Does it support the Model Context Protocol (MCP)?

Yes, it incorporates the MCP standard, which is the emerging industry standard for connecting AI agents to various data sources and tools.

How does this skill improve tool reliability?

It emphasizes explicit error handling and precise schema descriptions, ensuring the LLM receives actionable feedback when a tool fails and understands exactly how to format inputs.

What is the primary goal of the Agent Tool Builder skill?

The primary goal is to provide the design patterns and best practices needed to create clear, unambiguous tools that AI agents can use without hallucinating or failing silently.

Why are tool descriptions more important than implementation code?

The LLM never sees the underlying code; it only interacts with the tool via the schema and description. A well-coded tool will still fail if the LLM doesn't understand when or how to call it.

Agent Tool Builder

Name: Agent Tool Builder
Author: claudiodearaujo

byclaudiodearaujo

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API Development

Architects robust tool schemas and descriptions to minimize agent hallucinations and optimize function-calling performance.

The Agent Tool Builder skill transforms how AI agents interact with external systems by prioritizing the design of tool schemas and descriptions over raw implementation. It provides expert guidance on creating precise JSON Schemas, writing documentation that helps LLMs understand tool utility, and implementing the Model Context Protocol (MCP) standard. By focusing on explicit error handling and input validation, this skill ensures that agents operate reliably, avoid infinite loops, and utilize tokens efficiently during complex workflows.

Key Features

01Input validation and example mapping

02Model Context Protocol (MCP) integration

03LLM-optimized description writing

04Advanced tool error recovery patterns

05JSON Schema design optimization

061 GitHub stars

Use Cases

01Building custom MCP servers to extend agent capabilities

02Designing function-calling interfaces for complex backend APIs

03Reducing agent failure rates in automated production workflows

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add claudiodearaujo/sistema-de-narra-o-de-livro agent-tool-builder

For use in Claude.ai and ChatGPT

Download Skill