Mobile banking protocol analysis, authorization flows, ATM-QR withdrawals, and production-ready API source delivery
We provide end-to-end delivery: protocol tracing and authorization flow recreation, OpenFinance-style API mapping, and backend-deployable API implementations with documentation.
# POST /api/v1/iscep/virtual-accounts
Content-Type: application/json
Authorization: Bearer <CLIENT_JWT>
{
"merchant_id": "M12345",
"customer_name": "John Doe",
"amount_expected": 150000.00,
"expires_at": "2025-11-30T23:59:59Z",
"metadata": { "order_id": "ORD-98765" }
}
Response 201 Created
{
"va_number": "8881234567890",
"bank_code": "SEA",
"expires_at": "2025-11-30T23:59:59Z",
"callback_url": "https://your.app/webhooks/seabank/va"
}
// Webhook: When VA receives payment, platform posts to callback_url with transaction_id and amount
All integration work is based on client authorization or public / authorized APIs. We provide data minimization, encryption in transit, audit logs and consent records, and NDA if needed.
We are a software studio focused on App protocol analysis and authorized API integration. Our team has years of experience in fintech, payment gateways, and banking-grade interfaces, delivering end-to-end API solutions with compliance as a priority.
To start a project or request a quote, please visit our contact page and submit your target App name and integration scenario; we will respond within 24 hours with a plan and timeline.
Paytm is a leading Indian mobile payments and financial services platform, offering QR payments, Soundbox, offline card swipes and POS integration. It supports UPI channels domestically and internationally and provides privacy controls (hide/show transactions), personalized UPI IDs, and downloadable reconciliation statements in Excel/PDF.
Note: The above information is for technical integration references and is not an official endorsement or contract with Paytm.