mermaid-syntax

Generate and validate Mermaid diagrams against v11 syntax rules.

19|2|Updated Dec 25, 2025
One-click install
npx skills add https://github.com/awesome-skills/mermaid-syntax-skill --skill mermaid-syntax-awesome-skills
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: mermaid-syntax
Source: https://github.com/awesome-skills/mermaid-syntax-skill/tree/main
Command: npx skills add https://github.com/awesome-skills/mermaid-syntax-skill --skill mermaid-syntax-awesome-skills

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill prevents common syntax errors in Mermaid diagrams, ensuring your diagrams render correctly and saving you time debugging.

Core Features & Use Cases

  • Syntax Validation: Catches 90% of common Mermaid syntax errors, including special character issues, reserved words, and escaping rules.
  • Mermaid v11 Support: Ensures compatibility with the latest features like hand-drawn looks and bidirectional arrows.
  • Use Case: You're trying to create a flowchart but it's not rendering. You can ask this skill to review your Mermaid code and fix any syntax errors.

Quick Start

Use the mermaid-syntax skill to fix the following mermaid diagram code:

Frequently Asked Questions about mermaid-syntax

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

FAQPage Schema
Why does my Mermaid flowchart not render correctly?

Mermaid flowcharts often fail to render due to syntax errors involving special characters, reserved words, or incorrect escaping rules. You can validate your code to catch these common issues and ensure correct rendering.

How do I fix syntax errors in Mermaid sequence diagrams?

To fix syntax errors in Mermaid sequence diagrams, review your code for special character conflicts and reserved word violations. Using a validation tool prevents these common mistakes and ensures error-free diagram generation.

Does Mermaid v11 support bidirectional arrows and hand-drawn looks?

Yes, Mermaid v11 supports new features including bidirectional arrows and hand-drawn looks. Ensuring your syntax is compatible with v11 prevents rendering failures when using these latest updates.

What is the best way to prevent escaping rule errors in Mermaid code generation?

The best way to prevent escaping rule errors in Mermaid code generation is to validate your syntax before rendering. This catches common special character issues and reserved word conflicts automatically.

Can I use special characters in Mermaid class diagrams without breaking the syntax?

Special characters in Mermaid class diagrams can break the syntax if not escaped properly. Reviewing your code against comprehensive syntax references ensures correct escaping and prevents rendering failures.

How do I validate Mermaid syntax for multiple diagram types?

You can validate Mermaid syntax for multiple diagram types including flowcharts, sequence diagrams, and class diagrams by checking against comprehensive syntax references to catch common errors before rendering.