Developer Platform & API Architecture

Integrate the universal payment rail.

Build on top of EterPay's robust APIs. Featuring PayPal Orders v2 integration, real-time ECB benchmark quotes, and structured AI function calling.

PayPal Orders v2 Creation (Idempotent)

import httpx
import uuid

# Create PayPal v2 Order via EterPay Backend
async def create_cross_border_order(amount: float, currency: str):
    headers = {
        "PayPal-Request-Id": str(uuid.uuid4()), # Enforce Idempotency
        "Content-Type": "application/json"
    }
    payload = {
        "intent": "CAPTURE",
        "purchase_units": [{
            "amount": {
                "currency_code": currency,
                "value": f"{amount:.2f}"
            },
            "description": "EterPay Anywhere Cross-Border Settlement"
        }]
    }
    async with httpx.AsyncClient() as client:
        res = await client.post("/api/paypal/create-order", json=payload, headers=headers)
        return res.json()

Zero-Key European Central Bank Rates Pipeline

# Fetch European Central Bank Free FX Rates
import httpx

async def get_ecb_fx_benchmark(base: str = "INR"):
    async with httpx.AsyncClient() as client:
        # Zero API key required, 100% free ECB data
        resp = await client.get(f"https://api.frankfurter.app/latest?from={base}")
        return resp.json()["rates"]

Fintech Security Standards for Developers

Always pass UUID v4 PayPal-Request-Id to prevent double charging on retry.

Validate PayPal webhook signatures using cert URL and HMAC verification.

Isolate client secrets in server-side .env files; never expose in Next.js public bundles.