API Integration Services
API integration connects your apps and tools so data flows automatically instead of being copied by hand. We build custom integrations between your website, CRM, ERP, payment gateways, logistics partners and any third-party platform, including building your own APIs where needed, so your systems talk to each other reliably and your team stops doing repetitive manual work.
Why choose EPIXS for api integration
Custom API integration services connecting your apps and tools, payments, CRM, ERP, logistics and third-party platforms, so data flows itself. Free quote.
- Stop copying data by hand between your apps and tools
- Connect payments, CRM, ERP, logistics and more
- Sync data reliably with proper error handling and retries
- Build your own APIs to expose data to partners or apps
- Reduce errors and delays from manual re-entry
- Integrations documented and maintained, not fragile hacks
Make your tools talk to each other
Most businesses run a dozen tools that don't talk: orders come in on the website, get re-typed into the ERP, payments are checked manually, and shipping details are emailed back and forth. Every hand-off is slow and error-prone. API integration removes the re-typing: when something happens in one system, the right data moves to the others automatically, with validation and retries so nothing silently fails.
We integrate the platforms Indian businesses actually use, payment gateways like Razorpay and PayU, CRMs, accounting and ERP systems, logistics and courier APIs, WhatsApp and SMS providers, and any documented third-party service. Where you need to expose your own data to a partner app or mobile client, we design and build clean, secure APIs of your own.
- Payments: gateways, reconciliation, refunds and webhooks
- CRM, ERP and accounting sync for orders and customers
- Logistics, WhatsApp/SMS and other third-party platforms
- API
- Application Programming Interface, a defined way for two software systems to exchange data and trigger actions automatically.
- Webhook
- An automatic message a service sends the moment an event happens (like a payment), so your system reacts instantly instead of polling.
- Middleware
- A small service that sits between your apps to translate, validate and route data when systems don't speak the same format.
- Rate limit
- A cap on how many API requests are allowed in a period; integrations must respect it to stay reliable and avoid being blocked.
- 1Step 1Discover
Map the data flow
We identify which systems must talk, what data moves and the events that trigger each sync.
- 2Step 2Design
Design integration
We design the connections, error handling, retries and security, using webhooks or middleware as needed.
- 3Step 3Build
Build & test
We build the integration and test edge cases, failures and load before anything touches production.
- 4Step 4Launch
Deploy & monitor
We deploy, monitor for failures, and document everything so the integration is maintainable.
API Integration — FAQs
Which platforms can you integrate?
Payment gateways (Razorpay, PayU and others), CRMs, ERP and accounting systems, logistics and courier APIs, WhatsApp and SMS providers, and any documented third-party platform. If it has an API, we can usually connect it.
Can you build a custom API for us?
Yes. Where you need to expose your own data to a partner, mobile app or another system, we design and build secure, documented APIs of your own, with authentication and rate limiting.
What if the integration fails or an API goes down?
We build in validation, retries, alerting and logging so transient failures recover automatically and genuine problems are flagged, rather than data silently going missing.
Will it work with software we already use?
In most cases yes. We assess the systems you have, confirm their APIs or available data, and design integrations around your existing stack rather than asking you to replace it.
How is integration work priced?
It depends on how many systems connect, the complexity of the data and whether we build new APIs. We scope the work and give you a clear quote with a defined engagement model.
Ready to get started with api integration?
Tell us your goals and get a free, no-obligation proposal — usually within one business day.