Down Payment Calculator

Finance REST API MCP

Return the down payment, closing costs, total cash needed, remaining amount to save, months to save, target month, loan amount, and estimated PMI for a home purchase, plus a comparison table for 5%, 10%, 15%, 20%, and 25% down. PMI is estimated at 1% of the loan per year when the down payment is below 20%.

This page documents the MCP tool findutils:down_payment_calculator. See the REST reference →

Use in the browser View as Markdown

Call it over MCP

Tool name findutils:down_payment_calculator · no API keys · 120 requests/min per IP

Claude Code

claude mcp add findutils --transport http https://mcp.findutils.com/

Claude Desktop — claude_desktop_config.json

{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/"
    }
  }
}

Raw JSON-RPC (any MCP client) — verified example

curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "down_payment_calculator",
      "arguments": {
        "home_price": 350000,
        "down_payment_percent": 20,
        "current_savings": 20000,
        "monthly_savings": 1000,
        "closing_cost_percent": 3,
        "start_month": "2026-01"
      }
    }
  }'

Input schema

Argument	Type	Required	Description
home_price	number	yes	Purchase price of the home. Must be > 0.
down_payment_percent	number	no	Down payment as a percent of the price (20 = 20%). Default: 20.
current_savings	number	no	Cash already saved. Default: 0.
monthly_savings	number	no	Amount saved every month. Default: 0.
closing_cost_percent	number	no	Closing costs as a percent of the price. Default: 3.
start_month	string	no	Month the saving starts, as YYYY-MM. Default: the current UTC month.

Example arguments (verified)

{
  "home_price": 350000,
  "down_payment_percent": 20,
  "current_savings": 20000,
  "monthly_savings": 1000,
  "closing_cost_percent": 3,
  "start_month": "2026-01"
}

Also a REST endpoint

The same tool answers plain HTTP at POST /api/tools/down-payment-calculator/execute — no key, 60 requests/min.

Open the REST reference for Down Payment Calculator →

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