VChart
OfficialCreates interactive charts and visualizations from data using the VChart library. Supports 15+ chart types with output as specifications, images, or HTML.
Generates interactive charts and visualizations using the VChart library, supporting over 15 chart types from basic line and bar charts to specialized heatmaps and hierarchical visualizations with flexible output formats including specifications, rendered images, or HTML embeddings.
What it does
- Generate line, bar, and area charts
- Create polar charts like pie, radar, and rose charts
- Build hierarchical visualizations like treemaps and sunburst charts
- Generate scatter plots and heatmaps
- Create Sankey diagrams for flow visualization
- Export charts as images or HTML
Best for
About VChart
VChart is an official MCP server published by visactor that provides AI assistants with tools and capabilities via the Model Context Protocol. Create interactive visualizations and charts with VChart, a powerful data analysis tool and pie chart maker for flexible It is categorized under analytics data. This server exposes 10 tools that AI clients can invoke during conversations and coding sessions.
How to install
You can install VChart in your AI client of choice. Use the install panel on this page to get one-click setup for Cursor, Claude Desktop, VS Code, and other MCP-compatible clients. This server runs locally on your machine via the stdio transport.
License
VChart is released under the MIT license. This is a permissive open-source license, meaning you can freely use, modify, and distribute the software.
Tools (10)
Generates Cartesian charts: line (trends over time), area (cumulative totals), bar (category comparison), waterfall (incremental changes), ranking bar (ordered categories), and funnel (visualizes stages in a process or conversion rates).
Generate a polar chart (rose, radar, pie) to display numerical differences among different categories using radius and angle in polar coordinates.
Generate a chart for hierarchical visualization of multi-level categorical data proportions, include sunburst, treemap, circle_packing.
Generates a progress chart for visualizing quantitative values normalized between 0 and 1. Ideal for representing progress, completion rates, or proportional metrics. The gauge chart and liquid chart currently only supports displaying data for a single dimension.
Generate a word cloud to visualize word frequency or importance, or a Venn diagram to show relationships such as intersections and unions between sets.
vchart-mcp-server
A Model Context Protocol (MCP) server for the @visactor/vchart that enables AI assistants to generate interactive charts and visualizations.
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Table of Contents
- Table of Contents
- Features
- Usage
- Running with SSE or Streamable Transport
- Example Usage in AI Conversations
- Development
- Environment Variables
- Private Deployment
- License
- Contributing
- Related Projects
Features
Chart Output Formats
Each chart can be generated in multiple formats:
- Image - PNG/JPG image format for embedding (default)
- Spec - VChart spec object for programmatic use
- HTML - Interactive HTML chart for web display
Common Parameters Supported by All Charts
| Parameter | Description | Type/Options | Default |
|---|---|---|---|
output | Output format | "spec" | "image" | "html" | "image" |
width | Chart width | Number | 500 |
height | Chart height | Number | 500 |
title | Chart title | String | Optional |
subTitle | Chart subtitle | String | Optional |
titleOrient | Title position | String | Optional |
chartTheme | Chart theme | String | Optional |
background | Background color | String | Optional |
colors | Color palette | Array/String | Optional |
Supported Chart Types and Tools
generate_cartesian_chart
Generates Cartesian coordinate system charts, including area, bar, line, waterfall, funnel, and animated ranking bar charts.
| Parameter | Description | Type | Required |
|---|---|---|---|
dataTable | Data object array | Array | Yes |
chartType | Chart type | "line" | "area" | "bar" | "waterfall" | "funnel" | "ranking_bar" | Yes |
xField | X axis field name | string | Yes |
yField | Y axis field name | string | Yes |
colorField | Color mapping field | string | Optional |
timeField | Time field for animated ranking bar chart | string | Optional |
stackOrPercent | Stack or percent mode | "stack" | "percent" | Optional |
transpose | Display bar chart horizontally (as bar chart) | boolean | Optional |
xAxisType | X axis type | "band" | "linear" | Optional |
xAxisOrient | X axis position | "top" | "bottom" | Optional |
xAxisTitle | X axis title | string | Optional |
xAxisHasGrid | Show X axis grid lines | boolean | Optional |
xAxisHasLabel | Show X axis labels | boolean | Optional |
xAxisHasTick | Show X axis ticks | boolean | Optional |
yAxisType | Y axis type | "band" | "linear" | Optional |
yAxisOrient | Y axis position | "left" | "right" | Optional |
yAxisTitle | Y axis title | string | Optional |
yAxisHasGrid | Show Y axis grid lines | boolean | Optional |
yAxisHasLabel | Show Y axis labels | boolean | Optional |
yAxisHasTick | Show Y axis ticks | boolean | Optional |
generate_polar_chart
Generates polar coordinate system charts, including radar, rose, and pie charts.
| Parameter | Description | Type/Options | Required |
|---|---|---|---|
dataTable | Data object array | Array | Yes |
chartType | Chart type | "radar" | "rose" | "pie" | Yes |
categoryField | Category field name | string | Yes |
valueField | Value field name | string | Yes |
colorField | Color mapping field | string | Optional |
angleAxisTitle | Angle axis title | string | Optional |
angleAxisHasGrid | Show angle axis grid lines | boolean | Optional |
angleAxisHasLabel | Show angle axis labels | boolean | Optional |
angleAxisHasTick | Show angle axis ticks | boolean | Optional |
angleAxisType | Angle axis type | "band" | "linear" | Optional |
README truncated. View full README on GitHub.
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