NikhilWorks

API Integration for India Businesses

API Integration Services for Indian Businesses

One developer, any API -- payments,
messaging, CRM, shipping, maps or a system you already use.

Remote-First
No local office needed — work from anywhere
Fast Delivery
7-21 day turnaround
Timezone Friendly
Calls & email on your schedule
16+
Projects Done
4+
Years Experience
5/5
Client Rating
Any REST or SOAP API
Works With Your Existing Stack
Tested Before Handover

One Developer for Every API Your Business Needs

Most small businesses end up needing several different APIs over time -- a payment gateway first, then WhatsApp notifications, then a CRM connection, then GST e-invoicing. Hiring a different freelancer or agency for each one means re-explaining your codebase every time and juggling multiple invoices.

This page is the starting point if you're not sure which specific integration you need yet, or if you need more than one connected at once. Below are the integration categories handled most often, each with its own dedicated page and pricing -- or get in touch and describe what you're trying to connect and a scope gets worked out from there.

What's Included

Everything needed to get this API live, tested and reliable

Since Aug 2022

Any REST or SOAP API

NOT LIMITED TO A FIXED LIST

If it has documentation, it can be connected -- payment, messaging, CRM, shipping, government or internal.

  • REST, SOAP & GraphQL APIs
  • Webhook setup & handling
  • OAuth & API key auth
Since Aug 2022

Works With Your Existing Stack

NO REBUILD REQUIRED

Integration is added into your current PHP, WordPress, WooCommerce or custom site without a rewrite.

  • PHP / MySQL backends
  • WordPress & WooCommerce
  • Custom-built websites
Since Aug 2022

Tested Before Handover

NOT JUST "IT CONNECTED"

Error handling, retry logic and edge cases (failed payments, expired tokens, rate limits) are checked, not assumed.

  • Error & failure handling
  • Rate-limit awareness
  • Sandbox testing before go-live

Browse Integration Categories

Jump straight to the API you need connected

Frequently Asked Questions

Yes -- combining a payment gateway, WhatsApp notifications and a CRM connection into one scoped project is common and usually cheaper than three separate ones.

It's very likely still doable -- the pages below cover the most-requested categories, but any documented API can generally be integrated. Share the API docs and a quote follows within 24-48 hours.

Indian clients are the focus of this page specifically, but the same integration work is done for businesses internationally too -- get in touch either way.

By reading the provider's documentation first -- authentication method, number of endpoints actually needed, and whether webhooks are involved. That's what the price is based on, not a guess.

Most providers version their APIs and give notice before deprecating an old version. If a breaking change does land, it's a small fix rather than a rebuild -- covered under a maintenance plan if you have one, or quoted separately if not.

Yes, if that's needed on your end -- most API docs are public anyway, but for internal/private APIs or proprietary systems an NDA is signed before anything is shared.

Which Engagement Model Fits Your Situation

There isn't one right answer -- it depends on how many integrations you need and over what timeframe

Option Best For Worth Knowing
One-off fixed-scope project A single, clearly defined integration (e.g. just Razorpay, just WhatsApp notifications) Fixed price agreed up front, delivered and closed -- the most common way these projects run.
Bundled multi-API project Two or three integrations needed around the same time (payments + WhatsApp + CRM, say) Scoped and quoted together -- usually cheaper and faster than running them as separate projects.
Ongoing maintenance add-on Businesses that expect to keep adding integrations or need someone to watch for breaking API changes Covered under the website maintenance plans rather than a separate arrangement for every new API.

Where This Usually Goes Wrong

Issues seen often enough on real projects to plan around from day one

Picking a provider before checking the docs

A provider gets chosen off a sales call or a comparison blog post, then the actual API docs show a limitation (missing webhook, low rate limit, no sandbox) after the decision is already made public internally.

No budget for what happens after launch

Tokens expire, providers deprecate API versions, rate limits change. An integration that isn't checked on for a year is usually the one that quietly breaks first.

Treating "it connected" as "it's done"

A successful test call in Postman isn't the same as handling a timeout, a malformed response or an expired token in production -- that gap is where most support requests come from later.

How the Integration Gets Built

1

Understand What You Actually Need

A short call or message thread to pin down which system, which API and what "done" looks like -- before any pricing is discussed.

2

Fixed-Scope Quote

A written quote covering exactly what's included, in your currency, usually back within 24-48 hours.

3

Build & Sandbox Test

Built against the provider's sandbox/test credentials first, including failure cases -- not just the happy path.

4

Go Live & Verify

Switched to production credentials and verified with a real end-to-end transaction before the project is called complete.

Let's Get This API Connected and Tested

Free consultation. No obligation. Get a fixed-scope quote in INR within 24-48 hours.

Start a Project See My Work

Other API & Integration Services

Need more than one API connected? These are usually scoped together as a single project.