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spritecook-polish-sprites

Inspect and polish SpriteCook sprites after generation or background removal. Use for broken or faint outlines, missing edge pixels, halos, and background debris, and before slicing or animating assets that need edge cleanup. Compare preserved alpha locally and save the selected threshold through MCP.

Quality

90%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

92%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.

An exemplary instruction skill: concrete commands and tool calls, a well-sequenced workflow with validation and feedback loops, and lean tool-specific explanations with no filler. Only the slightest tightening of the rationale section is possible.

DimensionReasoningScore

Conciseness

Efficient and prescriptive; explanations are limited to SpriteCook-specific behavior (preserved source, binary_alpha_v1 cutoff semantics) that Claude cannot know. Only minor trims are possible, e.g., 'Always work from the preserved source, not repeatedly from an already-thresholded preview' partly restates the prior paragraph.

4 / 5

Actionability

Fully executable: exact command with arguments and flags ('python scripts/compare_alpha.py --metadata asset.json --source preserved.png --current current.png --output-dir alpha-comparison', '--cutoffs 48 72 96 120 144'), exact tool calls ('get_asset_metadata(asset_id)', 'set_asset_alpha_cutoff(asset_id, cutoff)'), and named outputs cover the common cases.

5 / 5

Workflow Clarity

Clear 7-step sequence with explicit validation ('Download the returned output and verify it matches the selected candidate'), stop conditions (available=false, no improving candidate), URL-expiry refresh handling, and a feedback loop for refining around the best candidate.

5 / 5

Progressive Disclosure

A compact (~50 line), well-sectioned SKILL.md with no need for external reference files; the referenced bundle script (scripts/compare_alpha.py) exists, and section headers make navigation easy.

5 / 5

Total

19

/

20

Passed

Description

83%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 strong, well-scoped description with explicit what/when structure and natural trigger phrases tied to a distinct domain. It falls just short of top marks on capability coverage and synonym breadth.

Suggestions

Mention the targeted manual/scripted outline repair capability alongside threshold tuning to round out the 'what' coverage.

Add one or two common synonym phrases (e.g., 'rough or jagged edges', 'transparent fringe') to broaden natural trigger matching.

DimensionReasoningScore

Specificity

Lists several concrete actions ('Inspect and polish SpriteCook sprites', 'Compare preserved alpha locally and save the selected threshold through MCP') with only minor gaps in coverage (e.g., targeted outline repairs are not mentioned).

4 / 5

Completeness

Explicitly answers both what the skill does (inspect/polish sprites, compare preserved alpha, save the selected threshold) and when to use it ('Use for... before slicing or animating assets that need edge cleanup') with concrete trigger phrases.

5 / 5

Trigger Term Quality

Natural user phrases like 'broken or faint outlines, missing edge pixels, halos, and background debris' and 'before slicing or animating assets that need edge cleanup' give good keyword coverage; a few common synonyms (rough/jagged edges, transparency problems) are missing.

4 / 5

Distinctiveness Conflict Risk

'SpriteCook sprites', 'preserved alpha', and 'save the selected threshold through MCP' establish a clear niche, but there is minor overlap risk with sibling SpriteCook skills (slicing, animation, upload) and generic image-cleanup terms like 'halos'.

4 / 5

Total

17

/

20

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.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository

SpriteCook/skills

Path

skills/spritecook-polish-sprites/SKILL.md

Reviewed

Table of Contents

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