API Integration Services &
Custom API Development

Connect your CRM, ERP, payments and apps so data flows automatically — no more copy-paste between systems.

When systems don't talk to each other, people fill the gap — retyping orders, exporting spreadsheets and fixing errors that never should have happened.

Pixarsart's API integration services connect the tools your business already runs on, and build secure custom APIs when off-the-shelf connectors fall short. We design integrations that are reliable, monitored and documented, so data stays accurate and your team gets hours back every week.

Faster

Workflow Execution

Better

Decision Support

Stronger

Operational Efficiency

Scalable

Application Performance

API Development & Integration Services

Custom API Development

Secure REST and GraphQL APIs for your apps and partners.

CRM Integration

Salesforce, HubSpot and custom CRMs synced with your systems.

ERP & Accounting Integration

Orders, inventory and invoices flowing automatically.

Payment Gateway Integration

Stripe, PayPal, Square and ACH payments.

Third-Party API Integration

Maps, SMS, email, shipping and more.

Data Sync & Middleware

Reliable sync between systems, with error handling.

AI API Integration

OpenAI and Claude connected to your workflows.

API Documentation & Maintenance

Clear docs, versioning and monitoring.

Why Companies Choose
Pixarsart for Integrations

Reliable by design

Retries, logging and alerts so failures are caught, not hidden.

Secure data handling

Authentication, encryption and least-privilege access.

Documented and maintainable

Every API is documented so any team can support it.

Complete transparency with Kanbaan

Track every integration and test live.

Our API Integration Process

Step 1

Map

Systems, data flows and pain points
Step 2

Design

Integration architecture and API contracts
Step 3

Build

APIs, connectors and middleware in sprints
Step 4

Test

Data accuracy, edge cases and load
Step 5

Launch

Deploy with monitoring and alerts
Ongoing

Support

Updates when vendors change their APIs

Integrations for Every Business System

CRM sync

Custom CRM & client portals

Pricing

Single Integration (Most popular)

$5K – $20K

Multi-System Integration

$20K – $60K

Custom API Platform

$60K+

System Integration and API Development,
End to End

REST API Development
Backend development services

Fast, standard APIs for web and mobile.
GraphQL API Development
Backend development services

Flexible APIs for complex data.
Legacy System Integration
Application modernization services

Connect older systems without replacing them.
Back-End Development
Backend development services

The services behind your APIs.
Integration Monitoring
Cloud & DevOps

Alerts and support when something breaks.

Integration Technologies

A software development partner for companies that choose quality over the lowest quote

Great products come from the right partnership, and the right partnership starts with honest expectations. Pixarsart isn’t the right fit for every project. That focus is exactly why our clients trust us with the products their business depends on.

Buyers comparing only hourly rates

If the lowest hourly rate is your main decision factor, there are cheaper options out there. We price for outcomes – senior engineers, proper QA and on-time delivery – because rework and missed launches cost far more than a lower rate saves.

Small fixes and quick website updates

Pixarsart focuses on building and scaling apps, software and AI products. For quick website fixes, WordPress or Shopify updates and urgent repairs, our sister brand alley214 offers fast, fixed-price help.

Teams that want to manage every developer task

We work best as an accountable partner, not a pair of hands to direct line by line. You set the goals and priorities, our leads manage delivery, and you keep full visibility of progress in Kanbaan.

Projects without clear ownership on your side

Every successful build has a decision-maker who can review work and give timely feedback. If no one on your team can own the project, we’ll recommend starting with a short discovery workshop first.

Get an Integration Plan

Tell us about your app idea or existing product and we’ll review your requirements, recommend the right architecture, and provide a realistic timeline and cost range.

World Economic Forum

Committed To Improving The State Of The World

Hyprov

Improv Under Hypnosis

Margot Community

Online Community Connecting Women with Mentors

Pixie Cup

Silicone Storage Cup

Legends of the Galaxy

Community Driven Roleplaying Experience

Women Entrepreneurs

ERP System

Stampbox

An all-in-one platform for both beginners and expert philatelists

Point App

Now Everyone is in League

FixTrack

Transforming Device Management Through Tailored Digital Ecosystems

API Integration Services & Custom API Development