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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.

Install with Tessl CLI

npx tessl i github:secondsky/claude-skills --skill workers-multi-lang
What are skills?

Overall
score

89%

Does it follow best practices?

Validation for skill structure

SKILL.md
Review
Evals

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 describes the domain well but doesn't enumerate 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'

DimensionReasoningScore

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-structured, concise skill that provides excellent actionable guidance for multi-language Workers development. The comparison tables and error reference are particularly valuable. The main weakness is the lack of explicit validation steps in the workflows, especially for WASM compilation which can fail in subtle ways.

Suggestions

Add validation checkpoints after wasm-pack build (e.g., 'Verify build succeeded: check for pkg/ directory and .wasm file')

Include error recovery guidance for common build failures in the Rust Quick Start section

DimensionReasoningScore

Conciseness

Content is lean and efficient with well-organized tables, decision trees, and code examples. No unnecessary explanations of concepts Claude already knows - jumps straight to actionable content.

3 / 3

Actionability

Provides fully executable code examples for both Rust and Python, complete with Cargo.toml/pyproject.toml configurations. The bash commands and code snippets are copy-paste ready.

3 / 3

Workflow Clarity

Steps are listed (install tools, create project, add config) but lack explicit validation checkpoints. No verification steps after WASM build or guidance on what to do if compilation fails.

2 / 3

Progressive Disclosure

Clear overview structure with a helpful 'When to Load References' table pointing to one-level-deep reference files. Content is appropriately split between quick start and detailed references.

3 / 3

Total

11

/

12

Passed

Validation

81%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation13 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata' field is not a dictionary

Warning

license_field

'license' field is missing

Warning

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

13

/

16

Passed

Reviewed

Table of Contents

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