utilities

hook-authoring

Authors and maintains equivalent hook configs across Claude Code, Codex, Gemini CLI, and Goose.

Keeps hook configurations equivalent and maintainable across Claude Code, OpenAI Codex CLI, Google Gemini CLI, and Goose. Authors new hooks from a single description, migrates between platforms, audits parity, and validates config syntax.

Difficulty: beginner
Input: conversation
Output: document
Needs: none

What it needs

event — Hook event (PreToolUse, PostToolUse, SessionStart, Stop)
matcher — Regex matcher for the tool name or command
command — Shell command to execute
platforms — Target platforms (default all supported)
vault_root — Path to vault root (defaults to current directory)
source_path — Path to the source config file
target_platform — Target platform (claude-code, codex, gemini-cli, goose)
config_path — Path to the config file to validate

What you get

.claude/settings.json, .codex/hooks.json, .gemini/settings.json, .agents/plugins/*/hooks/hooks.json
Config snippet for the target platform, with migration notes for unsupported features
Hooks present on one platform but missing on others, with fix commands
Syntax check results, schema compliance, and common error fixes
hook-configs (json/toml)

Ask it like this

add a hook
keep hooks in sync
migrate hooks to Codex
audit hook parity
validate my hook config.