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SOLVENEST TECHNOLOGIES | Custom Software, ERP & CRM Development Company

Service

API Development & Integration

Make the systems you already run talk to each other

Overview

What this service covers and who it is for

Most businesses do not need another system. They need the four they already run to stop being islands. Orders on the website, stock in the ERP, invoices in Tally and conversations on WhatsApp — each holding a piece of the truth, reconciled by a person with a spreadsheet.

We build the connections between them: documented, monitored APIs that move data reliably and tell you when something goes wrong instead of failing quietly.

What we integrate

Payment gateways (Razorpay, PayU, CCAvenue, Stripe, PayPal), WhatsApp Business API, SMS gateways on DLT-compliant Indian providers, transactional email, Tally and other accounting software, courier and logistics tracking, GST and e-way bill services, and marketplace APIs.

Built to fail safely

Third-party services go down. Integrations we build retry with backoff, queue what cannot be delivered, and alert a human when intervention is genuinely needed — so a gateway outage does not silently lose you a day of orders.

  • Retry and queue handling for outages
  • Alerting when something genuinely breaks
  • Full API documentation handed over
  • Sandbox testing before anything goes live

What's Included

Payment Gateways

Razorpay, PayU, CCAvenue, Stripe and PayPal with proper webhook handling and reconciliation.

WhatsApp Business API

Template-approved transactional messages for orders, dispatch and payment reminders.

Accounting Sync

Push invoices and vouchers into Tally or your accounting package without re-entry.

Logistics & Tracking

Courier APIs for AWB generation, live tracking and automatic delivery status updates.

Custom REST APIs

Documented, versioned and authenticated APIs so partners and apps can connect safely.

Monitoring & Alerts

Failure alerts and retry logic, so a broken integration is noticed within minutes.

Business Impact

Data entered once

The same order stops being typed into three systems by three different people.

Faster payment collection

Automated reminders and online payment links measurably shorten the receivables cycle.

Fewer status calls

Customers receive updates automatically instead of calling to ask.

Reconciliation that adds up

Gateway settlements matched against orders automatically rather than line by line.

How We Deliver It

  1. 01

    Systems audit

    We map what you run, what data each system holds, and where it currently gets re-typed.

  2. 02

    Integration design

    Direction of flow, frequency, conflict rules and failure behaviour agreed up front.

  3. 03

    Sandbox build

    Built and proven against provider test environments before touching live data.

  4. 04

    Controlled go-live

    Phased switch-on with the manual process still available as a fallback.

  5. 05

    Monitoring setup

    Alerts, retry policy and a documented runbook for when a provider has an outage.

Industry Fit

API Development & Integration for Your Sector

The same service looks different in a pharma warehouse and on a brass foundry floor. Pick your industry to see what changes.

Free consultation

Ready to scope your API Development & Integration project?

Share your current process and pain points. We will come back with a suggested approach, a realistic timeline, and a clear cost range.

  • Response within one business day
  • NDA on request
  • Fixed-scope or retainer engagement
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