What is Retail & E-commerce API & Payment Gateway Integration?
Sabka Saathi builds an integration for retail and e-commerce businesses in India. Connecting your system to the payment gateways, logistics partners, government portals and third-party tools it needs to talk to. For retail and e-commerce businesses specifically, that means one stock figure shared by store, website and marketplace, your own storefront where the margin stays with you, and order and returns handling through to delivery. Typical delivery is 2–6 weeks at ₹15,000 – ₹1,20,000+, built on Node.js, TypeScript, PostgreSQL, and delivered remotely to store owners and online sellers anywhere in India.
Key points
- Built specifically for retail and e-commerce businesses, not adapted from a generic template
- Razorpay, PayU, Cashfree, Stripe and UPI integration
- Webhook handling that survives retries and duplicate events
- Delivered in 2–6 weeks, remotely, anywhere in India
- Source code, documentation and team training handed over at the end
At a glance
- Industry
- E-commerce & Retail
- Service
- API & Payment Gateway Integration
- Primary stack
- Node.js, TypeScript, PostgreSQL
- Typical timeline
- 2–6 weeks
- Indicative price
- ₹15,000 – ₹1,20,000+
- Delivery model
- Remote & hybrid, pan-India
Mobile App UI Screens & Interfaces
Preview high-performance mobile application interfaces built for businesses in India. Select an app category below to explore live screen mockups.
Why retail & e-commerce projects are different
API & Payment Gateway Integration for retail and e-commerce businesses is not the same project as it is for any other sector. In e-commerce & retail, you sell across a shop counter, a marketplace listing and a WhatsApp catalogue at the same time, and stock has to be right in all three. That single fact changes what the software has to get right — and it is the thing generic, off-the-shelf products are least willing to accommodate. We build an integration around it instead.
Most retail and e-commerce businesses do not fail to adopt software because they dislike technology. They fail because the product on offer was designed for a different business and asks them to change their process to suit it. We start from your process. Store owners and online sellers tell us how the work happens today — including the parts that only exist in someone's head — and the integration is shaped to that. Data stops being re-typed between systems, and money stops being reconciled by hand.
What retail & e-commerce teams actually struggle with
Marketplace commissions eat the margin you priced for
Razorpay, PayU, Cashfree, Stripe and UPI integration — built into the integration rather than bolted on afterwards.
Online and offline stock disagree, so orders get cancelled
Webhook handling that survives retries and duplicate events — built into the integration rather than bolted on afterwards.
Customer data lives with the marketplace, not with you
Settlement and refund reconciliation against your own records — built into the integration rather than bolted on afterwards.
Included in every api & payment gateway integration project
- Razorpay, PayU, Cashfree, Stripe and UPI integration
- Webhook handling that survives retries and duplicate events
- Settlement and refund reconciliation against your own records
- Logistics, SMS, WhatsApp and GST portal integrations
- API documentation and a sandbox for your own team
Shaped around your operation
- One stock figure shared by store, website and marketplace
- Your own storefront where the margin stays with you
- Order and returns handling through to delivery
- Repeat-purchase campaigns to customers you own
Technology we build it on
From first call to handover
We start with a discovery call to map how your e-commerce & retail operation runs today. You then see a clickable prototype before development is committed, so the shape of the thing is agreed while changing it is still cheap. Development runs in weekly builds you can open and use — not a black box that reappears at the end. Delivery takes 2–6 weeks for a typical retail & e-commerce project, and we hand over source code, documentation and training.
Discovery
We map how the work happens today.
Prototype
You approve the shape before we build it.
Build
Weekly builds you can open and use.
Handover
Training, source code and documentation.
Retail & E-commerce API & Payment Gateway Integration FAQs
How much does Retail & E-commerce API & Payment Gateway Integration cost in India?
Retail & E-commerce API & Payment Gateway Integration from Sabka Saathi typically costs ₹15,000 – ₹1,20,000+, depending on scope. A focused build covering razorpay, PayU, Cashfree, Stripe and UPI integration sits at the lower end; a full system including logistics, SMS, WhatsApp and GST portal integrations sits at the upper end. We quote a fixed price against an agreed scope after a free discovery call, so there is no hourly billing surprise.
How long does it take to build an integration for retail and e-commerce businesses?
A typical retail & e-commerce integration project takes 2–6 weeks from discovery to launch. You see a working prototype in the first two weeks and weekly builds after that, so progress is visible throughout rather than only at the end.
Why do retail and e-commerce businesses need an integration specifically?
Because you sell across a shop counter, a marketplace listing and a WhatsApp catalogue at the same time, and stock has to be right in all three. The direct consequence is one most retail and e-commerce businesses will recognise: marketplace commissions eat the margin you priced for. A generic product does not solve that — it needs one stock figure shared by store, website and marketplace. Data stops being re-typed between systems, and money stops being reconciled by hand.
What technology is used to build it?
We build on Node.js, TypeScript, PostgreSQL, Redis, Razorpay, Stripe. These are mainstream, well-documented technologies chosen deliberately so that any competent developer can maintain the system later — you are not locked into us. Source code and documentation are handed over at project close.
Do you work with retail and e-commerce businesses outside major cities?
Yes. Delivery is remote — discovery calls, design reviews and weekly builds all happen online — so we work with retail and e-commerce businesses across 258+ cities in 36 states, including district towns and smaller centres, on the same terms as metro clients.
Can it integrate with the software we already use?
Usually yes. We integrate with GST billing tools, Tally exports, payment gateways, WhatsApp Business API, logistics partners and most systems that expose an API or a file export. Where a system does not, we plan a migration path rather than forcing you to run both in parallel indefinitely.
API & Payment Gateway Integration in your city
Delivery is remote, so location is never a constraint. These are the cities with a dedicated page covering local context, pricing and process.
Other services for e-commerce & retail
- Retail & E-commerce App Development
- Retail & E-commerce Website Development
- Retail & E-commerce Software Development
- Retail & E-commerce Custom Software Development
- Retail & E-commerce ERP Development
- Retail & E-commerce CRM Development
- Retail & E-commerce Billing Software Development
- Retail & E-commerce Management Software Development
- Retail & E-commerce POS Software Development
- Retail & E-commerce Inventory Management Software Development
- Retail & E-commerce Accounting Software Development
- Retail & E-commerce HRMS & Payroll Software Development
API & Payment Gateway Integration for related industries
- Startup API & Payment Gateway Integration
- Local Shop API & Payment Gateway Integration
- Wholesale API & Payment Gateway Integration
- Hardware Shop API & Payment Gateway Integration
- Fashion & Clothing API & Payment Gateway Integration
- Franchise API & Payment Gateway Integration
Talk to us about your retail & e-commerce project
A free discovery call, a fixed quote against an agreed scope, and a prototype before you commit to the build. Typical delivery 2–6 weeks.