About Us
We are a technical services team specializing in App interface integration and authorized API integration, proficient in protocol analysis for Android and iOS, API refactoring, Open Data integration, and coordinating with third-party interfaces. We provide end-to-end delivery for Android and iOS access and documentation.
Compliance Commitment: All work is conducted only within client authorization or within the scope of public/authorized APIs. We adhere to privacy and compliance requirements and can sign NDAs as needed.
Our Advantages
- Standardized API implementations and runnable source code delivery for Android and iOS platforms
- Compliance-first: GDPR / PSD2 / PCI-DSS (as required) and regional regulatory requirements
- Authentication & security integration: OAuth2, OpenID Connect, SCA, HTTPS/TLS, certificate validation
- Deliverables include OpenAPI/Swagger, Postman collections, and runnable server examples (Node.js / Python / Java)
- Custom scripts for various scenarios: data extraction via public interfaces, protocol parsing and interface simulation
Target Apps & Example Features
The following are design recommendations and delivery highlights for each target app you provided. Each implementation can be extended into runnable API source code and complete documentation.
- Square Invoices Beta: Invoice creation, sending, and lifecycle management API; supports invoice templates, tax rates, and installment billing; provides webhooks (payment confirmation, invoice due) and PDF export endpoints; idempotent operations and state synchronization.
- Present Value Calculator: Financial calculator API offering present value, future value, IRR, discount rate, and installment calculations; supports multi-currency and precision settings; returns amortization schedules, sensitivity analysis data, and input validation rules.
- RechDot – Recharge & Cashback: Recharge integration API for mobile top-ups with carrier routing and balance validation; cashback rules engine, cashback accounting interface, and asynchronous notifications; provides recharge status queries and idempotent protection.
- HAS YILDIZ SARRAFİYE: POS and inventory interfaces for retail/jewelry merchants, including product barcodes, weight-based pricing, gold price updates, sales invoices and returns; supports member points, discount codes, and multi-channel order synchronization.
- Smart book Долги под контролем: Personal debt management synchronization API, providing loan records import/export, reminder planning, repayment schedule generation, and multi-party reconciliation; implements local encrypted storage and cloud sync (with user authorization).
- Halifax Mobile Banking: Bank-grade account API examples, including account list, balances and transaction details, domestic/international transfers, scheduled payments and bill payments; supports Open Banking standards, Strong Customer Authentication (SCA), and secure session management strategy.
Deliverables (Samples)
- Runnable backend sample code (Node.js / Python / Java) with deployment instructions
- OpenAPI/Swagger documentation and Postman request collections, including headers and authentication examples
- API authentication & security design documents (OAuth2 / JWT / mTLS, etc.)
- Automated tests and integration testing plans, covering common error scenarios
- Operations guidance and quick reference manuals (logging, monitoring, rate limiting, and idempotency strategies)
Compliance & Security
We prioritize compliant methods: connections are made only with client authorization or public data sources (Open Data / Authorized APIs). For banking scenarios, we follow PSD2 / Open Banking and local regulatory requirements; PCI-DSS integration can be implemented as needed for payments and card data processing.
Pricing & Delivery Timeline
- Starting price of $300, with flexible terms to deliver samples first and payment upon satisfaction
- Standard tasks (single API / documentation) typically deliver in 3-7 business days; complex systems (multi-API integration, compliance audits) depend on scope
- NDA can be signed and phased acceptance provided
FAQ
1. What information should clients prepare?
Please provide the target App name, authorization credentials or API documentation (if available), specific business scenarios, and desired delivery format (sample code / Swagger).
2. Is Open Banking / PSD2 integration supported?
Yes. We are familiar with Open Banking processes, OAuth2 authorization code flow, SCA requirements, and certificate infrastructure. We can coordinate with banks or third parties for compliant integration.
3. Do you provide maintenance after delivery?
Yes, maintenance and upgrades can be provided as needed, including interface changes, bug fixes, and performance optimization.
Contact Us
To submit target App names and detailed requirements, or to request a quote and implementation plan, please click the button below to view contact information.