Which Mermaid diagram types are supported?

The skill supports a wide range of diagrams including C4 model diagrams, sequence diagrams, flowcharts (graphs), and Entity Relationship (ER) diagrams.

Can this skill fix syntax errors automatically?

Yes, it can automatically correct common issues like improper indentation, unclosed quotes, and incorrect arrow notation in sequence diagrams.

Does it validate C4 model requirements?

Yes, it specifically checks for C4 model syntax, ensuring that elements like Rel() have the required four arguments and that titles are correctly formatted.

Will it work with my existing documentation structure?

Yes, it is designed to scan any Markdown file, specifically targeting files in your docs folder or any .md file containing Mermaid code blocks.

Mermaid Syntax Validator

Name: Mermaid Syntax Validator
Author: sk8metalme

bysk8metalme

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Content Management

Validates and automatically repairs Mermaid diagram syntax within Markdown files to ensure error-free documentation rendering.

About

The Mermaid Syntax Validator is a specialized tool designed to prevent broken diagrams in documentation. It scans Markdown files for common Mermaid errors such as unclosed brackets, incorrect C4 model parameters, and invalid sequence diagram arrows. Beyond simple detection, the skill automatically normalizes indentation and fixes syntax issues, making it indispensable for teams maintaining complex architecture diagrams, sequence flows, and ER diagrams directly in their code repositories. It ensures that your technical documentation remains visually consistent and syntactically correct for tools like GitHub, GitLab, and Mermaid Live Editor.

Key Features

1 GitHub stars
Real-time syntax validation for C4, Sequence, Graph, and ER diagrams
Verification of required arguments for C4 model elements
Normalization of arrow notations and relationship symbols
Seamless scanning of all project Markdown files
Automatic correction of common indentation and bracket errors

Use Cases

Automating the cleanup of hand-written Mermaid drafts into production-ready code
Pre-commit validation of technical documentation to prevent broken CI/CD builds
Standardizing architecture diagrams in architecture.md files

About

Key Features

1 GitHub stars
Real-time syntax validation for C4, Sequence, Graph, and ER diagrams
Verification of required arguments for C4 model elements
Normalization of arrow notations and relationship symbols
Seamless scanning of all project Markdown files
Automatic correction of common indentation and bracket errors

Use Cases

Automating the cleanup of hand-written Mermaid drafts into production-ready code
Pre-commit validation of technical documentation to prevent broken CI/CD builds
Standardizing architecture diagrams in architecture.md files