How to install mermaid-mcp in Claude Code
To install mermaid-mcp in Claude Code, run "claude mcp add --transport http mermaid-mcp https://mcp.mermaidchart.com/mcp" in your terminal, then check it with "claude mcp list". It takes about a minute.
Built from the published package · server updated 13 months ago
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Run the install command
Open a terminal in your project and run:
claude mcp add --transport http mermaid-mcp https://mcp.mermaidchart.com/mcp - 2
Choose where it applies (optional)
Add --scope user to use it in every project, or --scope project to share it with your team through a .mcp.json file.
claude mcp add --scope user --transport http mermaid-mcp https://mcp.mermaidchart.com/mcp - 3
Check that it is connected
List your servers, or type /mcp inside a Claude Code session to see its status and tools.
claude mcp list
MCP servers run with your permissions. If mermaid-mcp needs an API key, add it under env in the config. Check its README.
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Questions
Does mermaid-mcp work in Claude Code?
Yes. Claude Code supports mcp servers (local and remote), skills and plugins, and mermaid-mcp installs with the steps above.
mermaid-mcp does not show up in Claude Code. What now?
Restart Claude Code fully, check the JSON is valid, and make sure Node.js (for npx) is installed. See common MCP errors and fixes.
Is mermaid-mcp safe?
It scores 13 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.
