Content
70%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a well-structured interactive planning skill with excellent workflow clarity and progressive disclosure. Its main weaknesses are moderate verbosity in the introductory sections (explaining concepts Claude already knows) and a lack of concrete, executable code examples — the skill describes what to build but never shows a single implementation snippet, which is a notable gap for a coding-focused skill.
Suggestions
Add at least one concrete, executable code example showing a minimal sandbox executor implementation (e.g., a quickjs-emscripten executor in TypeScript or a goja executor in Go) so Claude has a reference pattern to adapt.
Trim the 'What is Code Mode?' section significantly — Claude already understands context windows, token costs, and the concept of processing data server-side. A 1-2 sentence summary would suffice.
Add a minimal code example for the MCP tool handler showing the DATA injection pattern and the reduction measurement output format, rather than only describing it in prose.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill includes some unnecessary explanation (e.g., the 'What is Code Mode?' section explains concepts Claude already understands like context windows and token consumption). The sandbox tables are useful but the introductory paragraphs could be significantly tightened. However, the structured tables and step-by-step format are reasonably efficient. | 2 / 3 |
Actionability | The skill provides a clear interactive planning framework and good structural guidance (what the tool accepts, what the executor does, implementation order), but lacks any executable code examples. There are no concrete code snippets for the sandbox executor, tool handler, or wiring — only descriptions of what they should do. For a skill about implementing code, the absence of even one reference implementation is a significant gap. | 2 / 3 |
Workflow Clarity | The 5-step workflow is clearly sequenced with explicit confirmation checkpoints ('confirm before moving on', 'present the plan to the user and confirm before implementing'). The implementation order within Step 4 is well-defined, and Step 5 provides a verification/benchmark phase. The interactive nature with user confirmation at each step serves as a validation mechanism. | 3 / 3 |
Progressive Disclosure | The skill is well-structured as an overview with clear references to deeper content: sandbox-options.md for detailed tradeoffs and benchmark-pattern.md for the benchmark template. References are one level deep, clearly signaled, and the main document provides enough context (quick selection tables) to be useful without requiring the referenced files. | 3 / 3 |
Total | 10 / 12 Passed |