API Development | REST APIs & Microservices — Cognovat
Service · 08

APIs that connect everything.

REST APIs, GraphQL endpoints and microservices — built clean, documented properly and secured from the start, so your products and systems talk to each other without the seams showing.

Scope your API
GET /api/v1/shipments
200 OK
{
  "total": 1246,
  "status": "live",
  "latency": 18ms
}
REST GraphQL Webhooks OAuth 2.0

The Problem

Disconnected systems don't just create data silos — they create manual work. Every handoff that isn't automated is a step where errors can enter, delays can accumulate and people have to fill the gap.

A well-designed API is invisible in the best possible way: it moves data between systems correctly, consistently and fast, without anyone having to think about it. A poorly designed one is the opposite — it becomes a source of support tickets, sync errors and integration headaches that compound over time. We build the former, and we document it properly so your team and your partners can use it confidently.

What's included

Clean APIs, built to last — not just to ship.

01

REST APIs

Resource-oriented, versioned REST APIs that follow standards and scale under load.

02

GraphQL

Flexible query APIs for data-heavy products where clients need exactly the fields they ask for.

03

Microservices

Decoupled service architecture that lets individual components scale and deploy independently.

04

Third-party Integrations

Payments, shipping, CRM, accounting and any other platform your business relies on.

05

API Documentation

OpenAPI / Swagger documentation that your team and partners can actually use.

06

Security & Auth

OAuth 2.0, JWT, rate limiting and input validation built in from the start.

In the field

A multi-vendor marketplace, built to scale.

The marketplace API layer connects vendor inventory, payment processing, order management and AI recommendations — all in real time, across multiple vendors, with split payout logic running automatically.

Read the case study
Marketplace API

Related services

Cloud Systems

The infrastructure your APIs run on.

AI Integration

Wire AI services into your stack via API.

ERP Software

Connect the ERP to the tools you already use.

Ready to connect your systems?

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