the402 endpoint detail

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x402.forgemesh.io financial-calculator

https://x402.forgemesh.io/financial-calculator

payable

Financial calculator API: compound interest (final amount, interest earned, effective annual rate), loan/mortgage payment (monthly payment, total paid, total interest), or ROI — from structured numeric inputs. For fintech, budgeting, and planning agents. Not financial advice; the arithmetic is exact.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.002
Network
base
Pay to
0x850363a27F0aC6fEb9C7a3eC4C1d295262dF9432
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
43 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:17:29.612Z (2d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.forgemesh.io%2Ffinancial-calculator"