Content
32%Scale 1-5Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill reads more like a textbook chapter on tool design philosophy than an actionable skill for Claude. It is excessively verbose, repeatedly explaining concepts Claude already knows (what APIs are, why good naming matters, what contracts mean), while lacking concrete workflows with validation steps. The few code examples are helpful but insufficient to offset the large amount of abstract conceptual content that doesn't earn its token cost.
Suggestions
Cut the content by 60-70% by removing explanations of concepts Claude already knows (e.g., 'Tools are contracts between deterministic systems and non-deterministic agents' doesn't need multi-paragraph elaboration) and focus on the unique, non-obvious guidance like the consolidation principle decision framework and MCP naming requirements.
Add a concrete, step-by-step workflow for designing a tool with explicit validation checkpoints, e.g.: 1. Define the tool spec → 2. Validate against the 4-question checklist → 3. Test with sample agent requests → 4. Analyze failures → 5. Iterate on description.
Split detailed topics (architectural reduction, description engineering, response format optimization) into separate referenced files, keeping SKILL.md as a concise overview with clear navigation links.
Replace the abstract 'Tool Selection Framework' with a concrete decision tree or checklist that Claude can directly apply, including specific criteria for when to consolidate vs. separate tools.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill is severely verbose, extensively explaining concepts Claude already understands well (what tools are, what contracts mean, why consolidation works, basic API design principles). Multiple sections restate the same ideas in slightly different ways. The 'Tool-Agent Interface' section explains obvious concepts like 'tools are contracts' multiple times. The 'When to Use This Skill' section is duplicated at the top. Much of this content is general knowledge that doesn't need to be taught to Claude. | 2 / 5 |
Actionability | The skill provides some concrete examples (the get_customer tool definition, the MCP naming format, the optimize_tool_description function), but much of the content is abstract guidance and principles rather than executable steps. The code examples are illustrative but not truly copy-paste ready for building tools. The 'poor tool design' example is useful but the overall content leans heavily toward conceptual explanation rather than concrete, actionable instructions. | 3 / 5 |
Workflow Clarity | There is no clear multi-step workflow for actually designing or building a tool. The 'Tool Selection Framework' provides a numbered list but it's high-level and lacks validation checkpoints. The tool-testing agent pattern has a rough sequence but no verification steps. For a skill that involves designing tools (which can have significant downstream failure modes), there are no feedback loops or validation steps to ensure tool designs are correct before deployment. | 2 / 5 |
Progressive Disclosure | The content is a monolithic wall of text (~300+ lines) with no bundle files to support it. References to 'Architectural Reduction Case Study', 'Best Practices Reference', and related skills are mentioned but no actual files are provided. The content that could be split into separate files (detailed topics like architectural reduction, description engineering, response format optimization) is all inlined, making the skill unwieldy. | 2 / 5 |
Total | 9 / 20 Passed |