M
Mermaid MCP App
MCP App that renders Mermaid diagrams as interactive UI in Claude, VS Code and other MCP clients
2 GitHub
No known CVEs
No license
Maintained
Last commit 154d ago
Works with most clients
Transport: stdio, sse, http
0 tools
Grade F
MCPpedia last refreshed this data
Mermaid MCP App is an MCP server that MCP App that renders Mermaid diagrams as interactive UI in Claude, VS Code and other MCP clients. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 31/100 on MCPpedia's security, maintenance and efficiency rubric.
Step 1
Install in your client
Config is the same across clients — only the file and path differ.
CD
Supported in Claude Desktopstdio, sse, http · Node 18+
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"mermaid": {
"args": [
"-y",
"mermaid-mcp-app",
"--stdio"
],
"command": "npx"
}
}
}Are you the author?
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What Mermaid Mcp App does
An MCP App that renders Mermaid diagrams in an interactive viewer with pan, zoom, and a built-in source editor. Edit diagrams directly in the split-view editor and send the updated source back to the LLM to continue the conversation with your changes. Works in Claude Desktop, VS Code, and any MCP-App-compatible host.
Test This Server
No automated test available for this server. Check the GitHub README for setup instructions.
Scored, not listed
Why this score
Five weighted categories — click any category to see the underlying evidence.
Score breakdown
31/100across 5 weighted dimensions
0255075100
14
10
−69
Security
Maintenance
Efficiency
Documentation
Compatibility
Categoriesclick a row to see evidence
Security
OSV.devNo known CVEs.
No package registry to scan.
Community
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Frequently Asked Questions
- Is Mermaid Mcp App safe to use?
- Mermaid Mcp App has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
- How do I install Mermaid Mcp App?
- Mermaid Mcp App supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
- What AI clients work with Mermaid Mcp App?
- Mermaid Mcp App is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
- Is Mermaid Mcp App actively maintained?
- Mermaid Mcp App is less actively maintained — last commit was 154 days ago. It has 2 GitHub stars.
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Community
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