{"uid":"cap_7m_7ic9P1EB9LPFyXV0qt","slug":"numora-annuity-present-future-value-calculator-2430792b","name":"Numora Annuity Present/Future Value 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://numormo.vercel.app/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":"registry","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":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_DUySgDJ2U2MZ3ESifcNr3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the present or future value of an annuity (ordinary or annuity-due) given a periodic payment amount, interest rate, and number of periods.","exampleAgentPrompt":"Calculate the present value of an ordinary annuity with a $500 monthly payment, a 6% annual interest rate, and 120 periods.","exampleUseCases":[{"title":"Retirement income stream valuation","prompt":"What is the present value of an ordinary annuity paying $2,000 per month at a 4.5% interest rate over 240 periods? I want to know what that income stream is worth today."},{"title":"Loan payoff present value check","prompt":"Calculate the value of an annuity-due with a $350 payment, a 7% interest rate, and 60 periods — I'm trying to figure out what this loan obligation is really worth."},{"title":"Investment annuity future value planning","prompt":"I'm planning to invest $1,000 every quarter for 20 years (80 periods) at a 5% rate. Can you compute the future value of that ordinary annuity so I can see what I'd end up with?"}],"resultDescription":"Returns a JSON object with 'success' (true), 'result' (an object containing the computed annuity value and related figures), and 'computation' (a human-readable string describing what was computed, e.g. the type of annuity and the resulting present or future value).","failureModes":["Missing required fields (rate, payment, or periods) returns a validation error","Invalid annuity type value outside 'ordinary' or 'due' enum causes a bad request","Non-positive periods or negative rate may produce mathematically undefined or unexpected results","Network or server errors on the Vercel deployment may return 5xx responses"],"whenToPreferThis":"Use this endpoint when you need a fast, dependency-free calculation of annuity present or future value as part of financial planning, loan analysis, or retirement modeling — especially in automated agent pipelines that require deterministic math without calling a full financial data service. Prefer this over general-purpose code execution when you want a hosted, pay-per-use computation with a clean JSON response.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:40:34.475Z","isFirstParty":false}