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APR ↔ APY Converter (x402toll)
x402
APR ↔ APY Converter (x402toll) is a paid API for AI agents from x402toll.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Converts between APR and APY at any compounding frequency, including periodic and continuous compounding.
Price / call$0.02
Success—
StatusUnknown
How this service works
Convert between APR and APY at any compounding frequency (or continuous).
Output
Returns the converted interest rate (APR or APY) based on the given rate, direction, compounding type, and frequency. Provides the numeric result as a percentage value.
Example use cases
Example prompt
“What's the APY on a 6.5% APR compounded monthly? Convert APR to APY with periodic compounding, 12 times per year.”
Technical details
Endpoint
POSThttps://x402toll.com/v1/crypto/apr-apyWhen to prefer
Use this endpoint when you need a quick, accurate APR-to-APY or APY-to-APR conversion at a specific compounding frequency (monthly, quarterly, daily, or continuous), especially in financial planning, crypto yield comparisons, or loan analysis contexts where the compounding convention matters.
Side effects
- Missing or invalid ratePct (non-numeric or out of range) returns a validation error
- Invalid direction enum value returns a bad request error
- Invalid compounding enum value returns a bad request error
- compoundsPerYear of 0 or negative causes division error
- Payment not provided or insufficient USDC balance returns 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| ratePct | number | |
| direction | string | |
| compounding | string | |
| compoundsPerYear | number |
Tags
x402
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