Courier API Integration
Ship, track and reconcile COD without opening five dashboards.
We integrate courier aggregators and carriers such as Shiprocket and Delhivery with your store, ERP or WMS: rate and serviceability checks, AWB and label generation, tracking, NDR handling and COD remittance reconciliation.
- AWB and labels
- Tracking and NDR
- COD reconciliation
Free 30-minute call with a senior specialist. Reply within one business day. Based in Jaipur, working with businesses across India.
- Discovery callFree 30 minutes with a senior specialist
- Scoped first phaseWritten scope, timeline and fixed price
- Build with weekly demosWorking software you can see every week
- Launch and supportGo-live with your team ready, then ongoing support
What is courier API integration?
Courier API integration connects your store, ERP or warehouse system to carriers or aggregators so shipments are created, labelled, tracked and reconciled automatically. Stack18 builds it for Indian ecommerce and distributors with rate checks, NDR handling and COD remittance matching.
Last reviewed 30 October 2026 by the Stack18 delivery team in Jaipur. Security and AI governance · Pricing · About Stack18
| What it covers | Shipment creation; Tracking and customer updates; NDR and RTO handling; COD reconciliation; Multi-carrier control. |
|---|---|
| Typical first step | Discovery Sprint: 2 weeks, fixed price. |
| Build route | Fixed-scope first release: agreed in discovery; fixed price after discovery. |
| Long-term option | Transformation Pod: 12–36 months, annual contract. |
| Measured by | Order-to-ship time; RTO rate; NDR resolution time; COD reconciliation time. Each against an agreed baseline. |
| Governance | Human approval at 5 governance gates before anything reaches production. NDA available on request. |
| Delivery team | Based in Jaipur, India. A senior specialist replies within one business day. |
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Courier API Integration, end to end.
Each capability is delivered by the same team on the Agentic SDLC, with your approval at every critical step.
Shipment creation
Orders become shipments automatically.
- Serviceability and rate check
- AWB and label generation
- Courier selection rules
Tracking and customer updates
Status flows back to everyone.
- Status sync to store and ERP
- WhatsApp and SMS updates
- Delay alerts
NDR and RTO handling
Act before the parcel returns.
- NDR queue with actions
- Customer reattempt requests
- RTO reason reporting
COD reconciliation
Match remittances to orders.
- Remittance file matching
- Short and excess lists
- Courier-wise ageing
Multi-carrier control
Compare and switch carriers.
- Rate cards and rules
- Courier performance report
- Fallback carriers
A typical engagement, step by step.
Senior people lead every phase. Specialised AI agents on the Agentic SDLC handle the repetitive work, and nothing ships without your approval.
Discovery
Map how shipping integration works today, the systems and data involved, and agree the first measurable outcome.
Design
Design the workflows, roles, integrations and approval points for shipping integration.
Build in weekly demos
Your team sees working shipping integration software every week, with changes agreed in the open.
Launch and support
Data migration, training, go-live support and a measured 30-day review against the baseline.
Start small. Scale when it works.
Every engagement begins with a short, fixed-price step so you can judge the fit before committing further. See pricing.
Discovery Sprint
Teams deciding scope and priorities before they commit.
- Duration
- 2 weeks
- Pricing
- Fixed price
- Scoped plan and timeline
- Team and fixed price
- Process map or prototype
Fixed-scope first release
Teams that know what they need built.
- Duration
- Agreed in discovery
- Pricing
- Fixed price after discovery
- Written scope and acceptance criteria
- Weekly demos
- Handover with documentation
Transformation Pod
Multi-system programmes that run for years.
- Duration
- 12–36 months
- Pricing
- Annual contract
- Dedicated cross-functional team
- Quarterly business reviews
- One accountable partner
What we have shipped, and what a typical engagement looks like.
Delivered projects link to the full case study. Illustrative scenarios describe typical engagements and are not named client results.
D2C brand with COD orders
- Challenge
- Orders keyed into courier dashboards; COD remittances matched by hand.
- What we do
- Automated shipment creation, NDR queue and COD matching.
Scoped in a 2-week sprint
Free shipping integration review
Tell us where shipping integration hurts most. We map what to fix first, whether ready-made or custom fits, and a realistic first step.
- Where to start and why
- Ready-made vs custom view
- Indicative timeline
We agree targets before we start.
Every engagement has a baseline and a target on the measures that matter to you, reported at every read-out.
Courier API Integration questions.
Which couriers can you integrate?
Common aggregators and carriers that offer APIs, including Shiprocket and Delhivery. We confirm your carriers in discovery.
Can it reduce RTO?
It helps by surfacing NDR early and enabling reattempts and address confirmation, but results depend on your product and customers.
Does it reconcile COD automatically?
Yes. Remittance reports are matched to orders and exceptions are listed for review.
Can it work with our ERP or WMS?
Yes. We post shipment details back to your ERP or warehouse system.
How long does it take?
Scope and timeline are agreed in a two-week Discovery Sprint.
Guides, comparisons and proof.
Software Development Cost in India: What Drives It
What drives custom software cost in India, how fixed price, time and materials and dedicated teams differ, and…
Read →CompareReady-Made vs Custom Software: How to Choose
Ready-made systems go live in weeks at a fixed price.
Read →IndustryLogistics & Supply Chain Software in India
Dispatch, warehouse, driver apps and shipment tracking for logistics providers, 3PLs and transporters.
Read →Case studyCase Study: Ethnic Wear D2C Website, App & ERP
How Stack18 built the website, mobile app and ERP for a ₹100+ crore ethnic wear D2C brand in Jaipur, with a…
Read →Let's scope your Courier API Integration project.
Tell us where you are and where you want to be. A senior specialist will reply within one business day with next steps.
- Free 30-minute consultation
- Indicative estimate after the call
- NDA available on request