API Integration & Automation Services

What is API integration?

An API (application programming interface) is the door a system opens so other systems can read or send data programmatically. API integration means connecting two or more systems through those doors. An order placed on your website is recorded in your accounting software straight away, and a payment status from the payment gateway updates the order in your admin panel.

System integration works in two ways: your app asks for data when it needs it (REST API), or the other system sends a notification the moment something happens (webhook), for example when a payment succeeds.

The integrations businesses ask for most

• Payment gateways. Virtual account, e-wallet, QRIS and credit card payments with providers such as Midtrans and Xendit, including webhooks that mark orders as paid automatically.
• Shipping. Shipping rates at checkout, waybill creation and parcel tracking from couriers in your admin panel.
• Accounting. Sales, invoices and payments are recorded in your accounting software automatically, so finance stops copying data from spreadsheets.
• CRM and ERP. Customer, stock and order data stay the same across your website, apps and internal systems.
• Marketplaces. Marketplace stock and orders are brought into your own system, as far as the marketplace offers an API to sellers.
• Custom APIs. If your system has no API yet, we build one so mobile apps, partners or other systems can connect.

Building a new online store? Payments and shipping can be planned from day one with our e-commerce website development service.

How we build an integration

• Flow mapping. We note which data moves, from which system to which, and when.
• Documentation and access check. We review the third party's API documentation and request sandbox access, the provider's test environment.
• Build and test. The integration is built with REST APIs and webhooks, then tested in the sandbox, including failure cases such as expired payments, duplicate data or a third-party server that does not respond.
• Go-live and monitoring. Every request is logged so failures show up quickly, and the integration documentation is handed over to your team.

For example, for the Vinoti commercial furniture platform we built a REST API in Go that serves a React admin panel and a Next.js website, with JWT authentication and role-based access. Product enquiry forms on the Vinoti website are also connected to WhatsApp.

How much does API integration cost?

API integration starts from Rp5,000,000 per project. The final cost depends on how many systems and data flows are connected, whether sync runs one way or both ways, how complete the third-party API documentation is, whether a custom API or changes to a legacy system are needed, and the transaction volume to be handled.

The price does not include provider fees, such as payment gateway transaction fees, shipping-rate API subscriptions, accounting or CRM licences, and server costs.

Frequently asked questions

Can a payment gateway be added to an existing website?

Yes, as long as we can access the website or app code, for example a Laravel website that is already live. The merchant account is registered in your business's name with the payment gateway, then we connect checkout, payment-status webhooks and the admin panel.

What if our system has no API?

There are several routes: building an API for that system, reading data from scheduled file exports, or replacing the part that is too old. We recommend one after we have seen the system.

How long does an API integration take?

It depends on the number of systems and how quickly the provider grants sandbox access. We share the schedule together with the quote.

How is this different from AI workflow automation?

API integration moves data by fixed rules: payment succeeds, order becomes paid. If the flow needs to read emails, documents or messages and then make a decision, see our AI workflow automation service.

Building a new software product that needs many integrations from the start? See our software, SaaS and MVP development service. Send us the list of systems you want to connect through our contact page. Our other services are on the website and application development page.