Math & Numbers
Solve common percentage questions including percentage of a total, value from a percentage, and percentage change
Call this tool from your code in three languages.
curl -X POST 'https://api.elysiatools.com/en/api/tools/math-percentage-calculator' \
-H 'Content-Type: application/json' \
-d '{"mode":"percentage-of-total","value":"45","total":"120","percentage":"","originalValue":"","newValue":"","decimalPlaces":2}'Send a POST request with your inputs as JSON. File parameters require a separate upload first.
POST https://api.elysiatools.com/en/api/tools/math-percentage-calculator| Name | Type | Required | Description |
|---|---|---|---|
| mode | select | No | — |
| value | text | No | — |
| total | text | No | — |
| percentage | text | No | — |
| originalValue | text | No | — |
| newValue |
Add this tool to your Model Context Protocol server so AI agents can list and call it.
Add this block to your MCP client configuration:
{
"mcpServers": {
"elysiatools-math-percentage-calculator": {
"name": "math-percentage-calculator",
"description": "Solve common percentage questions including percentage of a total, value from a percentage, and percentage change",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=math-percentage-calculator",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}After connecting to the SSE endpoint, list the exposed tools:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}Invoke the tool by its id, passing arguments built from its parameters:
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "math-percentage-calculator",
"arguments": {
"mode": "percentage-of-total",
"value": "45",
"total": "120",
"percentage": "",
"originalValue": "",
"newValue": "",
"decimalPlaces": 2
}
}
}Questions or issues? Contact [email protected]
| text |
| No |
| — |
| decimalPlaces | number | No | — |
JSON result
{
"key": {...},
"metadata": {
"key": "value"
},
"error": "Error message (optional)",
"message": "Notification message (optional)"
}