{"name":"loan_calc","title":"Level-payment loan","description":"Monthly payment, total interest and total paid for a fixed-rate amortizing loan, in exact arithmetic. The payment is rounded once to the currency scale and the final payment absorbs the rounding so the balance ends at exactly zero.","inputSchema":{"type":"object","properties":{"principal":{"type":"string"},"annualRatePercent":{"type":"string"},"termMonths":{"type":"integer","minimum":1,"maximum":600},"scale":{"type":"integer","minimum":0,"maximum":8},"rounding":{"description":"rounding rule; default half_up (ties away from zero). half_even is banker's rounding","type":"string","enum":["down","up","floor","ceil","half_up","half_even","half_down"]}},"required":["principal","annualRatePercent","termMonths"],"additionalProperties":false},"example":{"principal":"200000","annualRatePercent":"6","termMonths":360},"call":{"method":"POST","url":"https://logicnodes.io/v1/tools/loan_calc","body":"JSON object matching inputSchema"},"price":"$0.001","freeAllowance":"25 calls per day per caller (signed wallet, else IP + user agent), then x402 ($0.001 in USDC); see https://logicnodes.io/v1/payments/methods"}