Overseas App API Integration & Interface Services

Who We Are

We are a technology service studio specializing in App interface integration and authorized API connections, with many years of hands-on experience in mobile finance and payments products. We provide a one-stop service for global clients including protocol analysis, interface refactoring, Open Data integration, third-party API integration, automation script development, and API documentation delivery.

Compliance & Authorization: All projects are conducted based on client authorization or public APIs (Open Data / Authorized APIs). If needed, we can provide reverse engineering support within legal bounds to achieve compatibility, while strictly adhering to local laws and privacy protections.

Our Core Capabilities

Authentication and session management for multinational banking and financial apps (OAuth2, JWT, two-factor authentication)
Transaction and account data extraction, standardized responses, and pagination handling
Payments, mortgage status querying, portfolio statistics, and policy/claims interfaces integration
Android/iOS platform request replay protection, certificate/public key verification, HTTPS/TLS hardening and certificate pinning solutions
Deliver OpenAPI/Swagger docs, Postman collections, sample code (Node.js/Python/Java) and automated test scripts
Data protection and security: TLS, key management, least privilege and audit log recommendations

Implementation recommendations for the target apps

Below are typical interface implementation points and deliverables for each target app, customizable per authorization and platform protocol.

GoTyme Bank: Implement account registration/login adaptation, balance and transaction history with pagination, real-time transfers and beneficiary management interfaces; provide OAuth2 authorization flow and session renewal strategy; deliver Postman collection and sample SDK.
USA Mortgage: Mortgage application scenarios: loan application status queries, repayment plans and due reminder APIs, interest rate and repayment simulator APIs; build data synchronization tasks and secure file upload (loan documents, signing documents) interfaces.
ProCredit m-banking Moldova: For international small banks mobile implementation: account summary, cross-border/local transfers (fee calculation), bill payments and push notifications; provide multi-language documentation and local regulatory compliance guidance (e.g., KYC/ AML integration).
SC Mobile Hong Kong: Localized authentication (including Hong Kong bank-grade MFA), export/import of deposits/withdrawals records (CSV/PDF), credit card statements and installment queries; support HK FPS / local payment gateway integration.
Vanguard | ETFs and super: Holdings and portfolio valuation interfaces, ETF constituents/historical NAV retrieval, pre-validation of buy/sell orders (fund availability, trading windows) and order status callback mechanism; deliver data caching and rate-limiting documentation.
Tata AIA Life Secure Life[air.TataAIA.MasterApp.SecureLife]： Insurance app interfaces: policy lookup, premium calculation and payments, claims submission upload and progress tracking, notifications and e-signature integration; provide integration with third-party payment gateways, secure file storage and event logs.

Best practices & Compliance

When integrating with any third-party or performing reverse-engineering analysis, only do so with client authorization or for public APIs; avoid unauthorized data scraping; if protocol refactoring is needed, use auditable methods and retain operation logs.
Use OAuth2 + PKCE, short-lived access tokens with refresh, and TLS 1.2/1.3 to ensure transport security.
Provide compliance templates for lending and insurance businesses to help clients meet local disclosure, collection, and interest-rate reporting requirements.

FAQ

What information should be provided to start?

Please provide the target App name(s) and specific requirements (e.g., account queries, payment integration, or lending flows), along with authorization scope or public API documentation if available.

What is the typical delivery timeline?

Depends on complexity and authorization. Standard integrations (auth, account, basic transactions) typically 5-10 working days; complex scenarios (payments gateway, document signing, cross-border compliance) usually 2-4 weeks.

How do you ensure compliance and data security?

We only work based on client authorization or public APIs; we support NDA signing; deliver code following the principle of least privilege and offer encryption and auditing guidance.