One

OnePay / One — OpenFinance Integration & Protocol Analysis

Protocol reverse‑engineering, OpenData/OpenBanking integration, authorized API delivery — runnable source, docs, and compliance guidance.

Starting at $300

OpenData · OpenFinance · Protocol Analysis · Authorized API

Turn One into a secure, documented API for your systems

We analyse the One app protocol and deliver a compliant, production-ready API (Node/Python/Go) that exposes balance, transactions, transfers and reporting—complete with OpenAPI spec and test scripts.

Authentication & Session — map and implement the app's auth flow (OAuth-like tokens, device binding, refresh, 2FA), provide robust token renewal and session management wrappers.

Accounts & Balances — normalized endpoints to fetch wallets, balances, multi-currency holdings and interest/earnings summaries for One/GOfinance-like products.

Transactions & Statements — paginated transaction feeds, filtering (date/type), CSV/Excel export and reconciliation hooks for accounting systems.

Payments & Remittance — build secure payment initiation (card, bank transfer, QR), status polling and webhook delivery for real‑time settlement updates.

Get a Quote See Deliverables

Deliverables — what you get

Production-grade Deliverables

Protocol analysis report & sequence diagrams
OpenAPI (3.0) specification and Postman collection
Runnable source code (Node/Express or Python/Flask) with auth adapters
Automated tests, CI examples, and load test scripts
Security & compliance checklist (data minimisation, consent logs)

API Example — Statement fetch (pseudo)

// POST /api/v1/one/statement
POST /api/v1/one/statement
Content-Type: application/json
Authorization: Bearer <ACCESS_TOKEN>

{
  'account_id': 'one_wallet_123',
  'from': '2025-10-01',
  'to': '2025-10-31',
  'format': 'json',
  'include_pending': false
}

Response: {
  'status': 'ok',
  'transactions': [ { 'id':'txn_1','date':'2025-10-03','amount':-120.50,'currency':'INR','merchant':'Grocery' } ],
  'page':1,'total_pages':1
}

Typical integration scenarios

Fraud monitoring & consent capture, card & QR payment flows, daily balance sync to ERP, multi-entity account aggregation and cross-border remittance reporting.

Compliance & Security

We deliver implementations that follow local financial regulations (KYC/KYB where required), data protection best practices (GDPR-like consent records), and secure credential handling. We avoid storing raw credentials and implement token vaulting and rotation.

Business Benefits

Fast time-to-market with ready SDKs
Lower risk: tested payment flows and reconciliation
Full handover: docs, tests, and runbook

API Integration Instructions (High-level)

Share target app name (One) and required scenarios (balance sync, payments, statements).
We run a short protocol reconnaissance (authorized test account or open API) — 2–5 work days.
Prototype auth adapter + token management (device binding / 2FA support).
Deliver API endpoints, OpenAPI spec, SDK examples and automated tests.
Onboarding: help deploy to your environment and perform acceptance tests.

Quick-start Integration Checklist

Do you have a test account or developer tokens for One? (preferred)
Define required endpoints: /balances, /transactions, /payments, /webhooks
Decide preferred runtime: Node.js / Python / Go
Provide compliance constraints (data retention, consent capture)

About Our Studio

We are a technical integration studio specializing in app protocol analysis and authorized API integration. Our engineers have deep experience in fintech, payments, OpenBanking and secure data delivery. We provide end-to-end delivery: protocol analysis → refactored API → SDKs → documentation → test suites.

Cross-platform (Android/iOS) protocol mapping
Deliverables include OpenAPI, runnable source code and deployment playbooks
Transparent pricing and staged delivery starting at $300

Contact & Next Steps

Ready to proceed? Share the One app package name (already provided) and a short list of integration priorities. We'll respond with a scoped proposal and timeline.

Open Contact Page

📱 Original App — One (OnePay) — Full Description (collapsed)

App name / package: One / com.onefinance.one

One (OnePay) is a financial fintech app that provides multi-feature digital wallet services: savings, cash accounts, digital debit/virtual cards, rewards, investment products, and consumer lending. The platform typically offers features including high-yield savings, daily interest crediting, budgeting tools, global remittance, debit & virtual cards, integrated payments (QR, card, bank transfer), Buy-Now-Pay-Later or short-term cash advances, and partner investment products.

GOfinance-style hub: savings (GO+), invest, insurance, CashLoan-like products
Daily/instant interest products and multi-currency pockets
In-app bill payments, top-ups, QR pay, and merchant acceptance
Regulated features depend on local banking partners and licences

Disclaimer: This page is a technical integration advert using the app description provided by the requester. All work is performed with attention to legal and privacy requirements; we only work with customer authorization, public APIs, or approved test credentials.