Tool Design Skill

Design effective MCP tools and Claude Code integrations using the consolidation principle.

Core Insight

Fewer tools = Higher success rates

Vercel d0 achieved 80% → 100% success by reducing from 17 to 2 tools. This isn't coincidence—it's architecture.

The Consolidation Principle

Why Fewer Tools Work Better

1. Reduced decision space - Model selects correct tool more often
2. Simpler context - Less instruction text per tool
3. Better parameter handling - Focused parameters vs kitchen-sink
4. Clearer intent - Tool purpose is unambiguous