Custom API Development When Pre-Built Connectors Don't Exist

API development for businesses needing to connect systems that don't have ready-made integrations. $15K-$60K investment. 6-12 weeks. Custom connectivity.

Real-timedata access via API
76 hrs/monthmanual work eliminated
OAuth 2.0enterprise security
Unlimitedfuture integrations
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Recognize Any of These Problems?

Legacy System Data Trapped

The Situation: Critical business data in custom ERP from 2008. No API. Can't connect to Shopify, Salesforce, Power BI, or any modern tools. Data export, manual update nightmare.

What It Costs You:
  • 2 hours daily syncing data manually
  • Can't use modern tools effectively
  • Frequent overselling (stock data outdated)
  • Locked into legacy software

No Pre-Built Connector Exists

The Situation: Need to connect proprietary system to CRM, accounting, or e-commerce. No Zapier connector. No API available. Systems can't talk.

What It Costs You:
  • Manual data entry between systems
  • Data always out of sync
  • Staff time wasted copying data
  • Can't integrate with modern stack

Need Custom Integration Logic

The Situation: Pre-built connectors too simple. Need complex data transformations, business rules, validation. Standard tools can't handle your unique requirements.

What It Costs You:
  • Force-fit processes into rigid tools
  • Workarounds and manual steps
  • Data quality issues
  • Integration breaks when requirements change
API TYPES

Types of APIs We Build

RESTful APIs

Modern API standard using HTTP requests. Best for most use cases.

When to Use: Building new API for modern systems

GraphQL APIs

Modern query language. Request exactly what you need. Single endpoint.

When to Use: Need flexible data retrieval (mobile apps)

SOAP APIs

Older XML-based standard. Still used by legacy enterprise systems.

When to Use: Connect to legacy enterprise software (SAP, Oracle)

Webhook Integration

Real-time notifications when events happen. Push vs poll.

When to Use: Need instant updates (order placed, payment received)
THE SOLUTION

What You Get With Custom API Development

RESTful API Development

Build modern REST APIs on top of your legacy systems or databases. Expose data via standard HTTP endpoints. JSON format. OAuth authentication.

Impact:

  • Legacy system now accessible to modern tools
  • Real-time data access (vs daily exports)
  • Secure API key authentication
  • Future-proof integration architecture

What's Included:

  • RESTful endpoint design
  • CRUD operations (create, read, update, delete)
  • OAuth/API key authentication
  • Rate limiting
  • JSON data format
  • Comprehensive documentation
  • Testing and deployment

Webhook Integration

Real-time event notifications. When order placed, shipment created, payment received—instant webhook to your systems. No polling, no delays.

Impact:

  • Real-time updates vs scheduled polling
  • Instant response to events
  • Reduced system load
  • Better user experience

What's Included:

  • Webhook endpoint development
  • Event subscription management
  • Signature verification
  • Retry logic for failed deliveries
  • Queue processing for high volume
  • Monitoring and alerting

Integration Middleware

Connect systems that don't talk. Middleware sits between systems, translates data formats, handles authentication, manages errors, monitors health.

Impact:

  • Bi-directional data sync
  • Real-time or scheduled updates
  • Error handling and retry
  • Complete integration visibility

What's Included:

  • Connector development for both systems
  • Data transformation logic
  • Field mapping configuration
  • Conflict resolution rules
  • Error handling and logging
  • Monitoring dashboard

Custom API Features

Complex business logic, data validation, transformation, enrichment. High-performance for millions of requests. Enterprise security and compliance.

Impact:

  • Handle unique requirements
  • Enterprise-grade security
  • High performance at scale
  • Complete control and customization

What's Included:

  • Custom business logic
  • Data validation and transformation
  • Performance optimization
  • Advanced security (OAuth 2.0, JWT)
  • Load balancing and auto-scaling
  • Comprehensive monitoring (APM)
PACKAGES

API Development Packages

API Starter

$15,000 - $25,000
Timeline: 5-8 weeks

Perfect For: First API project, straightforward use case

  • Requirements analysis
  • API design (endpoints, data models)
  • Development (RESTful API)
  • Authentication (API keys)
  • Basic error handling
  • Documentation (API reference)
  • Testing
  • Deployment
  • 30-day support
Get Started
Most Popular

API Professional

$30,000 - $60,000
Timeline: 8-12 weeks

Perfect For: Production-grade API for business-critical integration

  • Complex business logic
  • OAuth authentication
  • Rate limiting and throttling
  • Webhook support (send and receive)
  • Data transformation and validation
  • Queue processing (handle high volume)
  • Comprehensive error handling
  • API monitoring and analytics
  • Load testing
  • Production deployment
  • 60-day support
Get Started

API Enterprise

$80,000 - $150,000+
Timeline: 12-20 weeks

Perfect For: Large-scale integration platform

  • Microservices architecture
  • GraphQL support
  • Advanced security (OAuth 2.0, JWT)
  • API gateway
  • Versioning strategy
  • Developer portal (for external users)
  • SDKs (code libraries for multiple languages)
  • High availability and auto-scaling
  • Comprehensive monitoring (APM)
  • SLA guarantees
  • 90-day support
Get Started
CASE STUDY

Real Results: ManufacturePro

The Challenge

Company: ManufacturePro (₹180Cr revenue, custom ERP from 2008)
Problem: ERP has no API, can't connect to modern systems
Solution: Custom API layer on top of ERP database
Investment: $48,000 | Timeline: 10 weeks

Results After 12 Months:
  • Shopify stock updates: 2 hrs/day → 0 (automatic)
  • CRM data entry: 5 hrs/week → 0 (API pulls real-time)
  • Power BI reports: 12 hrs/month → 0 (automatic)
  • Total time saved: 76 hours/month (₹2.28L/month)
  • Overselling eliminated (real-time stock sync)
  • Sales cycle -15% (instant order history access)
  • ₹87.4L total annual benefit

"Our ERP from 2008 was holding us back. No API, can't connect to Shopify, Salesforce, Power BI—nothing. Maxwize built a modern API layer on top of our old database. Didn't touch the ERP application (too risky) but now we can connect any modern tool. Eliminated 76 hours of manual work every month and enabled digital transformation. This API unlocked our data and our future." — CIO, ManufacturePro

Ready for Custom API?

Schedule an API consultation. We'll discuss your integration requirements and design a solution.

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