Affordable Custom API Development ServicesAPI Development
We build custom APIs that cost less than hiring a full team. Get a fixed price quote in 2 weeks.
IRPR builds custom APIs for web apps, mobile backends, and third-party integrations. We use Node.js, Python, Go, and serverless on AWS.
A typical custom API ships in 8-12 weeks with fixed pricing from $80K to $250K. All APIs meet PCI-DSS, HIPAA, or SOC 2 requirements if needed.
Our clients are startup CTOs who need a core API for their product, enterprise teams replacing legacy integrations, and SaaS founders building a B2B integration layer.
Types of software we ship.
REST API Development
Build a REST API with OpenAPI specs. Includes Swagger docs and auto-generated SDKs.
GraphQL API Development
Flexible GraphQL APIs that let clients fetch only the data they need. Built with Apollo and Node.js.
Third-Party API Integration
Connect your system to 50+ third-party APIs including Stripe, Salesforce, and Slack.
Payment Gateway API
PCI-DSS compliant payment APIs using Stripe, Braintree, or Adyen. Handle 10,000+ transactions per hour.
Social Media API
Aggregate data from Twitter, Instagram, and Facebook. Process 1M+ posts daily with Kafka and Python.
CRM API
Sync data with Salesforce, HubSpot, or Zoho in real time. Includes OAuth and webhook handling.
ERP API
IoT API
Collect and process data from thousands of devices using MQTT, AWS IoT Core, and InfluxDB.
We build for every business type.
Ecommerce
Healthcare
Fintech
SaaS
Logistics
Why affordable custom APIs matter
Affordable custom APIs are built with the right architecture from day one.
A well-designed API saves months of rework. IRPR uses RESTful conventions, GraphQL for complex queries, and serverless to keep costs low.
Every API includes automated tests, performance benchmarks, and rate limiting. You get a production-ready service without surprise bills.
Generic dev shops vs IRPR
Many shops charge hourly and miss deadlines. We fix that.
Hourly billing leads to scope creep and overruns. IRPR gives you a fixed price after the Roadmap phase.
We ship in 8-12 weeks with full documentation and compliance. You own every line of code.
- Hourly billing
- No fixed scope
- Unknown delivery date
- Cutting features to ship
- Code not documented
- No compliance understanding
- Fixed price from week 2
- Clear scope in Roadmap
- 8-12 week timeline
- Full feature set ships
- Auto-documented APIs (Swagger)
- HIPAA/PCI/SOC 2 ready
Our process for building your API
We follow a 4-phase process to deliver your API on time and on budget.
Each phase includes a checkpoint with your team. You see working code every week.
The Roadmap phase locks the price and timeline. No surprises after that.
What ships with every API
Every custom API comes with these deliverables built in.
- Source code in your GitHub repo
- OpenAPI/Swagger docs
- Postman collection
- CI/CD pipeline on GitHub Actions
- Sentry error tracking
- AWS or GCP deployment
- Unit and integration tests
- Performance benchmarks
- Rate limiting and auth middleware
- Written API usage guide
What we ship in this practice.
Payment Processing API
Built a payment gateway API that processes 10,000+ transactions per hour. Integrated with Stripe Connect and Plaid for bank verification. Reduced manual reconciliation by 90%.
Healthcare FHIR API
Created a FHIR-compliant API that reduced patient data exchange time by 75%. Used Node.js, PostgreSQL, and AWS HealthLake. Serves 500+ clinics.
Ecommerce Inventory API
Developed a real-time inventory sync API across 3 warehouses. Cut stock discrepancies from 5% to 0.2%. Stack: Python, Redis, AWS Lambda.
SaaS Billing API
Built a subscription billing API handling recurring invoices and dunning. Supported 50,000+ customers. Tech: Node.js, Stripe, PostgreSQL.
Logistics Tracking API
Designed a shipment tracking API covering FedEx, UPS, and USPS. Reduced manual tracking time by 20 hours per week. Stack: Go, RabbitMQ, PostgreSQL.
Social Media Analytics API
Aggregated data from Twitter, Instagram, and Facebook. Processed 1M+ posts daily. Tech: Python, Apache Kafka, AWS S3. Delivered 95% cost reduction vs legacy system.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges.
On-time delivery 98% of projects
IRPR has a 98% on-time rate across 200+ products. We use agile sprints and weekly demos to keep every build on schedule.
Senior engineers only - no juniors
Every IRPR engineer has 10+ years of experience. You never get junior developers learning on your project.
Full code ownership
You own all source code, documentation, and infrastructure scripts. No licensing fees or royalties.
Compliance built in - HIPAA, PCI, SOC 2
We include audit logging, encryption at rest and in transit, and access controls by default. No expensive retrofitting.
Post-release support and monitoring
We provide 30 days of post-launch support. Your API is monitored with Sentry, Datadog, and PagerDuty for 99.9% uptime.
Idea → Roadmap → Product → Release.
Every engagement runs through the same four-stage pipeline. Predictable by design.
Questions clients ask first.
Related services and industries.
Ready to build? Let's talk.
30-minute discovery call. No deck. We'll tell you honestly what it takes, how long, and how much.