Math & Numbers
Calculate permutations with or without repetition, plus circular arrangements, with formulas and optional steps
Call this tool from your code in three languages.
curl -X POST 'https://api.elysiatools.com/en/api/tools/permutation-calculator' \
-H 'Content-Type: application/json' \
-d '{"totalItems":5,"selectedItems":3,"permutationType":"without-repetition","showFormula":true,"showSteps":true}'Send a POST request with your inputs as JSON. File parameters require a separate upload first.
POST https://api.elysiatools.com/en/api/tools/permutation-calculator| Name | Type | Required | Description |
|---|---|---|---|
| totalItems | number | Yes | — |
| selectedItems | number | Yes | — |
| permutationType | select | Yes | — |
| showFormula | checkbox | No | — |
| showSteps | checkbox | No | — |
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-permutation-calculator": {
"name": "permutation-calculator",
"description": "Calculate permutations with or without repetition, plus circular arrangements, with formulas and optional steps",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=permutation-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": "permutation-calculator",
"arguments": {
"totalItems": 5,
"selectedItems": 3,
"permutationType": "without-repetition",
"showFormula": true,
"showSteps": true
}
}
}Questions or issues? Contact [email protected]
JSON result
{
"key": {...},
"metadata": {
"key": "value"
},
"error": "Error message (optional)",
"message": "Notification message (optional)"
}