{"uid":"cap_7tNYCyi6iEK592UPcBWt2","slug":"numora-annuity-calculator-892016c5","name":"Numora Annuity Calculator","description":"100 pure math computation endpoints for AI agents. Statistics, financial math, linear algebra, equation solving, calculus, number theory, sequence generation, and unit conversions. Zero external dependencies. x402 micropayments on Base.","url":"https://numorapoi.orbonomy.xyz/api/financial/annuity","method":"POST","headers":{},"bodySchema":{"type":"object","required":["rate","payment","periods"],"properties":{"rate":{"type":"number"},"type":{"enum":["ordinary","due"],"type":"string"},"payment":{"type":"number"},"periods":{"type":"integer"}}},"responseSchema":{"type":"object","required":["success","result","computation"],"properties":{"result":{"type":"object","description":"Computation result varies by endpoint"},"success":{"type":"boolean","description":"Always true on success"},"computation":{"type":"string","description":"Human-readable description of what was computed"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_fSWo9hNGtw_EXRcnsBEHF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the present or future value of an annuity given a periodic payment amount, interest rate, and number of periods","exampleAgentPrompt":"What's the present value of an ordinary annuity with monthly payments of $800 at an annual interest rate of 6% over 60 periods?","exampleUseCases":null,"resultDescription":"Returns a JSON object with a success flag, a result object containing the computed annuity value (present or future depending on type), and a human-readable computation string describing what was calculated.","failureModes":["Missing required fields (rate, payment, or periods) returns a validation error","Non-positive periods integer causes computation failure","Extreme rate values (e.g. negative or very large) may produce mathematically undefined or infinite results","Invalid annuity type string may default to ordinary or return an error","Payment processing failure via x402 returns 402 status before computation begins"],"whenToPreferThis":"Choose this endpoint when you need a pure serverless, dependency-free annuity computation without connecting to a financial data provider. Ideal for AI agents doing financial planning calculations, retirement modeling, or loan analysis where only mathematical formulas are needed and no live market data is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:54:12.613Z","isFirstParty":false}