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Data Visualization

Rose Chart Generator

Generate beautiful Nightingale rose charts (coxcomb charts) to visualize data through both angle and area, perfect for comparative analysis and historical data presentation

html· HTML resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL
curl -X POST 'https://api.elysiatools.com/en/api/tools/rose-chart' \
  -H 'Content-Type: application/json' \
  -d '{"chartData":"JSON format:\n[{"label": "January", "value": 65, "description": "Winter month"},\n{"label": "February", "value": 59, "description": "Winter month"},\n{"label": "March", "value": 80, "description": "Spring month"},\n{"label": "April", "value": 81, "description": "Spring month"}]","chartTitle":"Enter chart title...","colorScheme":"nightingale","customColors":"["#FF6B6B", "#4ECDC4", "#45B7D1", "#96CEB4"]","valueFormat":"number","chartSize":"500","startAngle":"0","innerRadius":"30","segmentSpacing":"2","backgroundColor":"#ffffff","showValues":true,"showLabels":true,"showGrid":true,"showAnimation":true,"showPercentage":false,"showTotal":true,"enableTooltip":true}'

© 2026 Elysia Tools. Developer documentation.

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API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP
POST https://api.elysiatools.com/en/api/tools/rose-chart

Parameters

NameTypeRequiredDescription
chartDatatextareaYesData for the rose chart in JSON format with label, value, and optional description fields
chartTitletextNoTitle that will be displayed above the chart
colorSchemeselectNo—
customColorstextareaNoJSON array of hex colors (requires Custom Colors selection)
valueFormatselectNo—
chartSizenumberNoSize of the chart in pixels (min: 300, max: 700)
startAnglenumberNoStarting angle in degrees (0-360)
innerRadiusnumberNoInner radius for the rose chart (0-100)
segmentSpacingnumberNoSpacing between rose segments (0-5)
backgroundColorcolorNoBackground color for the chart container
showValuescheckboxNoDisplay values inside the rose petals
showLabelscheckboxNoDisplay category labels around the chart
showGridcheckboxNoDisplay background grid circles
showAnimationcheckboxNoAnimate rose petals when loading
showPercentagecheckboxNoShow percentages instead of values
showTotalcheckboxNoDisplay total value below the title
enableTooltipcheckboxNoShow detailed information on hover

Response format

HTML result

JSON
{
  "result": "<div>Processed HTML content</div>",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json
{
  "mcpServers": {
    "elysiatools-rose-chart": {
      "name": "rose-chart",
      "description": "Generate beautiful Nightingale rose charts (coxcomb charts) to visualize data through both angle and area, perfect for comparative analysis and historical data presentation",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=rose-chart",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call
{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "rose-chart",
    "arguments": {
  "chartData": "JSON format:\n[{&quot;label&quot;: &quot;January&quot;, &quot;value&quot;: 65, &quot;description&quot;: &quot;Winter month&quot;},\n{&quot;label&quot;: &quot;February&quot;, &quot;value&quot;: 59, &quot;description&quot;: &quot;Winter month&quot;},\n{&quot;label&quot;: &quot;March&quot;, &quot;value&quot;: 80, &quot;description&quot;: &quot;Spring month&quot;},\n{&quot;label&quot;: &quot;April&quot;, &quot;value&quot;: 81, &quot;description&quot;: &quot;Spring month&quot;}]",
  "chartTitle": "Enter chart title...",
  "colorScheme": "nightingale",
  "customColors": "[&quot;#FF6B6B&quot;, &quot;#4ECDC4&quot;, &quot;#45B7D1&quot;, &quot;#96CEB4&quot;]",
  "valueFormat": "number",
  "chartSize": "500",
  "startAngle": "0",
  "innerRadius": "30",
  "segmentSpacing": "2",
  "backgroundColor": "#ffffff",
  "showValues": true,
  "showLabels": true,
  "showGrid": true,
  "showAnimation": true,
  "showPercentage": false,
  "showTotal": true,
  "enableTooltip": true
}
  }
}
Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

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