mermaid-validate

Validate Mermaid diagram syntax in Markdown files and directories.

Updated Mar 15, 2026

Search Tags:#documentation #markdown #mermaid #validation #diagrams #lint

Ready to run

npx skills add https://github.com/JNZader/javi-ai --skill mermaid-validate-jnzader

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: mermaid-validate
Source: https://github.com/JNZader/javi-ai/tree/main/own/plugins/mermaid/skills/mermaid-validate
Command: npx skills add https://github.com/JNZader/javi-ai --skill mermaid-validate-jnzader

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Automates the detection of syntax errors in Mermaid diagrams embedded in Markdown files, preventing broken diagrams in documentation and tutorials.

Core Features & Use Cases

Scan single files or entire directories for Mermaid blocks.
Validate Mermaid syntax and report per-file results.
Provide actionable guidance for fixing diagram errors in CI or local workflows.

Quick Start

Run the mermaid-validate skill against a Markdown project to verify all Mermaid diagrams.

Frequently Asked Questions about mermaid-validate

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I validate Mermaid diagrams in Markdown files to catch syntax errors?▼

To validate Mermaid diagrams in Markdown files, you can scan individual files or entire directories to extract Mermaid blocks and check their syntax with a parser. This process reports per-file results to help you catch and fix syntax errors before publishing documentation.

What is the best way to check Mermaid syntax across a documentation directory?▼

The best way to check Mermaid syntax across a directory is to run an automated validation process that extracts all embedded Mermaid blocks from your Markdown files and reports any syntax errors found per file, preventing broken diagrams in your tutorials.

Can I use Mermaid validation in a CI workflow to prevent broken diagrams?▼

Yes, you can use Mermaid validation in a CI workflow to automatically detect syntax errors in embedded diagrams. It processes Markdown files, validates the extracted blocks, and provides actionable guidance for fixing diagram errors during continuous integration.

Do I need any external dependencies to lint Mermaid blocks in Markdown?▼

No external dependencies are required to lint Mermaid blocks in Markdown. The validation process works directly on your Markdown files by extracting the Mermaid blocks and validating their syntax using an integrated parser.

Why does my Mermaid diagram render incorrectly in Markdown documentation?▼

Your Mermaid diagram may render incorrectly due to syntax errors within the Markdown code block. Validating the Mermaid syntax will identify these specific errors and provide actionable guidance to fix the broken diagram.