MCP server

Mermaidchart Mermaid Official

com.mermaidchart/mermaid-mcp

Checked 28 Oct 2026, 09:03 UTC · It answered and asked for a sign-in

MCP server for Mermaid diagram validation and rendering

Source

At a glance

Type

MCP server

Publisher

mermaidchart.com (verified by the MCP Registry)

Status

Signs in with your account

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

28 Oct 2026, 09:03 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http mermaid-mcp https://mcp.mermaidchart.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.mermaid-mcp]
url = "https://mcp.mermaidchart.com/mcp"

Gemini CLI

{"mcpServers":{"mermaid-mcp":{"httpUrl":"https://mcp.mermaidchart.com/mcp"}}}

Cursor

{"mcpServers":{"mermaid-mcp":{"url":"https://mcp.mermaidchart.com/mcp"}}}

VS Code

{"servers":{"mermaid-mcp":{"type":"http","url":"https://mcp.mermaidchart.com/mcp"}}}

Antigravity

agy mcp add mermaid-mcp https://mcp.mermaidchart.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"mermaid-mcp","server_url":"https://mcp.mermaidchart.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"mermaid-mcp","server_url":"https://mcp.mermaidchart.com/mcp"}

Signs in with your account: your agent app opens a sign-in page the first time you use it.

Related MCP servers

• DocMorph Studio
  Render Mermaid diagrams, Markdown to PDF and outlines, image OCR, and media metadata cleanup.
• Agentic Mermaid
  Render, verify, describe, and safely edit Mermaid diagrams through MCP.
• Line9
  Render Mermaid with Line9 layout in your assistant.
• Tanod Images
  Image toolkit: resize, convert, compress, crop, metadata, hashes, favicons, OCR, QR codes, barcodes.
• Zindex
  Immutable agent diagrams: create, edit, validate and render versioned diagrams over MCP.
• TechFabric
  Write TechFabric posts from your agent. Walk through posts, compare studies, check readiness.
• cnvs.app
  Real-time collaborative whiteboard — AI agents and humans edit the same board live over MCP.
• jotview
  Turn markdown and Mermaid diagrams into rendered jotbins.com links, and read them back.

Badge for your README

[![AptLynx](https://aptlynx.net/badge/com.mermaidchart/mermaid-mcp.svg)](https://aptlynx.net/servers/com.mermaidchart/mermaid-mcp)

Listing text is written by the maker; AptLynx lists tools and does not vouch for them. Find another tool · Browse by topic · For agents