Summary
A diagram drafted in a conversation ends up as a file the repository can reference.
One tool, and its arguments cover what actually varies between renders: format, theme, background colour, folder and name. That makes it worth leaving installed — the drafting and the rendering stop being two separate places, and the diagram in the message is the same artefact as the one in the docs.
What it is
A single-tool server that renders mermaid markdown to an image file.
What you get
- A diagram rendered from mermaid markdown as a PNG or an SVG
- Theme and background colour chosen per render, so the image suits the document it is going into
- The output folder and filename given in the call, so the file lands where the document already expects it
Requirements
The mermaid markdown itself and a folder the server can write into. Nothing is authenticated: it declares no environment variables.
Setup effort
One command — npx -y @smithery/cli install @peng-shawn/mermaid-mcp-server --client claude