{"uid":"cap_dWIRQhBk_Tnj78_O95SLw","slug":"geekvault-loan-calculator-1078d44a","name":"GeekVault Loan Calculator","description":"Network, docs, image, web, and dev utility tools paid per call via x402. No signup, no API keys, no subscriptions — just USDC on Base.","url":"https://api.geekvault.dev/dev-tools/v1/loan-calculate?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["principal","term_months","annual_rate_percent"],"properties":{"principal":{"type":"number"},"term_months":{"type":"integer"},"annual_rate_percent":{"type":"number"}}},"responseSchema":{"type":"object","required":["principal","annual_rate_percent","term_months","monthly_payment","total_paid","total_interest"],"properties":{"principal":{"type":"number","format":"double"},"total_paid":{"type":"number","format":"double"},"term_months":{"type":"integer","format":"int32","minimum":0},"total_interest":{"type":"number","format":"double"},"monthly_payment":{"type":"number","format":"double"},"annual_rate_percent":{"type":"number","format":"double"}}},"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_vMR24R3M2QgiiX5NPw1hj","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":"Calculates monthly payment, total paid, and total interest for a loan given principal, term, and annual interest rate","exampleAgentPrompt":"Can you calculate the monthly payment, total amount paid, and total interest for a $25,000 car loan over 60 months at 6.5% annual interest?","exampleUseCases":[{"title":"Personal loan affordability check","prompt":"I'm thinking of taking out a $15,000 personal loan over 36 months at 8.9% annual interest — what would my monthly payment be and how much total interest would I end up paying?"},{"title":"Home mortgage cost estimate","prompt":"Can you figure out the monthly payment and total interest for a $350,000 mortgage at 7.2% annual rate over 360 months?"},{"title":"Business equipment financing","prompt":"We're financing $80,000 of equipment at 5.5% annual interest over 48 months — what will our monthly payment be and what's the total we'll pay back?"}],"resultDescription":"Returns a JSON object with the original principal, annual rate, term in months, calculated monthly payment, total amount paid over the life of the loan, and total interest paid — all as floating-point numbers.","failureModes":["Missing required fields (principal, term_months, or annual_rate_percent) result in a 4xx error","Non-numeric or negative values for principal or rate may cause validation errors","term_months must be a positive integer; zero or negative values will likely fail","Payment failure via x402 (insufficient USDC balance) will block the call before computation"],"whenToPreferThis":"Use this endpoint when you need a quick, serverless loan amortization calculation without building your own math — especially in agentic workflows where the user provides principal, rate, and term and expects monthly payment and total interest instantly. No signup or API key required; pay per call with USDC on Base via x402.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T07:03:04.854Z","isFirstParty":false,"canonicalSlug":"geekvault-loan-calculator-1078d44a"}