Metronome — Development skill for Claude Code

metronome

A Claude Code plugin that prevents Claude from taking shortcuts on repetitive tasks.

Problem

When Claude encounters repetitive tasks, it tends to declare "I'll work efficiently" and then:

• Switches from step-by-step edits to bulk operations (e.g. sed one-liners)
• Breaks files, then runs git checkout to revert—losing unrelated uncommitted changes too

**Example**: Asked to fix comments across 20 files one by one, Claude processes 5 files correctly, then announces "I'll handle the rest efficiently." It runs a `sed` command that corrupts files, notices the breakage, and runs `git checkout` to undo everything—including your other uncommitted changes.

This plugin detects such declarations and blocks the Bash tool call, reminding Claude to slow down.

Detected Phrases

Language	Pattern	Matches
English	efficien	efficient, efficiently, efficiency
日本語	効率	効率的, 効率化
中文	高效, 效率	(2 patterns required)
Deutsch	effizien	effizient, Effizienz
Français	efficac	efficace, efficacement, efficacité
Español / Português	eficien	eficiente, eficientemente, eficiencia
한국어	효율	효율적으로, 효율화
Русский	эффектив	эффективно, эффективность

Guidance

When triggered, Claude receives:

Slow down.

Read the current task, execute it, verify the result, then move to the next.

No prohibitions. Only positive instructions.

Installation

Requires [Claude Code](https://claude.ai/code) (this is a Claude Code plugin)

# 1. Start Claude Code
claude

# 2. Install the marketplace
/plugin marketplace add shinpr/metronome

# 3. Install plugin
/plugin install metronome@metronome

# 4. Restart session (required)
# Exit and restart Claude Code

Structure

metronome/
├── .claude-plugin/
│   ├── marketplace.json
│   └── plugin.json
├── hooks/
│   └── hooks.json
├── scr