agent-tool-builder

Design JSON Schema definitions and error-handling protocols for LLM agent tools.

Updated Jan 12, 2026
One-click install
npx skills add https://github.com/giosuetedeschi-spec/bobu-website --skill agent-tool-builder-giosuetedeschi-spec
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: agent-tool-builder
Source: https://github.com/giosuetedeschi-spec/bobu-website/tree/main/.claude/skills/agent-tool-builder
Command: npx skills add https://github.com/giosuetedeschi-spec/bobu-website --skill agent-tool-builder-giosuetedeschi-spec

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill addresses the common failure points in AI agent development, specifically preventing hallucinations and silent failures caused by poorly defined tool schemas and vague descriptions.

Core Features & Use Cases

  • Schema Optimization: Craft precise JSON Schemas that ensure LLMs understand input requirements and constraints.
  • Error Handling Design: Implement structured error responses that allow agents to self-correct and recover from failed tool calls.
  • Use Case: When building a customer support agent, use this skill to design a tool for order lookups that provides clear, actionable error messages if an order ID is invalid, preventing the agent from guessing or hallucinating status updates.

Quick Start

Use the agent-tool-builder skill to generate a robust JSON schema and error handling strategy for a new weather lookup tool.

Frequently Asked Questions about agent-tool-builder

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
Why does my LLM agent hallucinate parameters when using function calling?

LLM agents hallucinate parameters when function calling due to poorly defined JSON Schemas and vague descriptions. You can prevent this by crafting precise schema definitions with clear input constraints, ensuring the LLM understands exact parameter requirements.

How do I design error handling for AI agent tools?

Design error handling for AI agent tools by implementing structured error responses that allow agents to self-correct. Provide clear, actionable error messages when tool calls fail, enabling the agent to recover and retry operations without hallucinating results.

What is MCP compliance for agent tool schemas?

MCP compliance for agent tool schemas ensures your function definitions meet industry standards for model context protocol. Adhering to MCP standards minimizes agent hallucinations and silent execution failures by enforcing unambiguous JSON Schema definitions.

How do I create a JSON Schema for an LLM tool?

Create a JSON Schema for an LLM tool by defining explicit parameter types, constraints, and descriptive documentation. Optimizing the schema ensures the model understands input requirements, improving function-calling accuracy and preventing invalid parameter submissions.

Can I use this approach to build a customer support agent tool?

Yes, you can use this approach to build customer support agent tools like order lookups. It helps design schemas that provide clear, actionable error messages if an order ID is invalid, preventing the agent from guessing or hallucinating status updates.