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image-gen

Generate images, charts, plots, and visualizations. Use when the user asks to draw, plot, chart, visualize data, or create images.

78

Quality

100%

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SecuritybySnyk

Passed

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SKILL.md
Quality
Evals
Security

Quality

Content

100%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 content is a concise, fully executable guide with well-organized sections and an explicit critical sequencing constraint for displaying generated images. It appropriately avoids over-explanation and bundle files for a simple skill.

DimensionReasoningScore

Conciseness

The body is lean with minimal preamble ("Generate images in the headless sandbox using Python libraries.") and tight bullet guidelines; it does not explain concepts Claude already knows and every token earns its place.

5 / 5

Actionability

It provides complete, copy-paste-ready code for matplotlib, PIL, and inline base64 display, covering the common cases including the required headless `Agg` backend.

5 / 5

Workflow Clarity

For this simple single-purpose skill the sequence is unambiguous: generate the image then output base64 inline, with the explicit constraint "Do this in the same exec call as the image generation." No destructive or batch operations require validation checkpoints.

5 / 5

Progressive Disclosure

Under 50 lines with no need for external references, the content is organized into clear sections (Available Libraries, Displaying Images, Guidelines), satisfying the simple-skill exception for a top score.

5 / 5

Total

20

/

20

Passed

Description

100%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 is concise, third-person, and clearly states both capabilities and explicit trigger conditions with natural user phrasing. It is a strong, well-distinguished description.

DimensionReasoningScore

Specificity

"Generate images, charts, plots, and visualizations" lists multiple specific concrete output types with comprehensive coverage, matching the top anchor.

5 / 5

Completeness

It explicitly answers both what ("Generate images, charts, plots, and visualizations") and when ("Use when the user asks to draw, plot, chart, visualize data, or create images") with concrete trigger phrases.

5 / 5

Trigger Term Quality

"Use when the user asks to draw, plot, chart, visualize data, or create images" covers natural terms including synonyms (draw/plot/chart/visualize) that users would actually say.

5 / 5

Distinctiveness Conflict Risk

The image-generation niche has distinct triggers (draw, plot, chart, visualize) and minimal overlap risk with other skills, matching the clear-niche anchor.

5 / 5

Total

20

/

20

Passed

Validation

81%

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

Validation13 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

metadata_field

'metadata' should map string keys to string values

Warning

relative_links

Relative link issues: 1 suspicious

Warning

Total

13

/

16

Passed

Repository
fastclaw-ai/fastclaw
Reviewed

Table of Contents

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