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com.mermaidchart/mermaid-mcp

Official registry Other

MCP server for Mermaid diagram validation and rendering

Source code

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http mermaid-mcp 'https://mcp.mermaidchart.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mermaid-mcp": {
            "type": "http",
            "url": "https://mcp.mermaidchart.com/mcp"
        }
    }
}
Remote (sse)
Claude Code 
claude mcp add --transport sse mermaid-mcp 'https://mcp.mermaidchart.com/sse'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mermaid-mcp": {
            "type": "sse",
            "url": "https://mcp.mermaidchart.com/sse"
        }
    }
}

Frequently asked questions

What is com.mermaidchart/mermaid-mcp?

MCP server for Mermaid diagram validation and rendering

How do I install com.mermaidchart/mermaid-mcp?

It runs as a remote server. In Claude Code: claude mcp add --transport http mermaid-mcp 'https://mcp.mermaidchart.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does com.mermaidchart/mermaid-mcp need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is com.mermaidchart/mermaid-mcp open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains com.mermaidchart/mermaid-mcp?

It is published by Mermaid-Chart. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.