Tool Use Skill

Comprehensive guide to implementing tool use with Claude, covering schema design, tool choice modes, multi-turn conversations, error handling patterns, and advanced features like extended thinking and strict schema conformance.

When to Use This Skill

Activate this skill when:

• Defining custom tools with JSON schemas
• Building agentic workflows with tool use
• Implementing tool result handling
• Building parallel vs sequential tool orchestration
• Requiring guaranteed schema conformance
• Implementing error recovery patterns
• Combining tools with extended thinking

Core Concepts

Tool Definition Schema