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axiom-validate-screenshots

Use when the user mentions App Store screenshot validation, screenshot review, checking screenshots before submission, or verifying screenshot dimensions and content.

64

Quality

75%

Does it follow best practices?

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SecuritybySnyk

Low

Low-risk findings worth noting

Fix and improve this skill with Tessl

tessl review fix ./axiom-codex/skills/axiom-validate-screenshots/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

77%

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

The skill body is highly actionable and workflow-clear, with genuinely non-obvious domain knowledge and explicit decision gates throughout. Its main weaknesses are verbosity from duplicated report templates and a monolithic structure with no progressive disclosure.

Suggestions

Consolidate the two report templates ("Generate Report" and "When No Issues Found") into a single parameterized template to remove structural duplication.

Move the full report templates and/or the detailed issue taxonomy into a reference file (e.g. references/REPORT_TEMPLATE.md) and link to it from SKILL.md to enable progressive disclosure.

DimensionReasoningScore

Conciseness

The body is mostly high-value domain knowledge (exact pixel dimensions, the 9:41 convention, guideline citations) and assumes Claude's competence, but it carries two largely redundant report templates and a repeated device-coverage table that could be consolidated.

2 / 3

Actionability

It gives executable commands (`sips -g pixelWidth -g pixelHeight`), concrete Glob patterns, an exact dimension table, and specific issue examples ("Lorem ipsum", "TODO", "STAGING"), making the guidance copy-paste ready.

3 / 3

Workflow Clarity

The five numbered steps are clearly sequenced with explicit gates — "Do not proceed without a folder path", "If 0 images found, report and stop", and the >20 cap with user notification — plus a "When Uncertain" fallback for ambiguous cases.

3 / 3

Progressive Disclosure

It is well-organized internally with clear headers, but it is a ~200-line monolithic file with no external references; the verbose report templates and issue taxonomy are inline content that could be split into reference files.

2 / 3

Total

10

/

12

Passed

Description

72%

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 has strong trigger terms and a clear, low-conflict niche, but it leads with the "Use when" clause and never explicitly states what the skill does, leaving the "what" only implied. Tightening it to state the concrete actions first would raise both specificity and completeness.

Suggestions

Lead with a concrete action statement before the trigger clause, e.g. "Reviews App Store screenshots for compliance, dimension, and content issues before submission. Use when the user mentions..."

Name the specific checks performed (dimension validation, placeholder/debug-artifact detection, competitor-reference checks) so the "what" is explicit rather than implied by trigger verbs.

DimensionReasoningScore

Specificity

Names the domain and several actions ("App Store screenshot validation, screenshot review, checking screenshots before submission, or verifying screenshot dimensions and content"), but these verbs appear only as trigger phrases rather than a clear statement of what the skill performs, so it is not a comprehensive action list.

2 / 3

Completeness

The "when" is explicit ("Use when the user mentions..."), but the "what does this do" is only implied through trigger verbs rather than stated as concrete actions, so it does not clearly answer both.

2 / 3

Trigger Term Quality

Covers natural terms a user would actually say — "screenshot validation", "screenshot review", "checking screenshots before submission", "verifying screenshot dimensions and content" — giving good keyword coverage.

3 / 3

Distinctiveness Conflict Risk

The narrow "App Store screenshot validation" niche with specific submission-related triggers makes it clearly distinguishable and unlikely to fire for unrelated skills.

3 / 3

Total

10

/

12

Passed

Validation

100%

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

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
CharlesWiltgen/Axiom
Reviewed

Table of Contents

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