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hand-drawn-diagrams

Generate hand-drawn Excalidraw diagrams from a prompt — animated SVG, hosted edit link, and PNG export. Works with Claude Code, Codex, Gemini CLI, and any agent supporting standard skill paths.

55

Quality

62%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

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tessl review fix ./skills/hand-drawn-diagrams/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

57%

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

The body is a thin catalogue/wrapper entry: well-organized and lean, but it mostly advertises an upstream skill rather than instructing how to produce diagrams, offering little executable guidance for the core task. Its strongest aspect is progressive disclosure; its weakest is actionability.

Suggestions

Replace the duplicated "What it does" paragraph with a concise one-line summary, or remove it and rely on the frontmatter description, to tighten token efficiency.

Add at least one concrete, runnable example or command for the core diagram-generation flow (e.g., how to invoke the skill and where outputs land) rather than only pointing to the upstream README.

Number the install/invoke steps explicitly and add a verification checkpoint (e.g., confirm the skill is installed before invoking) so the workflow has clear sequence and feedback.

DimensionReasoningScore

Conciseness

The body is lean and under 50 lines, but the "What it does" section duplicates the full description sentence verbatim, adding tokens that earn little value.

2 / 3

Actionability

It provides one concrete command (`open https://github.com/...`) and names trigger phrases, but gives no executable guidance for the core task (generating SVG/edit-link/PNG), instead deferring vaguely to the upstream README.

2 / 3

Workflow Clarity

A loose sequence is implied (advertise → install upstream bundle → invoke by name/trigger), but steps are not numbered and there are no validation checkpoints, which fits the score-2 anchor.

2 / 3

Progressive Disclosure

At under 50 lines with no bundle files, the content is organized into clearly labeled sections (What it does, Source, How to use) with a single one-level-deep external pointer to the upstream repo, matching the simple-skill guidance.

3 / 3

Total

9

/

12

Passed

Description

67%

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 specific and distinctive, naming concrete outputs (animated SVG, edit link, PNG) and a clear Excalidraw niche. Its main weakness is the missing explicit "when to use" guidance, which caps completeness, and trigger variations that live only in the separate triggers field.

Suggestions

Add an explicit "Use when..." clause to the description (e.g., "Use when the user asks for hand-drawn, sketch, or whiteboard diagrams, or mentions Excalidraw") to lift completeness to 3.

Fold one or two common trigger variations ("sketch diagram", "whiteboard diagram") into the description text so natural keywords are covered there, not only in the triggers field.

DimensionReasoningScore

Specificity

"Generate hand-drawn Excalidraw diagrams from a prompt — animated SVG, hosted edit link, and PNG export" lists multiple specific concrete actions, matching the score-3 anchor.

3 / 3

Completeness

It clearly states what the skill does but lacks an explicit "Use when..." clause or equivalent trigger guidance, so per the judging guideline completeness is capped at 2.

2 / 3

Trigger Term Quality

The description text includes natural terms like "Excalidraw", "diagrams", and "hand-drawn", but common variations a user would say ("sketch diagram", "whiteboard diagram") only appear in the separate triggers field, not the description itself.

2 / 3

Distinctiveness Conflict Risk

"Hand-drawn Excalidraw diagrams" carves out a clear niche with distinct triggers that are unlikely to fire for unrelated skills.

3 / 3

Total

10

/

12

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.

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository
nexu-io/open-design
Reviewed

Table of Contents

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