Calc Loan API

Loan/mortgage payment calculator — 'principal-rate-years' (e.g. 300000-6.5-30) returns monthly payment, total paid, total interest. Exact amortization for ANY combination. For fintech, lending, and real-estate agents.

$0.01 / call paid in USDC on Base via x402 — no API key, no signup.

Endpoint

GET https://api.gocreativeai.com/v1/calc/loan/{arg}

How an agent calls it

curl https://api.gocreativeai.com/v1/calc/loan/example
# → HTTP 402 Payment Required (price quote)
# your x402 client autopays in USDC and retries
# → 200 OK with clean JSON

Python (x402 SDK)

import httpx
from x402.clients.httpx import x402_payment_required
with httpx.Client() as c:
    c.event_hooks["response"]=[x402_payment_required(wallet_private_key="0x_YOUR_KEY",network="base")]
    data = c.get("https://api.gocreativeai.com/v1/calc/loan/example").json()

Part of 730 pay-per-call APIs for AI agents. Native MCP server. Machine-readable catalog at /.well-known/x402.