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Ecommerce Development

ONDC Seller Integration Services in India

Reach buyers across the Open Network for Digital Commerce, with your catalogue, stock and orders connected to the systems you already use.

ONDC Integration

What is ONDC Integration?

The Open Network for Digital Commerce (ONDC) is a Government of India initiative that creates an open network for buying and selling online. Instead of every seller having to be listed on one large platform to reach customers, ONDC lets buyers using one app discover and buy from sellers listed through other apps on the network. It is built on open specifications based on the Beckn protocol, so different platforms can talk to each other in a standard way.

For sellers, ONDC is a way to reach more buyers without depending entirely on a single marketplace. For businesses such as retailers, restaurants, D2C brands, distributors and technology platforms, it can open a new channel. But joining ONDC is not simply a matter of uploading products. Sellers participate through a seller network participant, sometimes called a seller app. Catalogues must follow network standards, orders and cancellations follow a defined lifecycle, and fulfilment, grievances and settlements have their own rules.

Our ONDC seller integration services help you decide how to participate and then make it work in practice. For most businesses, that means joining through an existing seller app and integrating your catalogue, stock and orders with your store, POS or ERP. For platforms that want to become seller-side participants themselves, we plan and build the technical integration with the network’s specifications. In both cases, we focus on accurate catalogues, reliable order handling and realistic expectations.

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Tools & technologies

  • ONDC specifications (Beckn protocol)
  • Node.js
  • REST APIs
  • Shopify
  • WooCommerce
  • POS and ERP connectors
  • PostgreSQL
  • AWS
Deliverables

What do you get?

Everything included in our ondc integration engagements, agreed in writing before work starts.
  • ONDC readiness assessment: categories, fulfilment model, systems and goals
  • Participation route: join via a seller app or build a seller-side integration
  • Seller app comparison and onboarding support, where you join through a partner
  • Catalogue preparation to network standards: attributes, images, prices and availability
  • Catalogue, stock and price sync with your store, POS, ERP or inventory system
  • Order integration: acceptance, status updates, cancellations and returns
  • Logistics setup using your own delivery or network logistics providers
  • Grievance handling process aligned with network requirements
  • Settlement and reconciliation reports for ONDC orders
  • Performance review after launch, with catalogue and pricing improvements
Capabilities

ONDC Integration capabilities.

ONDC catalogue integration

Products are prepared with the attributes, images, descriptions, prices and availability the network expects for your category, so buyers find accurate listings on any buyer app.

Inventory and price sync

Stock and prices update automatically from your store, POS or ERP, so ONDC listings never show products you cannot supply or prices that are out of date.

Order and fulfilment integration

ONDC orders flow into the same order management process as your other channels, with status updates, cancellations and returns handled within the network’s timelines.

Seller app selection and onboarding

We compare seller network participants on categories, fees, integrations and support, and help you complete onboarding with the right information ready.

Seller-side platform integration

For platforms that want to become seller network participants, we plan and build integration with ONDC’s open specifications, including the order lifecycle, issue handling and settlement flows.

Logistics options

Fulfil orders with your own delivery staff or use logistics providers available on the network, depending on your category, area and service levels.

Reconciliation and reporting

Reports that match ONDC orders with settlements, fees and returns help your finance team see the channel’s real profitability.

How we work

Our ONDC Integration process.

Typical stages and durations. Exact timelines depend on scope and are confirmed in your proposal.
  1. 01

    Readiness assessment

    Typically 1 week

    Categories, service areas, fulfilment, systems and goals reviewed; participation route recommended.

  2. 02

    Seller app & onboarding

    Depends on the partner

    Seller network participant chosen and onboarding completed, or seller-side integration scoped.

  3. 03

    Catalogue preparation

    Typically 1–3 weeks

    Products mapped and enriched to network standards, with images and attributes checked.

  4. 04

    System integration

    Typically 2–6 weeks

    Catalogue, stock, price and order sync built and tested with your systems.

  5. 05

    Go-live & monitoring

    Launch and ongoing

    Launch on the network, monitor orders, cancellations and grievances, and fix issues.

Guide

What should you know about ONDC Integration?

What is ONDC in simple terms?

Today, if you want to buy from a seller on a particular ecommerce app, that seller must be listed on that same app. ONDC changes this by creating a shared network. Buyer apps and seller apps connect to the network using common rules, so a buyer using one app can discover and order from a seller listed through a different app.

The idea is similar to how UPI lets you pay anyone regardless of which bank or payment app they use. ONDC is not itself a shopping app; it is the network and set of standards that apps plug into.

Who should consider selling on ONDC?

ONDC can be worth exploring for businesses that want another channel beyond their own website and large marketplaces.

  • Local retailers and kirana stores wanting online visibility in their area.
  • Restaurants and food businesses looking for alternatives to a single delivery platform.
  • D2C brands wanting additional discovery channels.
  • Distributors and manufacturers exploring new routes to market.
  • Technology platforms serving sellers that want to offer ONDC access to their users.

How do sellers join ONDC?

Most sellers do not connect to ONDC directly. They join through a seller network participant, a platform already integrated with the network that manages listings, orders and communication on the seller’s behalf. This is usually the fastest and most practical route for individual businesses.

Businesses that run their own commerce platform, or technology companies serving many sellers, can choose to become a seller-side network participant themselves. That requires building integration with ONDC’s specifications, meeting the network’s participation requirements and completing its onboarding and testing processes. It offers more control but involves significantly more effort and responsibility.

How do you choose a seller app?

Seller network participants differ in the categories and areas they support, their fees, how they handle logistics and payments, their integrations with stores and ERPs, and the quality of their support. We compare the options against your needs and current terms, then help you complete onboarding with your catalogue, business details and bank information ready.

Why does catalogue quality matter so much on ONDC?

On an open network, your products appear inside apps you do not control, alongside other sellers. Buyers compare listings quickly, and incomplete or inaccurate listings are skipped. Network standards also define which attributes each category needs, so missing information can stop products appearing in searches or filters.

We prepare products with clear names, accurate attributes, good images, correct prices and availability, and category-specific details such as sizes, ingredients or specifications. Clean catalogue data also improves your performance on your own website and other marketplaces.

How are ONDC orders fulfilled?

Sellers can deliver orders themselves or use logistics providers that participate in the network, depending on the category and area. Whatever the model, the seller must meet the delivery promise shown to the buyer and update order status as it moves from acceptance to dispatch and delivery.

We integrate ONDC orders into your existing order handling, so staff do not manage a separate process, and set up notifications and status updates that keep buyers informed within the network’s expectations.

What about returns, cancellations and grievances?

ONDC defines processes for cancellations, returns and issue handling that participants must follow, including timelines for responding to buyer grievances. Sellers need clear policies, and the systems must record and respond to issues raised through any buyer app on the network.

We map these processes to your operations, set up alerts for new issues and make sure your team knows how to resolve them in time, because unresolved issues affect buyer trust and seller standing.

How do fees and settlements work on ONDC?

Fees on ONDC can include charges from your seller app and a buyer finder fee paid to the buyer app that brought the order, along with payment and logistics costs. The exact amounts depend on the participants involved and change over time, so they must be checked with your seller app before you set prices.

Settlement follows the network’s processes and your seller app’s arrangements. We build reconciliation reports that match orders, fees, returns and settlements, so you can see whether the channel is profitable at your prices.

How does ONDC connect with your existing store and systems?

Selling on ONDC works best when it is another channel of your existing operation, not a separate business. Catalogue, stock and prices should come from the same source as your website, POS or ERP, and orders should flow into the same fulfilment process.

We build or configure these integrations through your seller app’s APIs, your store platform and your inventory systems, so stock stays accurate across ONDC, your custom ecommerce website and other marketplaces.

Should marketplaces and platforms join ONDC?

Marketplaces and software platforms serving many sellers can use ONDC to offer those sellers wider reach, or to source more products for their own buyers. Becoming a network participant is a strategic and technical decision that affects operations, compliance and support. Our marketplace development team can help evaluate and implement it as part of your platform roadmap.

What should you expect from ONDC as a channel?

ONDC is still evolving, and results vary by category, city and seller app. Some categories and areas see steady buyer activity; others are still developing. It is sensible to treat ONDC as an additional channel to test and grow, not a replacement for your website or established marketplaces.

Start with products and areas where you can deliver reliably, measure orders, cancellations and profitability, and expand based on real data.

Which ONDC mistakes should sellers avoid?

Common problems early on are easy to prevent.

  • Listing products with incomplete attributes or poor images.
  • Stock not synced, leading to cancellations that damage standing.
  • Ignoring grievances or responding late.
  • Setting prices without accounting for all fees and logistics costs.
  • Running ONDC orders through a separate manual process.
  • Promising delivery areas or times you cannot meet.

What should you prepare before joining ONDC?

Keep your business registration, GST details, bank account and FSSAI licence, where relevant for food, ready for seller app onboarding. Prepare a product list with names, attributes, prices, stock and good images, and decide the areas you can serve and your delivery promises. Clear return, cancellation and support policies, plus a named person to handle ONDC orders and grievances, make the first weeks much smoother.

What drives the cost of ONDC integration?

The main factors are the participation route, the number of products and categories, the state of your catalogue data, integration with your store, POS or ERP, fulfilment and logistics setup, reporting needs and, for seller-side participants, the scope of building and certifying the network integration. We confirm each of these in the readiness assessment.

Pricing & engagement

How do pricing and engagement work?

ONDC work is quoted after a short readiness assessment, because effort depends on your participation route, category, catalogue size and systems. Seller app fees and any network-related charges are agreed directly with the relevant participants.

FAQS

ONDC Integration FAQs

ONDC, the Open Network for Digital Commerce, is a Government of India initiative that lets buyers on one app discover and buy from sellers listed through other apps, using open, shared standards.

Most businesses join through a seller network participant, or seller app, which connects them to the network. Platforms can also become seller-side participants through their own technical integration.

No. You can join through a seller app without your own website. If you have a website or store, integrating it keeps catalogue and stock consistent across channels.

Costs can include seller app fees, a buyer finder fee for the buyer app, payment and logistics charges. Amounts vary by participant and category, so confirm them before pricing.

Yes. We integrate catalogue, stock, prices and orders with your store, POS or ERP through your seller app’s APIs and your systems.

ONDC supports several retail categories, such as grocery, food, fashion, electronics, home and beauty, and categories continue to expand. We confirm current availability for your products.

Sellers can deliver themselves or use logistics providers available on the network, depending on category, area and the seller app’s capabilities.

Joining through a seller app with catalogue sync can take a few weeks. Building a seller-side network integration takes considerably longer, including network testing.

READY TO COLLABORATE

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