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GET /v1/loan

Loan amortization

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/fincalc-api

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Code snippets

curl "https://api.oanor.com/fincalc-api/v1/loan" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/fincalc-api/v1/loan", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/fincalc-api/v1/loan");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
    "https://api.oanor.com/fincalc-api/v1/loan",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "principal": 200000,
        "total_paid": 431676.38,
        "annual_rate": 6,
        "term_months": 360,
        "extra_payment": 0,
        "total_interest": 231676.38,
        "monthly_payment": 1199.1,
        "number_of_payments": 360,
        "base_monthly_payment": 1199.1
    },
    "meta": {
        "timestamp": "2026-06-02T16:52:02.733Z",
        "request_id": "4e0c4df5-979a-44be-83aa-694d315b79e3"
    },
    "status": "ok",
    "message": "Loan amortization",
    "success": true
}