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mermaid-studio

Expert Mermaid diagram creation, validation, and rendering with dual-engine output (SVG/PNG/ASCII). Supports all 20+ diagram types including C4 architecture, AWS architecture-beta with service icons, flowcharts, sequence, ERD, state, class, mindmap, timeline, git graph, sankey, and more. Features code-to-diagram analysis, batch rendering, 15+ themes, and syntax validation. Use when users ask to create diagrams, visualize architecture, render mermaid files, generate ASCII diagrams, document system flows, model databases, draw AWS infrastructure, analyze code structure, or anything involving "mermaid", "diagram", "flowchart", "architecture diagram", "sequence diagram", "ERD", "C4", "ASCII diagram". Do NOT use for non-Mermaid image generation, data plotting with chart libraries, or general documentation writing.

80

Quality

Does it follow best practices?

Impact

No eval scenarios have been run

SecuritybySnyk

Passed

No known issues

SKILL.md
Quality
Evals
Security

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 high-quality, expert skill body: concise and dense, fully actionable with executable examples and exact commands, a clearly sequenced workflow with validation feedback loops, and clean one-level-deep progressive disclosure to real bundle files. No significant weaknesses.

DimensionReasoningScore

Conciseness

Lean and dense: tables and decision matrices carry information without prose padding, and it assumes Claude's competence (no 'what is a flowchart' explanations). Every section earns its tokens; it is not the verbose, concept-explaining anchor.

3 / 3

Actionability

Provides fully executable material — complete %%{init} blocks, copy-paste mermaid examples, and exact CLI invocations like 'node $SKILL_DIR/scripts/render.mjs -i diagram.mmd -o diagram.svg --icons logos' — matching the copy-paste-ready anchor.

3 / 3

Workflow Clarity

Clear five-step sequence (Understand, Create, Validate, Render, Code-to-Diagram) with an explicit validation checkpoint in Step 3 and a feedback loop ('If validation fails... Fix the syntax and re-validate. Maximum 3 fix attempts'), satisfying the clear-sequence-with-feedback anchor.

3 / 3

Progressive Disclosure

The body is an overview that points one level deep to real, verified reference files (c4-architecture.md, aws-architecture.md, themes.md, etc.) and scripts, with a 'When to Load References' table clearly signaling each — matching the well-signaled one-level-deep anchor.

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 strong, well-scoped description: it states concrete capabilities, gives natural-language triggers, answers both what and when, and disambiguates via a negative guardrail. No meaningful weakness to address.

DimensionReasoningScore

Specificity

Names many concrete actions — 'creation, validation, and rendering with dual-engine output (SVG/PNG/ASCII)', 'code-to-diagram analysis, batch rendering, 15+ themes, and syntax validation' — and enumerates 20+ specific diagram types, matching the 'lists multiple specific concrete actions' anchor.

3 / 3

Completeness

Explicitly answers both 'what' (capabilities listed) and 'when' via a clear 'Use when users ask...' clause, and adds a 'Do NOT use for...' guardrail — clearly the both-what-and-when anchor.

3 / 3

Trigger Term Quality

Includes a rich set of natural user phrasings ('create diagrams', 'visualize architecture', 'render mermaid files', 'generate ASCII diagrams') plus a quoted keyword list ('mermaid', 'diagram', 'flowchart', 'ERD', 'C4'), giving good coverage of terms a user would actually say.

3 / 3

Distinctiveness Conflict Risk

Occupies a clear Mermaid-only niche with distinct triggers and an explicit negative clause ('Do NOT use for non-Mermaid image generation, data plotting...'), making wrong-skill conflicts unlikely.

3 / 3

Total

12

/

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
tech-leads-club/agent-skills
Reviewed

Table of Contents

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