Finance
Auto Loan Calculator
Calculate your car loan monthly payment factoring in vehicle price, down payment, trade-in value, sales tax, and registration fees. Shows amount financed, total interest, total cost, a descending balance curve, and a yearly amortization schedule.
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Quick start
Call this tool from your code in three languages.
cURL
curl -X POST 'https://api.elysiatools.com/en/api/tools/auto-loan-calculator' \
-H 'Content-Type: application/json' \
-d '{"vehiclePrice":35000,"downPayment":5000,"tradeInValue":8000,"salesTaxRate":7,"fees":500,"interestRate":5.5,"loanTerm":"60","decimalPlaces":2}'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/auto-loan-calculatorParameters
| Name | Type | Required | Description |
|---|---|---|---|
| vehiclePrice | number | Yes | — |
| downPayment | number | No | — |
| tradeInValue | number | No | — |
| salesTaxRate | number | No | — |
| fees | number | No | — |
| interestRate |
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-auto-loan-calculator": {
"name": "auto-loan-calculator",
"description": "Calculate your car loan monthly payment factoring in vehicle price, down payment, trade-in value, sales tax, and registration fees. Shows amount financed, total interest, total cost, a descending balance curve, and a yearly amortization schedule.",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=auto-loan-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": "auto-loan-calculator",
"arguments": {
"vehiclePrice": 35000,
"downPayment": 5000,
"tradeInValue": 8000,
"salesTaxRate": 7,
"fees": 500,
"interestRate": 5.5,
"loanTerm": "60",
"decimalPlaces": 2
}
}
}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).