App Interface Integration & API Integration Services — Banking, Mortgage, Investment & Insurance Apps

Who We Are

We are a technical services studio focused on App interface integration and authorized API integration, with years of experience in mobile finance and payments. We offer one-stop services spanning protocol analysis, API refactoring, Open Data integration, third-party API connections, automation script development, and delivery of API documentation.

Compliance & Authorization: All projects are conducted only with client authorization or based on publicly available/authorized APIs. When necessary, we can provide reverse engineering support under lawful conditions to achieve compatibility, while strictly adhering to local laws and privacy protections.

Core Capabilities

Account & Identity: OAuth2, JWT, two-factor, multi-signature and biometric access solutions.
Payments & Wallets: QR/Code payments, QR/Barcode, NFC, interbank transfers and settlement integrations.
Transactions & Billing: Standardized transaction details, reconciliation streams, invoice generation and notification callbacks.
Security & Compliance: HTTPS/TLS, data masking, rate limiting and audit log support.
Delivery Artifacts: OpenAPI/Swagger docs, Postman collections, sample code (Node.js/Python/Java) and automated test scripts.

Functional Implementation Examples for Target Apps

Based on the target apps you provide, we tailor actionable API implementation plans and deliver sample code and documentation for each app. Below are the key implementation points for the current target list:

First Security Mobile: Enterprise/retail banking client interfaces, including multi-factor login, account and sub-account balance queries, date-grouped transaction details API, custody/term product queries, real-time transaction notifications (webhook), and reconciliation CSV export. Deliver mobile SDK packaging and backend microservice samples.
王道e動網 (Wangdao E-Dong Net): Digital banking access solution for the Taiwan market, including OAuth2 authorization flow, current/deposit balances, interbank transfers (with external bank integration), electronic statements download, and integration with local payment gateways (electronic/payment barcode).
Convdesc: Interfaces for transaction descriptions and budgeting aggregation; supports transaction note parsing, merchant category mapping (MCC), classification rules engine, and a transformation service that outputs standardized descriptions for budgeting or accounting systems.
MOVii [com.movilred.subscriber]: Digital wallet and prepaid card scenario, including user registration & KYC, wallet balance and top-up, P2P transfers, QR code payments and transaction callback management. We also provide sandbox and replay tools for QA validation.
BinDowal Pay: Merchant acquiring and consumer wallet integration: acquiring API (payment requests, refunds, settlements), risk rules embedding, POS and mobile QR payments integration references, with examples for connecting to third-party clearing platforms.
Budgetiz: Backend for personal/enterprise budgeting and expense management: account aggregation (multi-bank/multi-wallet sync), automated categorization and budgeting rules engine, periodic reporting API, and export to accounting tools with Webhook push support.

Typical Deliverables

Runnable API sample code (Node.js / Python / Java), with authentication middleware and error handling.
OpenAPI/Swagger specifications and Postman test collection.
API authentication and rate-limiting strategy documents (examples: OAuth2, API Keys, IP allowlists, rate limit rules).
Security & compliance brief (data masking, log retention policies, NDA templates optional).
Automation test scripts and end-to-end test plans, including sandbox data and replay scripts.

Project Process & Timeline

Requirements confirmation: client provides target App name and API needs.
Protocol analysis: authorization API / Open Data mapping, necessary reverse engineering within authorized scope.
Development & delivery: implement authentication, core APIs, test scripts, and documentation.
Validation & deployment: assist integration testing, performance tuning, and production release support.

Typical projects deliver the first version in 5-10 business days; complex interbank/settlement integrations may take longer depending on requirements.

Pricing & Assurance

Starting price: $300 (includes requirements confirmation and quick prototype); sample-first payment-on-delivery option available.
Work is performed only on client-authorized data and public/authorized interfaces; NDA can be signed.

FAQ

1) What information do we need from the client?

Target App name, authorization credentials/testing accounts (if any), desired interface features and compliance requirements.

2) Can the delivered interfaces be used directly on mobile?

Yes. We provide runnable samples, SDK-level packaging recommendations, and integration documentation for mobile integration.

3) How is data security ensured?

We use industry-standard encryption and authentication, provide least-privilege configurations and audit log recommendations, and can support code audits and penetration testing (quoted separately).

Contact Us

To submit a target App name and integration needs, or to request a customized方案, please visit the contact page below:

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