AI Plugin Index
Claude Mermaid
Verified · npm:claude-mermaidMCP server by veelenga · updated · ★ 218 · 451 downloads a week
MCP server for previewing Mermaid diagrams in Claude Code Claude Mermaid is published by npm:claude-mermaid from its verified domain in the official MCP Registry.
Last commit 2 days ago
MIT: permissive, fine for commercial use
Published package or server URL, 218 stars, original repository
Not checked yet. What we check
Install Claude Mermaid
Built from the published package, never by AIclaude mcp add claude-mermaid -- npx -y claude-mermaidRun in your terminal. Add --scope user to use it in every project.
{
"mcpServers": {
"claude-mermaid": {
"command": "npx",
"args": [
"-y",
"claude-mermaid"
]
}
}
}Settings, Developer, Edit config. Paste into claude_desktop_config.json and restart.
{
"mcpServers": {
"claude-mermaid": {
"command": "npx",
"args": [
"-y",
"claude-mermaid"
]
}
}
}Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).
{
"servers": {
"claude-mermaid": {
"command": "npx",
"args": [
"-y",
"claude-mermaid"
]
}
}
}Add to .vscode/mcp.json. VS Code uses "servers", not "mcpServers".
codex mcp add claude-mermaid -- npx -y claude-mermaid{
"mcpServers": {
"claude-mermaid": {
"command": "npx",
"args": [
"-y",
"claude-mermaid"
]
}
}
}Add to ~/.gemini/config/mcp_config.json (all projects) or .agents/mcp_config.json (this project).
gemini mcp add claude-mermaid npx -y claude-mermaidGemini 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 claude-mermaid block.
Alternatives to Claude Mermaid
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Claude Mermaid: common questions
How do I install Claude Mermaid?
In Claude Code run claude mcp add claude-mermaid -- npx -y claude-mermaid. For Claude Desktop, Cursor and VS Code, paste the config shown above and restart. See the install guides.
Is Claude Mermaid the official server?
Claude Mermaid is published by npm:claude-mermaid from its verified domain in the official MCP Registry.
Is Claude Mermaid free?
The code is published under the MIT licence. The service it connects to may have its own pricing.
Is Claude Mermaid safe to use?
It scores 78 of 100. Grades: maintenance A, 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 Claude Mermaid?
Similar MCP servers: GitDiagram, draw.io, Agent-Native Plan, Figma-Context-MCP.
Does Claude Mermaid 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.