async-expert

Expert in asynchronous programming patterns across languages (Python asyncio, JavaScript/TypeScript promises, C# async/await, Rust futures). Use for concurrent programming, event loops, async patterns, error handling, backpressure, cancellation, and performance optimization in async systems.

Quality

92%

Does it follow best practices?

Impact

—

No eval scenarios have been run

Securityby

Passed

No known issues

Quality

Content

85%

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

This is a comprehensive and well-structured async programming skill with excellent actionability through executable code examples and clear workflow guidance. The main weakness is verbosity - the anti-hallucination protocol and summary sections add significant token overhead without proportional value, and some explanations could be more concise. The progressive disclosure and workflow clarity are strong.

Suggestions

Significantly reduce or remove Section 0 (Anti-Hallucination Protocol) - Claude already knows to verify APIs, and this section adds ~50 lines of overhead that could be condensed to 2-3 lines if needed at all.

Remove or condense Section 9 (Summary) - it largely repeats content from earlier sections and adds little value for token cost.

Tighten Section 2 (Overview) by removing the bullet list of expertise areas that Claude already possesses - focus only on project-specific conventions or non-obvious guidance.

Dimension	Reasoning	Score
Conciseness	The skill contains useful content but is verbose in places. The anti-hallucination protocol section (Section 0) is lengthy and somewhat redundant with Claude's existing capabilities. The summary section repeats information already covered. Some explanations could be tightened.	2 / 3
Actionability	Excellent executable code examples throughout in both Python and JavaScript. All patterns include copy-paste ready implementations with clear before/after comparisons. Test examples are complete and runnable with pytest.	3 / 3
Workflow Clarity	Clear TDD workflow with explicit steps (write test → implement → refactor → verify). Pre-implementation checklist provides explicit validation checkpoints across three phases. The workflow includes verification commands and feedback loops.	3 / 3
Progressive Disclosure	Well-structured with clear sections progressing from principles to implementation to patterns. References to external files (advanced-patterns.md, troubleshooting.md, anti-patterns.md) are clearly signaled and one level deep. Content is appropriately split between overview and detailed references.	3 / 3
	Total	11 / 12 Passed

Description

100%

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 strong skill description that effectively communicates both capabilities and usage triggers. It lists specific languages and their async implementations, includes natural developer terminology, and has an explicit 'Use for' clause with relevant trigger terms. The description is concise yet comprehensive, covering the async programming domain thoroughly.

Dimension	Reasoning	Score
Specificity	Lists multiple specific concrete actions and concepts: 'asyncio, promises, async/await, futures, event loops, error handling, backpressure, cancellation, performance optimization'. Covers specific languages and their async implementations.	3 / 3
Completeness	Clearly answers both what ('Expert in asynchronous programming patterns across languages') and when ('Use for concurrent programming, event loops, async patterns...'). The 'Use for' clause explicitly lists trigger scenarios.	3 / 3
Trigger Term Quality	Excellent coverage of natural terms users would say: 'async', 'asyncio', 'promises', 'async/await', 'futures', 'concurrent programming', 'event loops', 'backpressure', 'cancellation'. These are terms developers naturally use when seeking async help.	3 / 3
Distinctiveness Conflict Risk	Clear niche focused specifically on asynchronous/concurrent programming patterns. The specific language implementations (Python asyncio, JS promises, C# async/await, Rust futures) and specialized terms (backpressure, cancellation) make it highly distinct from general coding skills.	3 / 3
	Total	12 / 12 Passed

Validation

68%

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 / 16 Passed

Validation for skill structure

Criteria	Description	Result
skill_md_line_count	SKILL.md is long (587 lines); consider splitting into references/ and linking	Warning
description_trigger_hint	Description may be missing an explicit 'when to use' trigger hint (e.g., 'Use when...')	Warning
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	11 / 16 Passed

Repository: martinholovsky/claude-skills-generator
Commit: 1086ef2

Reviewed: 5 months ago

Table of Contents

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