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.
85
81%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
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 completeness, clearly distinguishing itself from general JavaScript/TypeScript Workers skills. Its main weakness is that it could be more specific about the concrete actions it enables (e.g., compiling, configuring, debugging WASM modules) rather than just naming the domain and languages.
Suggestions
Add specific concrete actions like 'compile Rust to WASM targets, configure Python Workers with wrangler, optimize and debug WebAssembly modules' to improve specificity.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (Workers development) and mentions specific languages (Rust, Python, WebAssembly), but doesn't list concrete actions like 'compile Rust to WASM', 'configure wrangler for Python workers', or 'optimize WASM module performance'. The actions are implied rather than explicitly stated. | 2 / 3 |
Completeness | Clearly answers both 'what' (multi-language Workers development with Rust, Python, and WebAssembly) and 'when' (explicit 'Use when' clause covering building Workers in non-JS/TS languages or integrating WASM modules for performance-critical code). | 3 / 3 |
Trigger Term Quality | Includes strong natural trigger terms: 'Rust', 'Python', 'WebAssembly', 'WASM', 'Workers', 'performance-critical code', and 'languages other than JavaScript/TypeScript'. These cover the terms users would naturally use when seeking help with non-JS Workers development. | 3 / 3 |
Distinctiveness Conflict Risk | Clearly carves out a distinct niche by explicitly scoping to non-JavaScript/TypeScript Workers development and WASM integration, which differentiates it from a general Workers/JS skill. The language-specific triggers (Rust, Python, WASM) make conflicts unlikely. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
72%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a solid multi-language Workers skill with excellent actionability through complete, executable code examples for Rust, Python, and WASM integration. The progressive disclosure is well-handled with clear reference pointers. The main weakness is the missing build/deploy/validation workflow steps—after writing the code, Claude doesn't know how to build the WASM, test it, or deploy it, which is a significant gap for a multi-step development process.
Suggestions
Add explicit build and deploy steps after the Rust code example (e.g., `wasm-pack build --target bundler`, `npx wrangler deploy`) with a validation checkpoint to verify the WASM output.
Trim the Top 10 Errors table to focus on multi-language-specific errors only, removing generic ones like 'Exceeded CPU time limit' that apply to all Workers.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The language comparison table and quick decision tree add useful context, but the top 10 errors table is quite verbose and some entries are generic (e.g., 'Exceeded CPU time limit' applies to all Workers, not just multi-lang). The performance tips section is lean but somewhat obvious for Claude. | 2 / 3 |
Actionability | Provides fully executable code examples for Rust (complete Cargo.toml + lib.rs), Python (pyproject.toml + entry.py), and WASM integration in TypeScript. The bash commands for project setup are copy-paste ready. | 3 / 3 |
Workflow Clarity | The Rust quick start has a clear sequence (install → create → configure → code), but there are no validation or build steps shown. Missing: how to actually build and deploy the Rust worker (wasm-pack build command, wrangler deploy), and no verification steps after building WASM output. | 2 / 3 |
Progressive Disclosure | Well-structured with a clear overview, quick decision guide, language-specific sections, and a 'When to Load References' table pointing to one-level-deep reference files. The 'See Also' section provides clear cross-references to related skills. | 3 / 3 |
Total | 10 / 12 Passed |
Validation
100%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
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