{"uid":"cap_6-mOmHzzUPhcgISaUDq_V","slug":"fixed-rate-periodic-loan-payment-rolling-mean-report-634263fb","name":"Fixed-Rate Periodic Loan Payment Rolling Mean Report","description":"Fixed-rate periodic loan payment - Rolling mean report: Calculate trailing full-window means over ordered observations, preserving invalid-row gaps. Metric: Fixed-rate periodic loan payment. Supplied figures only; returns JSON with formula, units and limitations. One of 50 calculators with 20 analysis modes. No live feed, financial advice or trade execution. 0.01 USDC includes one bounded rolling mean report report.","url":"https://market.datapackvibe.com/x402/assistant-finance-loan-payment-rolling?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"rows":{"type":"array","items":{"type":"object","required":["principal","annual_nominal_rate_percent","payments_per_year","number_of_payments"],"properties":{"principal":{"type":"number","default":10000,"maximum":1000000000000,"minimum":0,"description":"Amount in a consistent supplied currency and reporting period"},"payments_per_year":{"type":"integer","default":12,"maximum":365,"minimum":1},"number_of_payments":{"type":"integer","default":36,"maximum":36500,"minimum":1},"annual_nominal_rate_percent":{"type":"number","default":6,"maximum":100,"minimum":0,"description":"Percent units: enter 5 for 5%, not 0.05"}},"additionalProperties":false},"default":[{"principal":10000,"payments_per_year":12,"number_of_payments":36,"annual_nominal_rate_percent":6},{"principal":11000,"payments_per_year":13,"number_of_payments":40,"annual_nominal_rate_percent":6.6000000000000005},{"principal":10000,"payments_per_year":12,"number_of_payments":36,"annual_nominal_rate_percent":6},{"principal":11000,"payments_per_year":13,"number_of_payments":40,"annual_nominal_rate_percent":6.6000000000000005}],"maxItems":200,"minItems":2},"window":{"type":"integer","default":2,"maximum":200,"minimum":2}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_BrwNhwxmDZafIqlGRRvYE","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates trailing full-window rolling means over a series of fixed-rate periodic loan payment observations, returning results with formula, units, and limitations.","exampleAgentPrompt":"Can you run a rolling mean report on these 4 loan scenarios using a window of 2: a $10,000 loan at 6% with 12 payments per year over 36 payments, an $11,000 loan at 6.6% with 13 payments per year over 40 payments, and then those two again — I want to see the trailing average loan payment smoothed across the series.","exampleUseCases":[{"title":"Smoothing mortgage payment series across quarters","prompt":"I have a series of 6 fixed-rate mortgage scenarios with varying principals and rates — can you calculate the rolling mean of the periodic payment amounts using a window of 3 so I can see the smoothed trend? Principals range from $200,000 to $350,000, all at 12 payments per year, rates between 4% and 7%, over 360 payments each."},{"title":"Detecting payment drift in loan portfolio review","prompt":"We're reviewing a portfolio of 10 loan observations. Can you compute a trailing 4-window rolling mean of the fixed-rate periodic payment for each row? The loans have principals from $5,000 to $50,000, annual rates from 5% to 9%, 12 payments per year, and terms from 24 to 60 payments."},{"title":"Comparing smoothed payment across rate environments","prompt":"I want to compare how the rolling average of a $25,000 loan payment shifts as the annual rate changes — I have 8 ordered scenarios with rates stepping from 3% to 10% at 12 payments per year over 48 payments. Can you run a rolling mean report with a window of 2 and tell me the formula and units used?"}],"resultDescription":"A JSON object containing the rolling mean values computed over the ordered loan payment observations using the specified window size, along with the mathematical formula applied, the units of the output, and any limitations or invalid-row gaps preserved in the result.","failureModes":["Fewer than 2 rows provided — minimum row count not met","Window size exceeds number of rows — no full windows can be computed","Missing required fields (principal, annual_nominal_rate_percent, payments_per_year, number_of_payments) in any row","Annual rate outside 0–100 range or principal exceeds 1 trillion — validation error","More than 200 rows submitted — exceeds maximum input size","Payment count fails (e.g. number_of_payments > 36500) — out-of-range error"],"whenToPreferThis":"Choose this endpoint when you need to smooth a time-ordered series of fixed-rate periodic loan payment values using a trailing full-window rolling mean, especially when preserving gaps for invalid rows is important. It is purpose-built for loan payment metric analysis rather than general statistical rolling windows, and returns structured JSON with formula and units — ideal for financial reporting workflows that need audit-friendly output.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T00:58:36.009Z","isFirstParty":false,"canonicalSlug":"fixed-rate-periodic-loan-payment-rolling-mean-report-634263fb"}