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skill-creator

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.

79

1.07x
Quality

70%

Does it follow best practices?

Impact

96%

1.07x

Average score across 3 eval scenarios

SecuritybySnyk

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./skills/coding-agents-and-ides/skill-creator/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

67%Weight 40%Scale 1-5

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

The body is well-structured and actionable with concrete commands and a clear validated workflow, but it carries notable verbosity and could lean more on its references to keep the overview tighter.

Suggestions

Tighten restated passages such as the 'avoid duplication' paragraph and the degrees-of-freedom bridge metaphor to remove redundant explanations of concepts Claude already knows.

Render the packaging validation as an explicit checklist (validate -> fix -> re-validate -> only-when-valid package) to lift workflow clarity toward the score-5 anchor.

Move more of the inline conceptual exposition (anatomy, progressive-disclosure patterns) into a reference file so SKILL.md reads as a leaner overview pointing to detail.

DimensionReasoningScore

Conciseness

Mostly useful but includes several padded or restated passages (the 'avoid duplication' paragraph restates one idea three ways, the bridge metaphor, and repeated 'context window is a public good' framing) that could be tightened.

3 / 5

Actionability

Provides copy-paste-ready commands (init_skill.py and package_skill.py with arguments), concrete worked examples (pdf-editor, frontend-webapp-builder, big-query), and explicit file trees, with only minor gaps.

4 / 5

Workflow Clarity

Clear 6-step sequence (understand, plan, initialize, edit, package, iterate) with an explicit packaging validation checkpoint and fix/retry feedback loop plus a script-testing requirement, though checkpoints are not rendered as an explicit checklist.

4 / 5

Progressive Disclosure

Well-signaled one-level-deep references to real files (references/workflows.md, references/output-patterns.md) and real scripts, but the body itself is a comprehensive 352-line guide rather than a lean overview pointing outward.

4 / 5

Total

15

/

20

Passed

Description

73%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description clearly conveys both purpose and trigger conditions with natural phrasing and a distinct niche, though the 'what' is somewhat general and lacks synonym coverage.

DimensionReasoningScore

Specificity

Names the domain ('creating effective skills') and 1-2 concrete actions ('create a new skill', 'update an existing skill') plus extension types, but does not list several specific concrete actions as the score-4 anchor requires.

3 / 5

Completeness

Explicitly answers both what ('Guide for creating effective skills...') and when ('should be used when users want to create a new skill (or update an existing skill)'); the when is explicit but the what remains somewhat general rather than a comprehensive action list.

4 / 5

Trigger Term Quality

Includes natural trigger phrases users would actually say ('create a new skill', 'update an existing skill'), but misses common synonyms like make/build/design a skill that the score-5 anchor expects.

4 / 5

Distinctiveness Conflict Risk

Occupies a clear meta niche (skill creation) with distinct triggers and minimal overlap risk against other skills, matching the score-5 anchor.

5 / 5

Total

16

/

20

Passed

Validation

87%

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

Validation14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

relative_links

Relative link issues: 6 missing

Warning

referenced_paths_exist

Referenced path issues: 12 missing

Warning

Total

14

/

16

Passed

Repository
eigent-ai/agent-skills
Reviewed

Table of Contents

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