tool-design
Build tools that agents can use effectively, including architectural reduction patterns. Use when creating new tools for agent systems, debugging tool-related failures or misuse, or optimizing existing tool sets for better agent performance.
npx skills add majiayu000/claude-skill-registry --skill tool-design-sickn33-antigravity-awesome --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
## When to Use This Skill Build tools that agents can use effectively, including architectural reduction patterns Use this skill when working with build tools that agents can use effectively, including architectural reduction patterns. # Tool Design for Agents Tools are the primary mechanism through which agents interact with the world. They define the contract between deterministic systems and non-deterministic agents. Unlike traditional software APIs designed for developers, tool APIs must be designed for language models that reason about intent, infer parameter values, and generate calls from natural language requests. Poor tool design creates failure modes that no amount of prompt engineering can fix. Effective tool design follows specific principles that account for how agents perceive and use tools. ## When to Use Activate this skill when: - Creating new tools for agent systems - Debugging tool-related failures or misuse - Optimizing existing tool sets for better agent performance - Designing tool APIs from scratch - Evaluating third-party tools for agent integration - Standardizing tool conventions across a codebase ## Core Concepts Tools are contracts between deterministic
- When to Use This Skill
- When to Use
- Core Concepts
- Detailed Topics
- The Tool-Agent Interface
- The Consolidation Principle
- Architectural Reduction
- Tool Description Engineering
- Response Format Optimization
- Error Message Design
- Tool Definition Schema
- Tool Collection Design
- MCP Tool Naming Requirements
- Using Agents to Optimize Tools
What does the tool-design skill do?
Build tools that agents can use effectively, including architectural reduction patterns. Use when creating new tools for agent systems, debugging tool-related failures or misuse, or optimizing existing tool sets for better agent performance.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill tool-design-sickn33-antigravity-awesome --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.