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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.

64

Quality

77%

Does it follow best practices?

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SecuritybySnyk

Passed

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tessl review fix ./.github/skills/skill-creator/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

81%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.

A strong, well-structured meta-skill: the six-step creation process is clearly sequenced with validation built in, and both referenced scripts exist in the bundle. The main improvements are surfacing the unused quick_validate.py script with a runnable command and trimming a few redundant benefit/best-practice passages.

DimensionReasoningScore

Conciseness

The body is procedural and focused on skill-creation specifics Claude would not know, with only minor over-explanation (repeated 'Benefits' bullets and some overlap between the references best-practices and progressive-disclosure sections) that could be trimmed.

4 / 5

Actionability

It gives executable commands (`scripts/init_skill.py <skill-name> --path <output-directory>`, `scripts/package_skill.py <path/to/skill-folder> ./dist`) plus concrete worked examples, but validation is described only as something the packaging script does, and `scripts/quick_validate.py` is never surfaced with a runnable command.

4 / 5

Workflow Clarity

The six-step process is clearly sequenced with explicit skip conditions, and packaging includes a validation feedback loop: 'If validation fails, the script will report the errors and exit without creating a package. Fix any validation errors and run the packaging command again.'

5 / 5

Progressive Disclosure

Structure is good with clear headers and one-level-deep script references that resolve to real files (`scripts/init_skill.py`, `scripts/package_skill.py`), but `scripts/quick_validate.py` exists in the bundle without being referenced or linked from SKILL.md, a minor navigation gap.

4 / 5

Total

17

/

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.

A solid, third-person description with an explicit when-to-use clause and distinct triggers. Its main weakness is a thin what-clause: it names the domain and two actions but no concrete capability detail, leaving it slightly generic on specificity.

Suggestions

Add 1-2 concrete capabilities to the what-clause, e.g. 'Writes SKILL.md frontmatter and instructions, scaffolds bundled scripts/references/assets directories, and validates and packages skills for distribution.'

Broaden trigger coverage with natural synonyms users say, such as 'build a skill', 'make a skill', or 'turn this workflow into a skill'.

State the concrete outputs of the guide (skill structure, packaging to a distributable zip) so the what-clause answers what the skill produces, not just its topic.

DimensionReasoningScore

Specificity

The description names the domain ('creating effective skills') and states two actions ('create a new skill (or update an existing skill)'), but offers no further concrete actions, matching the anchor for 1-2 concrete actions without comprehensive coverage.

3 / 5

Completeness

Both are present: the what ('Guide for creating effective skills') and an explicit when clause ('This skill should be used when users want to create a new skill (or update an existing skill)...'). The what is thinner than the anchor-5 example, so it sits at the 'when could be more specific / what could be richer' level.

4 / 5

Trigger Term Quality

'create a new skill' and 'update an existing skill' are natural phrases users would say, giving good keyword coverage, but common synonyms such as 'build' or 'make a skill' are missing.

4 / 5

Distinctiveness Conflict Risk

Skill creation is a clear niche with distinct triggers ('new skill', 'update an existing skill'), so the risk of triggering for unrelated skills is minimal.

5 / 5

Total

16

/

20

Passed

Validation

93%

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

Validation — 15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

referenced_paths_exist

Referenced path issues: 12 missing

Warning

Total

15

/

16

Passed

Repository
cteyton/packmind
Reviewed

Table of Contents

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