mermaid-er-diagram-creator

Mermaid Er Diagram Creator - Auto-activating skill for Visual Content. Triggers on: mermaid er diagram creator, mermaid er diagram creator Part of the Visual Content skill category.

1.01x

Quality

Does it follow best practices?

Impact

98%

1.01x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./planned-skills/generated/18-visual-content/mermaid-er-diagram-creator/SKILL.md

Evaluation results

100%

E-Commerce Database Data Model

Mermaid erDiagram syntax and entity attributes

Criteria

Without context

With context

erDiagram keyword used

100%

Entity attribute types

100%

Relationship cardinality notation

100%

Relationship labels

100%

Core entities present

100%

One-to-many relationships

100%

Primary key attributes

100%

Mermaid code fence

100%

Step-by-step explanation

100%

Distinct attribute names

100%

Without context: $0.1458 · 39s · 12 turns · 13 in / 2,144 out tokens

With context: $0.2365 · 54s · 17 turns · 17 in / 2,755 out tokens

96%

Database Schema Visualization for Legacy HR System

Production-ready diagram from SQL schema

Criteria

Without context

With context

erDiagram keyword

100%

All 5 tables present

100%

Typed attributes

100%

Foreign key relationships

100%

Mermaid cardinality notation

100%

Self-referencing relationship

100%

Step-by-step analysis

30%

60%

Validation note

100%

Relationship labels

100%

Mermaid code fence

100%

Without context: $0.2390 · 1m 6s · 14 turns · 14 in / 3,874 out tokens

With context: $0.3787 · 1m 27s · 21 turns · 21 in / 4,962 out tokens

98%

Multi-Tenant SaaS Platform Data Model Design

Industry best practices and relationship modeling

Criteria

Without context

With context

erDiagram keyword

100%

Many-to-many junction table

100%

Core entities present

100%

Typed attributes

100%

Mermaid cardinality notation

100%

Relationship labels

100%

Mermaid code fence

100%

Design decisions section

75%

Tenant isolation modeled

100%

Foreign key attributes

100%

Without context: $0.2087 · 1m 14s · 12 turns · 13 in / 4,066 out tokens

With context: $0.4384 · 1m 49s · 22 turns · 54 in / 6,802 out tokens

Repository: jeremylongshore/claude-code-plugins-plus-skills
Commit: 0c08951

Evaluated: 18 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

E-Commerce Database Data Model Database Schema Visualization for Legacy HR System Multi-Tenant SaaS Platform Data Model Design

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