ChartForge — Prompt to Chart Generator

Q: How do I get an API key?

Sign up at [chartforgeai.com](https://chartforgeai.com) to obtain your CHARTFORGE_API_KEY.

@crawde

About ChartForge — Prompt to Chart Generator

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 #ai #png #analytics

Config

Add this server to your MCP-compatible client using the configuration below.

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

Tools

No tools detected

Fetch the live tool list by running this server in a temporary sandbox using the button above.

Overview

What is ChartForge — Prompt to Chart Generator?

ChartForge — Prompt to Chart Generator is an MCP server that lets Claude generate stunning, publication-quality charts and diagrams from natural language descriptions. It integrates with the ChartForge API to turn plain text prompts into visual outputs, and is intended for users who want to create charts directly inside Claude without manual tooling.

How to use ChartForge — Prompt to Chart Generator?

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.

Key features of ChartForge — Prompt to Chart Generator

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

Use cases of ChartForge — Prompt to Chart Generator

Create a bar chart showing quarterly revenue trends from natural language data
Generate a system architecture diagram for a microservices backend
Produce a Sankey diagram of marketing budget flow through channels to conversions

FAQ from ChartForge — Prompt to Chart Generator

How do I get an API key?

Where is the API URL configurable?

An optional CHARTFORGE_API_URL environment variable lets you set a custom API URL; the default is https://chartforgeai.com.

What style presets are available?

The available presets are: midnight, frost, ember, minimal, corporate, neon, and light.

Can I modify a chart after it's generated?

Yes, use the refine_chart tool with the chart's ID and a description of the modification you want to make.

Frequently asked questions

How do I get an API key?

Where is the API URL configurable?

An optional CHARTFORGE_API_URL environment variable lets you set a custom API URL; the default is `https://chartforgeai.com`.

What style presets are available?

The available presets are: midnight, frost, ember, minimal, corporate, neon, and light.

Can I modify a chart after it's generated?

Yes, use the `refine_chart` tool with the chart's ID and a description of the modification you want to make.

Comments

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