Every integration we ship has error handling, retry logic, idempotency, and a test suite — because integrations that work 95% of the time create more problems than no integration at all.
What We Deliver
API & Integration Development Services
REST API Design & Development
OpenAPI-first design, Fastify implementation, Zod request validation, and versioned endpoints — with a Swagger UI deployed alongside your API from day one.
Third-Party API Integration
Payment gateways (Stripe, Razorpay, PayU), CRMs (HubSpot, Zoho, Salesforce), ERPs (SAP, Tally), and 40+ other services integrated with proper error handling and monitoring.
Webhook Implementation
Inbound webhook endpoints with signature verification, idempotency keys, and dead-letter queues — so every event from Stripe, WhatsApp, or GitHub is captured and processed exactly once.
OAuth & API Key Management
OAuth 2.0 and OpenID Connect flows for third-party app integrations, plus API key generation, scoping, rate limiting, and rotation — so you can build a developer platform on top of your product.
Rate Limiting & Retry Logic
Redis-backed sliding window rate limiting, exponential backoff with jitter for outbound calls, and circuit breakers for third-party dependencies — so your app degrades gracefully instead of failing completely.
API Documentation (OpenAPI)
Auto-generated Swagger UI, a written integration guide for external developers, and a Postman collection — because an undocumented API is not a product, it is a liability.
How It Works
Our API & Integration Development Process
Integration Mapping
Every API to be consumed or exposed mapped with its authentication method, rate limits, data formats, and error response patterns. Gotchas documented before implementation.
API Design
OpenAPI specification written for any new endpoints. Reviewed with frontend team and external consumers before implementation begins.
Development
Endpoints and integrations built with full error handling. Webhook endpoints tested with real payloads from the third-party sandbox.
Testing
Unit tests for business logic, integration tests against real sandbox APIs, and load tests for high-traffic endpoints. Edge cases — empty responses, rate limit hits, timeouts — all covered.
Documentation
Swagger UI deployed, integration guide written, and Postman collection exported. External developers can self-serve from the docs.
Deployment & Monitoring
Production deployment with Datadog monitoring on every third-party call — latency, error rate, and rate limit proximity tracked and alerted.
Technologies We Use
FAQ
Common Questions
Which payment gateways do you integrate?
Razorpay and Stripe most commonly — Razorpay for India-first products (UPI, net banking, EMI), Stripe for international. We also integrate PayU, CCAvenue, PayTM, and PhonePe for specific requirements. All integrations include webhook handling for payment events.
Can you integrate with legacy SOAP or XML APIs?
Yes. We wrap SOAP or XML APIs in a modern REST adapter so your application talks to a clean JSON interface while we handle the SOAP envelope transformation internally. Common for ERP and banking integrations in India.
How do you handle API errors and failures?
Outbound calls use exponential backoff with jitter and a maximum retry count. Persistent failures trigger a dead-letter queue for manual review. Inbound webhooks are acknowledged immediately and processed asynchronously — so a slow processor does not cause the sender to time out and retry.
How do you handle API versioning?
URL prefix versioning (/v1/, /v2/) for APIs with external consumers. We maintain old versions for a documented deprecation period (minimum 6 months) before sunset. Breaking changes always get a new version number.
How long does a typical integration take?
A single well-documented third-party API integration (e.g., Stripe payments, Razorpay, HubSpot) takes 3–5 days. A complex ERP integration with custom data mapping takes 2–4 weeks. A full custom REST API build takes 4–8 weeks depending on scope.
Ready to Get Started?
Tell us about your project and we'll respond within 24 hours with a scoped proposal.