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API integration

We turn data moved by hand between your systems into monitored, reliable integrations.

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  • Next.js
  • API
  • AI

From idea to live

A working release every sprint. You see what shipped, and when.

  1. Discovery

    The workflow, the users and the success measure on one page.

    • System map
    • Data flow
  2. Design

    Screens and the data model, a clickable prototype.

    • API contract
    • Failure cases
  3. Build

    Two-week sprints, a working release in each.

    • Sprints 1–3
    • Sandbox
  4. Test

    Automated tests, acceptance on real data.

    • End to end
    • Load test
  5. Launch

    Go-live, monitoring and maintenance.

    • Live
    • Monitoring and alerts
  • v2.1 · Sprint 3 · ERP ↔ CRM sync ✓ tests passed
  • v2.0 · Sprint 2 · webhook queue ✓ live
  • v1.9 · Sprint 1 · authentication ✓ live
Sample flow · every project has its own release log
In short

What is API integration? The answer in one paragraph.

Roicool's API integration service covers an inventory of systems and data flows, the choice between an automation platform and a custom service, field mapping, authentication, error handling and retry mechanisms, logging and monitoring, and documentation.

Last updated: 21 October 2026View as Markdown

Your team moves data between systems by copy and paste.

Three problems we solve.

  • Your team moves data between systems by copy and paste.

  • Existing automations break silently and nobody notices.

  • You are moving to a new CRM or ERP and your existing flows need to move with you.

Scope

What we do

01Inventory
01

Inventory

Systems, data flows, frequency and volume.

Deliverable · Flow map
02Choosing the method
02

Choosing the method

Platforms such as Make, n8n and Zapier, or a custom service.

Deliverable · Working integrations
03Development
03

Development

Field mapping, authentication, transformations, error handling.

Deliverable · Monitoring and alerts
04Monitoring
04

Monitoring

Logging, alerts and retries; documentation.

Deliverable · Documentation

Price: by scope, written in the proposalAsk for a proposal

Cases

Results, with their method. One case from this service.

All case studies
  • SESTEK
  • SaaS

SESTEK: how we connected Webflow forms to Dynamics 365

We connected SESTEK's Webflow forms not straight to the CRM but to a Webflow Cloud app on the site's domain; only this server layer talks to Microsoft Dynamics 365, and the browser never does. The forms are React code components managed from the Designer, on a bilingual CMS whose folder and item slugs are largely translated.

Read the SESTEK case

Team and proof

The team that does the work, the result we measured. Our rating and our badges can be checked.

Clutch reviewsClutch
5.0★★★★★8 verified reviews

“Roicool knew what they were doing and were ready to answer our questions with their expertise anytime.”

Sena Miskioğlu, SESTEK Marketing Manager ·
Clutch profile
Case result

For SESTEK we build the integrations that connect its enterprise website to the company's CRM and customer systems.

Team

Strategy, content, development and measurement in one team.

projects
13
cases
9
Semih BayındırSenior Software Engineer & Tech Lead · Owner of this service

Frequently asked questions

  1. Which systems do you connect?

    Systems that offer an API, such as CRM, ERP, ad platforms, analytics, payment and communication tools. For simple flows we use automation platforms; for complex flows, a custom integration service.

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  2. Are Make, n8n or Zapier enough?

    For flows with few steps and low volume, they are often enough. When you have high volume, complex error handling or sensitive data, a custom integration service is more reliable.

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  3. How will we know if an integration breaks?

    Every integration we build has logging, error notifications and a retry mechanism; critical flows are monitored and an alert is sent when something fails.

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Question not here? Write to us

Clutch5.08 reviews (5.0 out of 5) (opens in a new tab)

Let’s start

Let’s find where to start, together.

In a 30-minute intro call we listen to your goals and agree on the right first step.