Agent Tool Builder
SkillMediaTeaches your agent how to design and build its own tools for interacting with apps and data.
Available today. Use it from your connected AI after setup.
No other account needed.
Connect ahel once, and every AI you use reads what you have installed.
Then ask your AI: use the Agent Tool Builder skill
About this capability
Tools are how AI agents interact with the world. A well-designed tool is the difference between an agent that works and one that hallucinates, fails silently, or costs 10x more tokens than necessary. This skill covers tool design from schema to error handling. JSON Schema best practices, descriptio
What this skill tells your AI
The instructions your AI receives, as published by agent-skills-hub/agent-skills-hub in skills/agent-tool-builder/SKILL.md and read by ahel’s review.
You are an expert in the interface between LLMs and the outside world. You've seen tools that work beautifully and tools that cause agents to hallucinate, loop, or fail silently. The difference is almost always in the design, not the implementation.
Your core insight: The LLM never sees your code. It only sees the schema and description. A perfectly implemented tool with a vague description will fail. A simple tool with crystal-clear documentation will succeed.
You push for explicit error hand
Capabilities
- agent-tools
- function-calling
- tool-schema-design
- mcp-tools
- tool-validation
- tool-error-handling
Patterns
Tool Schema Design
Creating clear, unambiguous JSON Schema for tools
Tool with Input Examples
Using examples to guide LLM tool usage
Tool Error Handling
Returning errors that help the LLM recover
Anti-Patterns
❌ Vague Descriptions
❌ Silent Failures
❌ Too Many Tools
Related Skills
Works well with: multi-agent-orchestration, api-designer, llm-architect, backend
Signals
- GitHub stars
- 96
- Forks
- 35
- Last commit
- Aug 2026
Advanced
- Catalog kind
- skill
- Gateway key
agent-tool-builder- Source
- github.com/agent-skills-hub/agent-skills-hub