Compute a fixed-rate mortgage monthly payment using the standard amortisation formula M = P·r(1+r)^n / ((1+r)^n - 1). Assumes monthly compounding.
This page documents the HTTP endpoint POST /api/tools/mortgage-calculate/execute. See the MCP reference →
Call it over REST
POST https://api.findutils.com/api/tools/mortgage-calculate/execute · no API keys · 60 requests/min per IP
Execute — verified arguments
curl -X POST https://api.findutils.com/api/tools/mortgage-calculate/execute \
-H "Content-Type: application/json" \
-d '{
"principal": 200000,
"annual_rate": 0.05,
"years": 30
}'Parameter schema for this endpoint
curl https://api.findutils.com/api/tools/mortgage-calculateInput schema
| Argument | Type | Required | Description |
|---|---|---|---|
| principal | number | yes | Loan amount. |
| annual_rate | number | yes | Annual interest rate as a decimal (0.065 = 6.5%). |
| years | number | yes | Loan term in years. |
Example arguments (verified)
{
"principal": 200000,
"annual_rate": 0.05,
"years": 30
}Also an MCP tool
Claude, Cursor, and any MCP client can call this tool as
findutils:mortgage_calculate after one connect command.
Connect once
claude mcp add findutils --transport http https://mcp.findutils.com/More Finance tools
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