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. Custom connectivity, built with AI, so it is live in days rather than months.
- Fixed price
- from $100
- Delivery
- 2 to 10 working days
- Billing
- Agreed before work starts
- If not live in 10 working days
- We work for free
Recognize any of these problems?
Legacy system data trapped
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.
- 2 hours daily syncing data manually
- Can't use modern tools effectively
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- Frequent overselling (stock data outdated)
- Locked into legacy software
No pre-built connector exists
Need to connect proprietary system to CRM, accounting, or e-commerce. No Zapier connector. No API available. Systems can't talk.
- Manual data entry between systems
- Data always out of sync
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- Staff time wasted copying data
- Can't integrate with modern stack
Need custom integration logic
Pre-built connectors too simple. Need complex data transformations, business rules, validation. Standard tools can't handle your unique requirements.
- Force-fit processes into rigid tools
- Workarounds and manual steps
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- Data quality issues
- Integration breaks when requirements change
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)
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)
API development packages
Three sizes, each with a fixed price range and a fixed delivery time. We confirm the exact figure in writing before work starts.
API Starter
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)
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- Testing
- Deployment
- 30-day support
API Professional
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)
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- Comprehensive error handling
- API monitoring and analytics
- Load testing
- Production deployment
- 60-day support
API Enterprise
Large-scale integration platform
- Microservices architecture
- GraphQL support
- Advanced security (OAuth 2.0, JWT)
- API gateway
- Versioning strategy
- Developer portal (for external users)
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- SDKs (code libraries for multiple languages)
- High availability and auto-scaling
- Comprehensive monitoring (APM)
- SLA guarantees
- 90-day support
Fixed scope, fixed price, fixed date. Live in 10 working days, or we keep working for free.
Automation work we can show you
An inspection business automated from booking to invoice
Bookings, dynamic inspection checklists and invoicing run end to end in Zoho CRM and Zoho Flow with no manual steps.
Read the case studyReady for custom API?
Schedule an API consultation. We'll discuss your integration requirements and design a solution.
1-hour technical consultation. No obligation.