YAML frontmatter. This configuration intercepts tool execution to run validation scripts or prompt-based definitions before the tool processes the request.

Yes, Claude Code hooks support both command-based and prompt-based definitions. You can specify either a script to run or a prompt-based instruction to handle tool execution, validations, and context injection across various workflow events.

You need a SKILL.md file containing YAML frontmatter with at least a name and description. Optional scripts, references, and assets can be included to implement the hook logic and automate tool execution workflows effectively.

Session management hooks require correct configuration for SessionStart and SessionEnd events in the YAML frontmatter. Ensure your SKILL.md defines the event, matcher, and command properly, as missing or malformed definitions will prevent hooks from triggering.