image

Image renderer for json-render that turns JSON specs into SVG and PNG images via Satori. Use when working with @json-render/image, generating OG images from JSON, creating social cards, or rendering AI-generated image specs.

Quality

100%

Does it follow best practices?

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Adds up to 20 points to the overall score

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Securityby

Passed

No findings from the security scan

Quality

Content

100%

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

A tight, executable reference: copy-paste TypeScript examples, compact component/export tables, and clear organization with no unnecessary padding. It scores at the top of every dimension.

Dimension	Reasoning	Score
Conciseness	The body is lean — it avoids explaining what JSON/SVG/PNG or libraries are, and presents everything as tight code plus compact tables. Every token earns its place.	3 / 3
Actionability	Provides fully executable TypeScript (renderToPng with fonts, defineCatalog, a custom Badge component) plus exact component and export tables, making it copy-paste ready.	3 / 3
Workflow Clarity	This is a single-action rendering skill rather than a destructive/batch multi-step process, and the action is unambiguous with concrete examples; per the simple-skill guideline that warrants a 3.	3 / 3
Progressive Disclosure	Content is well under 50 lines with cleanly organized sections and no need for external references (no bundle files present), satisfying the simple-skill criterion for a 3.	3 / 3
	Total	12 / 12 Passed

Description

100%

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 well-crafted description that states concrete capabilities, explicit trigger conditions, and a distinct niche in third-person voice. It scores at the top of every dimension.

Dimension	Reasoning	Score
Specificity	Names multiple concrete actions — 'turns JSON specs into SVG and PNG images via Satori' — specifying both output formats and the rendering engine, matching the level-3 anchor listing specific concrete actions.	3 / 3
Completeness	Explicitly answers both what ('turns JSON specs into SVG and PNG images via Satori') and when ('Use when working with @json-render/image, generating OG images...') with third-person voice, matching the level-3 anchor.	3 / 3
Trigger Term Quality	Covers natural user terms — 'generating OG images from JSON', 'creating social cards', 'rendering AI-generated image specs', '@json-render/image' — giving good coverage of phrases a user would actually say.	3 / 3
Distinctiveness Conflict Risk	Has a clear niche — json-render/image rendering via Satori with OG/social-card triggers — making it unlikely to fire for unrelated skills.	3 / 3
	Total	12 / 12 Passed

Validation

100%

Warnings & errors only

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: vercel-labs/json-render
Path: skills/image/SKILL.md
Commit: 9d3dfc8

Reviewed: about 14 hours ago

Table of Contents

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