Loan Calculate MCP tool

MCP findutils:loan_calculate

Amortise a fixed-rate loan and show the impact of an optional monthly extra payment on payoff time and total interest.

Needs an API key. Running a tool needs an API key. Keys are not for sale yet: ask for early access. About API keys

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Arguments

application/json

principal

number required

Loan balance.
annual_rate

number required

Annual interest rate as a decimal.
years

number required

Contract length in years.
extra_payment

number optional

Optional monthly extra paid on top of the standard payment.

Example arguments

Verified

{
  "principal": 10000,
  "annual_rate": 0.05,
  "years": 5
}

claude mcp add findutils --transport http https://mcp.findutils.com/ --header "Authorization: Bearer YOUR_API_KEY"

{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

curl -X POST https://mcp.findutils.com/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "loan_calculate",
      "arguments": {
        "principal": 10000,
        "annual_rate": 0.05,
        "years": 5
      }
    }
  }'

Also a REST endpoint

The same tool answers plain HTTP at POST /api/tools/loan-calculate/execute.

REST reference

Rate limit: 120 a minute, per IP
Auth: API key
REST id: loan-calculate
MCP name: loan_calculate
Category: Finance
Machine-readable: openapi.json · markdown.md

Arguments

Example arguments

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