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Render themed charts as hosted URLs. Embed in markdown, emails, and Slack. Hosted MCP, zero setup.
About
Render themed charts as hosted URLs. Embed in markdown, emails, and Slack. Hosted MCP, zero setup.
Security Report
ChartOne MCP is a chart rendering client that forwards chart data to the ChartOne hosted API (api.chartone.dev) and returns images and persistent URLs, which matches its stated purpose. Authentication is optional via a Bearer API key from env config, and the key is not hardcoded or logged. Main considerations are that user chart data is sent to a third-party hosted service and persisted there with URLs, and the server has minimal code quality issues such as the error-swallowing empty catch around JSON parsing and a test-only placeholder API key in documentation. Supply chain analysis found 1 known vulnerability in dependencies (0 critical, 1 high severity). Package verification found 1 issue.
7 files analyzed · 7 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: CHARTONE_API_KEY
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-zhugejun-chartone": {
"env": {
"CHARTONE_API_KEY": "your-chartone-api-key-here"
},
"args": [
"-y",
"@chartone/mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub 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):
{
"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:
POST https://api.chartone.dev/mcp
Authorization: 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.
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