{"uid":"cap_INXnfYk2uGVItZlr1pAn8","slug":"loan-amortization-calculator-c37667e0","name":"Loan Amortization Calculator","description":"Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.","url":"https://anibalb.duckdns.org/x402/loan-amortization?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"schedule":[{"period":1,"balance":9852.95,"interest":41.67,"principal":147.05}],"total_interest":1323.24,"monthly_payment":188.71}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_qX3fw-3ai70nquycuN5Es","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes a full loan amortization schedule including monthly payment, per-period interest and principal breakdown, and total interest paid","exampleAgentPrompt":"Can you calculate the full amortization schedule for a $10,000 loan at 5% annual interest over 5 years, showing me each month's payment, interest, and remaining balance?","exampleUseCases":[{"title":"Mortgage payment planning","prompt":"I'm looking at a $350,000 mortgage at 6.5% annual interest over 30 years — can you show me the full amortization schedule so I see how much of each monthly payment goes to interest vs principal?"},{"title":"Car loan total cost analysis","prompt":"I want to take out a $25,000 car loan at 7% interest over 48 months. Can you calculate my monthly payment and show me how much total interest I'll end up paying?"},{"title":"Personal loan comparison","prompt":"I'm considering a $15,000 personal loan at 9% annual interest repaid over 3 years. Give me the full payment schedule broken down by period so I can see when I'll hit the halfway point on the principal."}],"resultDescription":"Returns a JSON object containing: an array 'schedule' with one entry per payment period (period number, remaining balance, interest paid, principal paid), the fixed 'monthly_payment' amount, and 'total_interest' paid over the life of the loan.","failureModes":["Missing required query parameters (loan amount, rate, or term) returns an error or empty response","Invalid numeric values (negative principal, zero term) may return computation errors","Rate or term values outside supported ranges may produce unexpected results","Network or payment failure via x402 protocol returns 402 Payment Required"],"whenToPreferThis":"Choose this endpoint when you need a detailed, period-by-period amortization breakdown for a fixed-rate loan — especially useful for agents doing financial planning, loan comparison, or mortgage analysis. It is pay-per-call with no account setup required, making it ideal for on-demand calculations without API key management. Prefer this over generic financial APIs when you need the full schedule (not just the monthly payment) in a single structured response.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:42:06.353Z","isFirstParty":false,"canonicalSlug":"loan-amortization-calculator-c37667e0"}