{"uid":"cap_XtZwuJlsT8cdl4pW1OqvA","slug":"agenttools-compound-interest-calculator-a66fd9b6","name":"AgentTools Compound Interest Calculator","description":"Project the future value of a deposit with compound interest: choose annual, semi-annual, quarterly, monthly, weekly or daily compounding and see total interest earned. Use this when an agent needs to future value with any compounding frequency.","url":"https://agenttools-hub.vercel.app/api/v1/calculators/compound-interest-calculator?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"],"type":"string"},"queryParams":{"type":"object","required":["principal","annualRate","years"],"properties":{"years":{"type":"number","description":"Years"},"principal":{"type":"number","description":"Principal"},"annualRate":{"type":"number","description":"Annual rate %"},"timesPerYear":{"enum":[1,2,4,12,52,365],"type":"number","description":"Compounding"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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_qYImEuGexmguLZAt_VaTp","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":"Projects the future value of a deposit with compound interest across multiple compounding frequencies (annual, semi-annual, quarterly, monthly, weekly, or daily)","exampleAgentPrompt":"If I put $15,000 into a savings account today at a 4.5% annual rate, what will it be worth after 10 years with monthly compounding?","exampleUseCases":[{"title":"Retirement savings growth projection","prompt":"I have $50,000 to invest at a 6% annual interest rate — can you tell me what it'll grow to after 30 years if it compounds daily?"},{"title":"Comparing compounding frequency impact","prompt":"How much more would I earn on $25,000 at 5% over 10 years if it compounds monthly versus just once a year?"},{"title":"Short-term CD or bond projection","prompt":"If I put $8,000 into a 2-year CD at 4.8% annual interest with quarterly compounding, how much total interest will I earn and what's the final balance?"}],"resultDescription":"Returns the projected future value of the deposit, the total interest earned over the period, and a breakdown showing how compounding frequency affects growth. The response includes numeric values for the final balance and accumulated interest based on the supplied principal, rate, duration, and compounding frequency.","failureModes":["Missing required parameters (principal, annualRate, years) returns a validation error","Invalid compounding frequency not in the allowed enum [1,2,4,12,52,365] returns an error","Non-numeric values for numeric fields cause a bad request response","Negative principal or rate values may produce unexpected or erroneous output","Network/server errors from the Vercel deployment returning 500-level responses"],"whenToPreferThis":"Use this endpoint when you need a fast, deterministic compound interest calculation with a specific compounding frequency (annual, semi-annual, quarterly, monthly, weekly, or daily). It is ideal for savings projections, investment planning, and loan/CD comparisons where exact compounding schedules matter. Prefer this over simple interest calculators when the compounding frequency significantly impacts the result.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T12:43:10.693Z","isFirstParty":false,"canonicalSlug":"agenttools-compound-interest-calculator-a66fd9b6"}