REST · Webhooks · Payments

Custom API & Marketplace Integrations

We connect payment gateways, logistics carriers, digital cash registers, and external SaaS platforms via robust official APIs and webhooks without losing data.

RESTWebhooksPaymentsDelivery: from 3–5 days
Capabilities

Popular Integration Scenarios

01

Payment Systems & Digital Cash Registers

Monobank Acquiring, LiqPay, WayForPay, NovaPay, and software cash registers (Checkbox, Vchasno).

02

Logistics & Delivery Carriers

Nova Poshta API (instant TTN generation, tracking, automated cost calculation), Ukrposhta, and courier dispatching.

03

Marketplaces & E-Commerce

Rozetka Marketplace, Prom.ua, OLX, Horoshop, OpenCart, and Shopify.

04

Messaging & SMS Gateways

TurboSMS, AlphaSMS, Viber Business, Instagram Graph API, and WhatsApp Business API.

Turnkey Scope

What Is Included

API Documentation & Limit Review

We analyze rate limits, auth protocols, and response payloads to ensure high availability.

Resilient Middleware Connectors

Serverless microservices that validate, transform, and route data securely between platforms.

Real-Time Webhook Handlers

Instant responses to delivery status updates, successful customer payments, and incoming messages.

Logging & Observability

Encrypted transaction logging so no customer transaction or order detail ever gets lost.

Timelines & Transparent Pricing

How long does delivery take and what is the cost?

Connecting a third-party service (e.g. Monobank payments or Nova Poshta auto-shipping) takes 3 to 5 business days.

Fixed Quote in SOWPrice and scope are locked before kickoff. Zero hidden surcharges during execution.
Code & Data Belong to YouFull documentation, source repository, and cloud hosting accounts are transferred 100% to your company.
Q&A

Frequently Asked Questions

Is it secure to process financial data through custom API connectors?

Completely. All requests are encrypted via modern TLS/SSL, credit card credentials are handled exclusively on the banking provider's certified PCI-DSS servers, and API keys are stored in secure environment vaults.

Do you support sync with Rozetka Dropship and Prom.ua?

Yes. We set up two-way integration: incoming orders import into CRM automatically, stock numbers stay in sync, and shipping labels generate instantly.

Flowly Ecosystem

Other Studio Services

All 9 services
Have an idea or project?

Let's Discuss It

Describe your project requirements, and we will get back to you with an execution plan, timeline, and pricing within 15 minutes.

We reply within 15 minutes on Telegram.
Or message founders directly:@flowly_digital