Math & Numbers
Covariance Calculator
Calculate sample and population covariance from paired numeric data
json· JSON resultOpen tool
Quick start
Call this tool from your code in three languages.
cURL
curl -X POST 'https://api.elysiatools.com/en/api/tools/covariance-calculator' \
-H 'Content-Type: application/json' \
-d '{"pairedData":"1, 2\n2, 3\n3, 5\n4, 4\n5, 6","xValues":"","yValues":"","covarianceType":"both","decimalPlaces":4,"includeCorrelation":true}'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/covariance-calculatorParameters
| Name | Type | Required | Description |
|---|---|---|---|
| pairedData | textarea | No | — |
| xValues | text | No | — |
| yValues | text | No | — |
| covarianceType | select | No | — |
| decimalPlaces | number | No | — |
| includeCorrelation |
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-covariance-calculator": {
"name": "covariance-calculator",
"description": "Calculate sample and population covariance from paired numeric data",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=covariance-calculator",
"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": "covariance-calculator",
"arguments": {
"pairedData": "1, 2\n2, 3\n3, 5\n4, 4\n5, 6",
"xValues": "",
"yValues": "",
"covarianceType": "both",
"decimalPlaces": 4,
"includeCorrelation": 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).
Questions or issues? Contact [email protected]