MCP server for data visualization with Mermaid charts.
If you already use MCP, the mcp mcp server is the piece that lets your assistant work with it directly. MCP server for data visualization with Mermaid charts.
A Model Context Protocol (MCP) server for data visualization. It exposes tools to render charts (line, bar, pie, scatter, heatmap, etc.) from data and returns the plot as image/base64 text/mermaid diagram.
The toolset is worth reading before you wire it up, because it tells you what the integration is really for:
render_chart — The render_chart tool exposed by this serverconfigure_preferences — Interactive configuration tool for setting user preferencesInstallation goes through your MCP client rather than a global install: point it at @smithery/cli on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.
Configuration is passed through the environment: LOG_LEVEL, CHART_DEFAULT_WIDTH, CHART_DEFAULT_HEIGHT. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
requirements.txtAmong the cloud and infrastructure options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. MCP's toolset — render_chart, configure_preferences — is a fair guide to whether it matches your workflow. It is maintained by MR901; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| render_chart | The render_chart tool exposed by this server. |
| configure_preferences | Interactive configuration tool for setting user preferences. |
{
"mcpServers": {
"plots": {
"command": "npx",
"args": ["-y", "@smithery/cli"],
"env": {
"LOG_LEVEL": "your-value",
"CHART_DEFAULT_WIDTH": "your-value",
"CHART_DEFAULT_HEIGHT": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
requirements.txt| Variable | Description | Required |
|---|---|---|
| LOG_LEVEL | Configuration value read at startup. | Optional |
| CHART_DEFAULT_WIDTH | Configuration value read at startup. | Optional |
| CHART_DEFAULT_HEIGHT | Configuration value read at startup. | Optional |
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