Third-party API integration
Connect your app or website to external services and SaaS tools.
API integration that connects your tools
Most businesses run on several tools that don't talk to each other. I connect them through APIs so data moves automatically: orders into your accounting tool, leads into your CRM, updates to customers on WhatsApp, and payments confirmed by webhook instead of by hand.
Good integrations aren't just 'call the API'. They handle retries, timeouts, duplicate events and logging, so nothing silently breaks at 2 a.m.
- REST APIs
- Webhooks
- Razorpay
- WhatsApp APIs
- Kong
- Laravel
- FastAPI
- Node.js
- Python
API integration
Integrations I build
WhatsApp API integration
Order updates, notifications and customer messages through WhatsApp APIs.
Payment integrations
Razorpay payments, refunds and subscriptions with webhook verification.
Webhooks & event flows
React to events from other systems in real time.
Internal system sync
Keep CRM, ERP, inventory and databases in sync.
API gateway setup
Secure and monitor your APIs with Kong.
Deliverables
What's included
- Integration design and data mapping
- Secure credential handling
- Retries, idempotency and error handling
- Logging and alerting
- Testing against sandbox environments
- Documentation for your team
Get a development estimate
Tell me what you're building.
Share your idea or requirements and I'll reply with next steps and an estimate.
Discuss your project ↗Process
How the project works
- 01
Discovery call
We talk through your goals, users and must-haves. You get honest advice, including when something isn't worth building.
- 02
Scope & estimate
A written scope with milestones and a fixed quote or clear hourly estimate, so there are no surprises.
- 03
Build in milestones
Regular demos and test builds you can try, with feedback built into each milestone.
- 04
Test, deploy & launch
Testing, deployment to your servers or stores, and a launch checklist.
- 05
Support & growth
Fixes, updates and new features after launch, whenever you need them.
Portfolio
Relevant work
Food-tech platform
OneFoodDialer
- Platform
- Mobile · web backend
- My role
- App, backend, payments, API gateway
- Stack
- Flutter · Laravel · Razorpay · Kong
- Publisher
- Futurescape Technologies Pvt Ltd
API integration pricing
Pricing approach
Every project is quoted after a short discovery call, as a fixed price for a clear scope or an hourly/monthly estimate for ongoing work. The main things that affect API integration cost:
- Number of systems to connect
- Quality of each provider's API and documentation
- One-way vs two-way sync
- Volume and real-time requirements
- Monitoring and support needs
API integration FAQ
Common questions
Can you integrate WhatsApp with my website or app?
Yes. I can send order updates, alerts and notifications through WhatsApp APIs, or connect incoming messages to your system.
What if the third-party API is poorly documented?
I test against their sandbox, log real responses and build defensive handling around edge cases. I'll also tell you early if an integration is risky.
Can you connect my app to my CRM or ERP?
If the system has an API (most do), yes. I map your data, build the sync and add monitoring.
Related services
Often combined with
Start your project.
Freelance API integration for startups and businesses in India and worldwide.