Mermaid Validator FAQs

Question 1

What types of Mermaid diagrams can it validate?

Accepted Answer

It supports over 28 Mermaid diagram types, including Flowchart, Sequence, Class, State, ER, Gantt, and more. Validation is performed using real grammar parsing (Jison, ANTLR, Langium) for accuracy.

Question 2

How can I integrate Mermaid Validator into my projects?

Accepted Answer

The tool offers dual architecture: a traditional REST API for web applications and direct integrations, and an MCP server optimized for LLM integrations (like Claude Code and Claude Desktop). It supports multiple MCP transport options: Stdio, HTTP streamable, and Server-Sent Events (SSE).

Question 3

What security features are included?

Accepted Answer

Mermaid Validator includes comprehensive security features such as authentication (API key/Bearer token), configurable rate limiting, and robust input validation to protect your applications and data.

Question 4

Does it support validating diagrams from files?

Accepted Answer

Yes, it supports multi-format input, allowing you to validate Mermaid diagrams from direct JSON input, Markdown files, and even ZIP archives containing multiple Markdown files. It automatically extracts and validates diagrams from these sources.

Question 5

What is Mermaid Validator?

Accepted Answer

Mermaid Validator is a high-performance API and Model Context Protocol (MCP) server designed for robust validation of Mermaid diagrams. It ensures diagrams are syntactically correct and secure, offering enterprise-grade capabilities for various integrations.

Mermaid Validator

Mermaid Validator

Key Features

Use Cases

Key Features

Use Cases