Chartone

io.github.zhugejunPublished by GitHub account zhugejunv0.1.7Updated Oct 24, 2026

Render themed charts as hosted URLs. Embed in markdown, emails, and Slack. Hosted MCP, zero setup.

VerifiedSTDIODesktop onlyData & Analytics Media & Design

Server details

Identifier: io.github.zhugejun/chartone
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Sep 16, 2026

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Overview

AI-generated overview

ChartOne lets an AI assistant render themed charts and return them as inline images plus hosted URLs for emails, Slack, PDFs and dashboards.

What you can do: Render a chart from an explicit type, data and theme, returning an inline image and a persistent hosted URL. Suggest a chart type and theme from data plus an intent such as showing quarterly trends, then render it. Use the resulting image or URL in markdown, emails, Slack messages, PDFs and dashboards.
When to use it: Useful when an assistant needs to turn data into a shareable chart without local plotting setup, especially for chat messages, emails or documents that need a hosted image link.
Requirements: Runs as a local stdio process via the npm package @chartone/mcp, typically launched with npx, so Node.js is needed. An optional CHARTONE_API_KEY environment variable enables higher quota and no watermark; without it, anonymous mode works but charts are watermarked with a 7-day URL. A hosted HTTP endpoint is also offered in beta.

Before you install

The optional CHARTONE_API_KEY is a secret placed in the client config; keep it out of shared files. Anonymous charts are watermarked and their URLs expire after 7 days. Chart data is sent to the ChartOne hosted service, so avoid confidential data. Paid tiers are needed to remove the watermark and extend URL lifetime.

Installation

In SourceWeft

Open Chartone in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

@chartone/mcp

Branded chart rendering for AI agents. Hosted MCP, zero setup.

ChartOne MCP gives any AI agent the ability to produce themed charts and return them as both an inline image and a persistent hosted URL — perfect for emails, Slack messages, PDFs, and dashboards.

Install

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

json

{  "mcpServers": {    "chartone": {      "command": "npx",      "args": ["-y", "@chartone/mcp"],      "env": {        "CHARTONE_API_KEY": "sk-..."      }    }  }}

{  "mcpServers": {    "chartone": {      "command": "npx",      "args": ["-y", "@chartone/mcp"],      "env": {        "CHARTONE_API_KEY": "sk-..."      }    }  }}

Restart Claude Desktop. Anonymous mode (no key) returns watermarked charts.

Cursor / Zed / Windsurf

Same config shape, in each client's MCP settings file. See docs.chartone.dev/mcp for current paths.

Hosted endpoint (beta)

For cloud agents that can't run local stdio servers:

text

POST https://api.chartone.dev/mcpAuthorization: Bearer sk-...   (optional, anonymous returns watermark)Content-Type: application/json
Body: { "method": "tools/list" }  or  { "method": "tools/call", "params": {...} }

POST https://api.chartone.dev/mcpAuthorization: Bearer sk-...   (optional, anonymous returns watermark)Content-Type: application/json
Body: { "method": "tools/list" }  or  { "method": "tools/call", "params": {...} }

Tools

render_chart — render a chart from explicit type, data, theme.
suggest_chart — give it data + intent ("show quarterly trends"), it picks the chart type/theme and renders.

Both return an inline image plus a persistent hosted URL.

Get an API key

Sign up at chartone.dev. Free tier includes a generous render quota; paid tiers remove the watermark and extend URL lifetime.

Source: README.md at commit 77d6bed

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v0.1.7LatestOct 8, 2026
v0.1.6Sep 16, 2026

Score

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