ChartForge — Prompt to Chart Generator

Created By

crawde4 days ago

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.

# charts

# data-visualization

Overview Content Tools Comments

Overview

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"

Server Config

{
  "mcpServers": {
    "chartforge": {
      "command": "npx",
      "args": [
        "-y",
        "chartforge-mcp"
      ],
      "env": {
        "CHARTFORGE_API_KEY": "<YOUR_API_KEY>"
      }
    }
  }
}

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