XI AI

Service 04 / 05

API Integration Services

The backbone that keeps your applications connected: robust REST and GraphQL APIs, secured properly, documented so the next developer doesn’t have to guess.

API Integration

What's included

Most businesses run on a handful of tools that do not talk to each other, so the same details get typed in three times and something always gets missed. We build the connections between them, so your systems stay in step on their own.

  • 01REST & GraphQL API development
  • 02Stripe, Twilio & 100+ integrations
  • 03OAuth, JWT & rate limiting
  • 04Swagger/OpenAPI documentation
StackRESTGraphQLOAuthWebhooks

API Integration

API Solutions

01

REST API Development

Build robust RESTful APIs with proper versioning and documentation

02

GraphQL APIs

Flexible APIs that let clients request exactly what they need

03

Third-Party Integration

Connect with Stripe, Twilio, SendGrid, and 100+ services

04

Webhooks

Real-time event notifications and data synchronization

05

API Security

OAuth, JWT, rate limiting, and secure authentication

06

API Documentation

Comprehensive docs with Swagger/OpenAPI specifications

API Integration

What We Can Build

01

Payments

Stripe, PayPal and other gateways wired into your site, billing and accounts.

02

CRM Sync

Salesforce, HubSpot and the tools around them sharing the same customer details.

03

Messaging

Texts and emails sent through Twilio or SendGrid when something happens in your systems.

04

Legacy Systems

Older systems connected to modern APIs through a middle layer, without disrupting what already runs.

05

Real-Time Updates

Webhooks that tell your other systems the moment something changes, so nothing waits for a nightly sync.

06

Your Own API

A secure, documented API of your own, so partners and apps can connect to you.

API Integration

Common questions

01What types of APIs do you integrate?
We integrate all API types: REST, GraphQL, SOAP, webhooks. Popular integrations: payment gateways (Stripe, PayPal), CRMs (Salesforce, HubSpot), ERPs (SAP, Oracle), marketing tools, social media, and custom APIs.
02How long does API integration take?
Simple integrations: 1-2 weeks, medium complexity: 2-4 weeks, complex enterprise integrations: 1-3 months. Timeline depends on API complexity and requirements.
03Can you integrate legacy systems with modern APIs?
Yes! We specialize in legacy system integration. We create middleware layers to connect old systems with modern APIs, ensuring seamless data flow without disrupting existing operations.
04Do you provide API documentation and support?
Yes, we deliver comprehensive API documentation, integration guides, code examples, and ongoing support. We also offer API maintenance packages with 24/7 monitoring.
05What is the cost of API integration?
Pricing varies: Simple integrations $2,000-$5,000, medium complexity $5,000-$15,000, enterprise solutions $15,000+. Custom API development starts at $10,000. Free consultation and detailed quotes provided.