Multi-language Workers development with Rust, Python, and WebAssembly. Use when building Workers in languages other than JavaScript/TypeScript, or when integrating WASM modules for performance-critical code.
92
88%
Does it follow best practices?
Impact
100%
1.47xAverage score across 3 eval scenarios
Passed
No known issues
Quality
Discovery
89%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is a solid description with excellent trigger terms and clear 'when to use' guidance that distinguishes it from JavaScript/TypeScript Workers skills. The main weakness is the lack of specific concrete actions - it tells you what languages are supported but not what specific tasks the skill enables (e.g., compiling, configuring, debugging).
Suggestions
Add specific concrete actions like 'compile Rust to WASM', 'configure Python Workers bindings', 'optimize WASM module performance', or 'debug multi-language Worker deployments'
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (Workers development) and languages (Rust, Python, WebAssembly), but lacks specific concrete actions like 'compile WASM modules', 'configure bindings', or 'deploy multi-language workers'. | 2 / 3 |
Completeness | Clearly answers both what (multi-language Workers development with Rust, Python, WebAssembly) and when (building Workers in non-JS/TS languages, integrating WASM modules for performance) with explicit 'Use when' clause. | 3 / 3 |
Trigger Term Quality | Good coverage of natural terms users would say: 'Rust', 'Python', 'WebAssembly', 'WASM', 'Workers', 'performance-critical code'. These are terms developers would naturally use when seeking this functionality. | 3 / 3 |
Distinctiveness Conflict Risk | Clear niche focusing specifically on non-JavaScript/TypeScript Workers and WASM integration. The explicit exclusion of JS/TS and focus on Rust/Python/WASM creates distinct boundaries unlikely to conflict with general Workers skills. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
87%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-crafted skill with excellent conciseness and actionability. The comparison tables, error reference, and executable code examples provide immediate value. The main weakness is the lack of explicit validation steps in the build workflows, which is important for WASM compilation that can fail in non-obvious ways.
Suggestions
Add validation checkpoint after wasm-pack build (e.g., 'Verify build: check pkg/ directory contains .wasm and .js files')
Include error recovery guidance for common build failures in the Rust workflow (e.g., 'If wasm-pack fails: check Cargo.toml crate-type, verify wasm-bindgen versions match')
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Content is lean and efficient with well-organized tables, decision trees, and code examples. No unnecessary explanations of concepts Claude would already know - jumps straight to actionable content. | 3 / 3 |
Actionability | Provides fully executable code examples for both Rust and Python, complete with project setup commands, Cargo.toml configuration, and working code. The WASM integration example is copy-paste ready. | 3 / 3 |
Workflow Clarity | The Rust quick start shows a sequence (install, create, configure) but lacks explicit validation checkpoints. No verification steps after wasm-pack build or guidance on what to do if compilation fails. | 2 / 3 |
Progressive Disclosure | Excellent structure with clear overview, quick decision guide, error table, and well-signaled one-level-deep references to detailed docs. The 'When to Load References' table provides clear navigation. | 3 / 3 |
Total | 11 / 12 Passed |
Validation
90%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 10 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 10 / 11 Passed | |
90d6bd7
Table of Contents
If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.