AI Plugin Index
MCP Mermaid Validator
Verified · npm:@rtuinMCP server by rtuin · updated · ★ 57 · 61 downloads a week
An MCP server that validates mermaid diagrams MCP Mermaid Validator is published by npm:@rtuin from its verified domain in the official MCP Registry.
Last commit 235 days ago
MIT: permissive, fine for commercial use
Published package or server URL, 57 stars, original repository
Not checked yet. What we check
Install MCP Mermaid Validator
Built from the published package, never by AIclaude mcp add mcp-mermaid-validator -- npx -y @rtuin/mcp-mermaid-validatorRun in your terminal. Add --scope user to use it in every project.
{
"mcpServers": {
"mcp-mermaid-validator": {
"command": "npx",
"args": [
"-y",
"@rtuin/mcp-mermaid-validator"
]
}
}
}Settings, Developer, Edit config. Paste into claude_desktop_config.json and restart.
Step-by-step: install MCP Mermaid Validator in Claude Desktop
{
"mcpServers": {
"mcp-mermaid-validator": {
"command": "npx",
"args": [
"-y",
"@rtuin/mcp-mermaid-validator"
]
}
}
}Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).
{
"servers": {
"mcp-mermaid-validator": {
"command": "npx",
"args": [
"-y",
"@rtuin/mcp-mermaid-validator"
]
}
}
}Add to .vscode/mcp.json. VS Code uses "servers", not "mcpServers".
codex mcp add mcp-mermaid-validator -- npx -y @rtuin/mcp-mermaid-validator{
"mcpServers": {
"mcp-mermaid-validator": {
"command": "npx",
"args": [
"-y",
"@rtuin/mcp-mermaid-validator"
]
}
}
}Add to ~/.gemini/config/mcp_config.json (all projects) or .agents/mcp_config.json (this project).
Step-by-step: install MCP Mermaid Validator in Antigravity CLI
gemini mcp add mcp-mermaid-validator npx -y @rtuin/mcp-mermaid-validatorGemini CLI was replaced by Antigravity CLI in June 2026 and remains only for enterprise licences and paid API keys.
MCP servers run with your permissions and can read what you give them access to. Some need an API key: check the README and add it under env in the mcp-mermaid-validator block.
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MCP Mermaid Validator: common questions
How do I install MCP Mermaid Validator?
In Claude Code run claude mcp add mcp-mermaid-validator -- npx -y @rtuin/mcp-mermaid-validator. For Claude Desktop, Cursor and VS Code, paste the config shown above and restart. See the install guides.
Is MCP Mermaid Validator the official server?
MCP Mermaid Validator is published by npm:@rtuin from its verified domain in the official MCP Registry.
Is MCP Mermaid Validator free?
The code is published under the MIT licence. The service it connects to may have its own pricing.
Is MCP Mermaid Validator safe to use?
It scores 56 of 100. Grades: maintenance D, licence A, quality C. The security check has not run for it yet. Review the code before you install. How grades work.
What are alternatives to MCP Mermaid Validator?
Similar MCP servers: GitDiagram, draw.io, Pascal App CLI, Figma-Context-MCP.
Does MCP Mermaid Validator work with ChatGPT?
Not directly. It runs locally, and ChatGPT only connects to remote servers with a URL. Use it in Claude Code, Claude Desktop, Cursor, VS Code or Codex.