{"ok":true,"tool":"Loan Calculator","operation":"calculate-loan","description":"Calculate monthly payment, total paid, and total interest for a fixed-rate loan.","method":"POST","endpoint":"/api/loan-calculator","webUrl":"https://ultraquick.tools/tools/loan-calculator","parameters":{"type":"object","properties":{"principal":{"type":"number","description":"Loan amount (principal)"},"annualRate":{"type":"number","description":"Annual interest rate as a percentage (e.g. 5 for 5 percent)"},"years":{"type":"number","description":"Loan term in years"}},"required":["principal","annualRate","years"]},"response":{"type":"object","properties":{"monthlyPayment":{"type":"number"},"totalPaid":{"type":"number"},"totalInterest":{"type":"number"},"numberOfPayments":{"type":"integer"}}},"example":{"request":{"principal":200000,"annualRate":5,"years":30},"response_shape":{"type":"object","properties":{"monthlyPayment":{"type":"number"},"totalPaid":{"type":"number"},"totalInterest":{"type":"number"},"numberOfPayments":{"type":"integer"}}}},"howToCall":"POST a JSON body to https://ultraquick.tools/api/loan-calculator. Returns {\"ok\":true,\"result\":{...}} on success or {\"ok\":false,\"error\":\"...\"} on failure. No auth, CORS-enabled.","parametersSummary":"  principal (number, required) — Loan amount (principal)\n  annualRate (number, required) — Annual interest rate as a percentage (e.g. 5 for 5 percent)\n  years (number, required) — Loan term in years","curlExample":"curl -X POST https://ultraquick.tools/api/loan-calculator -H \"Content-Type: application/json\" -d '{\"principal\":200000,\"annualRate\":5,\"years\":30}'"}