API integration & development.
Your business data lives in systems that were never introduced to each other. We build the connections and the interfaces on top: front ends fed by live data, systems that sync instead of being retyped, and APIs of your own when you need one.
Connect my systems ↗Overview
Projects
Usage
Team
Billing
Systems that refuse to talk.
The problem
The CRM knows the customer, the ERP knows the stock, the website knows neither, and a person spends afternoons ferrying data between them. Every manual hop adds delay and a chance to mistype.
Our solution
We connect the systems through their APIs and build clean interfaces on the live data. Orders flow to accounting on their own, the website shows real stock, and the afternoons come back.
List the systems that should talk but do not. We will map the connections.
Book a free call ↗API services.
Connections, interfaces, and the plumbing between them.
Third-party integrations
CRMs, payment gateways, ERPs, courier systems, and marketing tools connected to your site or app.
API-driven front ends
Fast interfaces on React and Next.js that read and write live data from whatever runs your business.
Data synchronization
Two-way syncs that keep systems agreeing about customers, orders, and stock, with conflicts handled sanely.
Custom API development
REST and GraphQL APIs of your own, documented, versioned, and ready for partners or mobile apps.
Webhooks & automation
Events that trigger actions across systems, an order placed here, an invoice raised there, untouched by hand.
Reliability & monitoring
Retries, alerts, and logging, because an integration that fails silently is worse than none.
Not sure which of these you need? We will map it with you in a free call.
Book a free call ↗The integration stack.
The protocols, platforms and monitoring behind connections that keep working.
How an integration project runs.
Mapped, built, and monitored, with failure handled before it happens.
Why our integrations stay connected.
Anyone can call an API once. The craft is in what happens when it fails at 2 a.m.
Built for failure days
Retries, queues, and alerts mean a provider outage becomes a delay, not a data loss.
Data stays reconciled
Sync rules are explicit about which system wins, so records never quietly drift apart.
Documented flows
Every connection is diagrammed and documented, so it is maintainable by any team, forever.
Fast on the front
The interfaces on top of the data stay quick, cached sensibly, and honest about loading states.
Integration work fits when.
Industries we serve.
Think GAP3 is the right fit for your team? Tell us about your project.
Start a project ↗API questions, answered.
Connecting two systems so they exchange data automatically: your website to your CRM, your store to your accounting, your app to a payment gateway. The manual retyping between them disappears.
Anything with an API, and most modern software has one: CRMs, ERPs, payment gateways, courier services, marketing platforms, and custom or legacy systems. File-based exchanges work as a fallback for the stubborn ones.
Yes. Stock levels, pricing, availability, and account data can render live on your site through a fast API-driven front end.
With our builds, the work queues and retries, an alert fires, and nothing is lost. Designing for the failure case is most of the engineering.
Yes. REST or GraphQL, versioned and documented with Swagger, ready for partners, mobile apps, or your own future front ends.
Explicit rules about which system owns each field, idempotent updates, and reconciliation checks that flag drift instead of letting it accumulate.
Yes, when built properly: scoped keys, encrypted transport, secrets managed outside the code, and access logged. We treat integration credentials like the master keys they are.
A single well-documented API connects in days to a couple of weeks. Multi-system syncs with edge cases take longer, and the mapping phase tells us which before you commit.
A fixed quote per connection or project. Weigh it against the daily hours of retyping it removes; integrations usually clear that bar quickly.