cloudflare-workers-multi-lang

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.

Quality

77%

Does it follow best practices?

Impact

—

No eval scenarios have been run

Securityby

Passed

No known issues

Fix and improve this skill with Tessl

tessl review fix ./plugins/cloudflare-workers/skills/cloudflare-workers-multi-lang/SKILL.md

Quality

Content

64%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The skill provides good actionable code examples across Rust, Python, and WASM integration, making it practically useful. However, it lacks explicit build/deploy/validate workflows and includes some verbose content (the error table, comparison table) that could be more concise or moved to reference files. The referenced files don't exist in the bundle, weakening the progressive disclosure structure.

Suggestions

Add explicit build and deploy steps with validation checkpoints (e.g., 'Run wasm-pack build --target bundler, verify output in pkg/, then wrangler deploy')

Move the Top 10 errors table to a reference file (e.g., references/common-errors.md) to reduce the main skill's token footprint

Trim the language comparison table and quick decision section—Claude can reason about language tradeoffs; focus on the non-obvious Cloudflare-specific constraints

Dimension	Reasoning	Score
Conciseness	The language comparison table and decision tree are useful but the error table is quite verbose and some entries are somewhat obvious. The overall content is reasonably efficient but could be tightened—the comparison table explains things Claude likely knows (e.g., what JavaScript is best for), and the performance tips section is fairly generic.	2 / 3
Actionability	Provides fully executable code examples for Rust, Python, and WASM integration including Cargo.toml configuration, complete lib.rs, Python entry point, and TypeScript WASM loading. The bash commands for project setup are copy-paste ready.	3 / 3
Workflow Clarity	The Rust quick start has a sequence (install, create, configure, write code) but lacks explicit build/deploy steps and validation checkpoints. There's no 'build and verify' step after writing the code, no error recovery guidance for build failures, and no clear end-to-end workflow from creation to deployment.	2 / 3
Progressive Disclosure	References to external files (references/rust-workers.md, references/python-workers.md, etc.) are listed in a table with clear load conditions, and cross-references to other skills are provided. However, no bundle files exist to support these references, and the main content includes substantial inline detail (full error table, complete code examples) that could be split into reference files.	2 / 3
	Total	9 / 12 Passed

Description

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 defining both what the skill does and when to use it. The explicit contrast with JavaScript/TypeScript helps distinguish it from related skills. The main weakness is that it could list more specific concrete actions beyond the general 'development' and 'integrating' verbs.

Suggestions

Add specific concrete actions such as 'compile Rust to WASM targets', 'configure Python Workers with wrangler', or 'optimize WASM module bindings' 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 specifying non-JavaScript/TypeScript Workers development and WASM integration, which explicitly differentiates it from a general Workers/JS skill. The language-specific triggers (Rust, Python, WASM) make conflicts unlikely.	3 / 3
	Total	11 / 12 Passed

Validation

100%

Warnings & errors only

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.

Repository: secondsky/claude-skills
Commit: 5e92b71

Reviewed: about 1 month ago

Table of Contents

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