ChartForge — Prompt to Chart Generator
About
Turn a plain-English prompt into a publication-ready chart image. ChartForge's MCP server lets Claude generate, refine, and export bar, line, pie, scatter, and more chart types as PNG — powered by AI. Includes 7 free generations, no setup beyond an API key.
Details
- Author
- crawde
- Downloads
- 349
- Categories
- Developer Tools, AI
Jump to
- Generate charts from natural language descriptions
- Supports multiple style presets: midnight, frost, ember, minimal, corporate, neon, light
- Refine previously generated charts using refine_chart
- Configurable output dimensions (default 1200x800 pixels)
- List available style presets with list_styles
- Requires an API key from chartforgeai.com
Setting up with Highlight
This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:
- Download and install Highlight from highlightai.com/download
- Navigate to the plugins tab and select "Add Custom Plugin"
-
Configure the plugin with the settings below
Plugin Name
ChartForge — Prompt to Chart GeneratorCommand (node, npx, python, etc.)Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
- Enable "Start Automatically" if you want the plugin to start when Highlight launches
From the repository
Install by adding the server configuration to your claude_desktop_config.json with the command npx chartforge-mcp and a required CHARTFORGE_API_KEY environment variable. Once configured, use the generate_chart tool with a natural language prompt, optionally specifying a style preset, width, and height. Additional tools allow refining a previously generated chart by its ID and listing available style presets.
generate_chart
Generate a stunning, publication-quality chart or diagram from a natural language description. Returns a PNG image.
refine_chart
Modify an existing chart. Provide the chart ID from a previous generation and describe what to change.
list_styles
List available chart style presets with descriptions.
Claude Desktop / Cursor
Paste into your MCP client config file to install this server.
{
"mcpServers": {
"chartforge \u2014 prompt to chart generator": {
"chartforge": {
"command": "npx",
"args": [
"-y",
"chartforge-mcp"
],
"env": {
"CHARTFORGE_API_KEY": "<YOUR_API_KEY>"
}
}
}
}
}McpServers
{
"chartforge": {
"command": "npx",
"args": [
"-y",
"chartforge-mcp"
],
"env": {
"CHARTFORGE_API_KEY": "<YOUR_API_KEY>"
}
}
}ChartForge MCP Server
Generate stunning, publication-quality charts and diagrams from natural language — directly inside Claude.
Setup
Claude Desktop
Add this to your claude_desktop_config.json:
{
"mcpServers": {
"chartforge": {
"command": "npx",
"args": ["chartforge-mcp"],
"env": {
"CHARTFORGE_API_KEY": "your_api_key_here"
}
}
}
}
Environment Variables
| Variable | Required | Description |
|----------|----------|-------------|
| CHARTFORGE_API_KEY | Yes | Your API key from chartforgeai.com |
| CHARTFORGE_API_URL | No | Custom API URL (default: https://chartforgeai.com) |
Tools
generate_chart
Generate a chart from a natural language description.
Parameters:
- prompt (required): Description of the chart
- style (optional): Style preset — midnight, frost, ember, minimal, corporate, neon, light
- width (optional): Width in pixels (default: 1200)
- height (optional): Height in pixels (default: 800)
refine_chart
Modify a previously generated chart.
Parameters:
- chartId (required): Chart ID from a previous generation
- modification (required): What to change
list_styles
List available style presets with descriptions.
Examples
> "Create a bar chart showing quarterly revenue from $2M to $18M over 3 years"
> "System architecture diagram for a microservices backend"
> "Sankey diagram of marketing budget flow through channels to conversions"
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