The problem we solve
Most platforms don't fail at the core — they fail at the seams. The order service is healthy, the payment provider is healthy, the courier's API is healthy, yet the glue between them is a tangle of cron jobs, CSV exports, and a half-documented script nobody owns. Every manual handoff between ordering, payments, and fulfillment adds hours of latency and another chance for double-charged customers, ghost inventory, and reconciliation spreadsheets that never quite balance.
The root cause is that integrations get treated as afterthoughts: a webhook handler bolted onto a controller with no retry semantics, no idempotency, and no answer to the question "what happens when the provider is down for forty minutes?" Third-party APIs will go down. Stripe will deliver the same event twice. A logistics partner will silently rename a response field. Integration code that doesn't plan for these events isn't integration code — it's a scheduled incident.
Our API integration services treat the seams as first-class production systems. We build resilient middleware that moves data between your platforms automatically — guarded by rate limiting, request signing, idempotency keys, and circuit breakers — so a degraded provider slows one queue instead of taking checkout down with it. The result is business process automation you can actually audit: every message traceable, every failure retried with backoff or parked in a dead-letter queue, nothing moved by hand.
Integration engineering, capability by capability
Payment gateway integration
Payment gateway integration is where sloppy glue code costs real money. We integrate Stripe, Checkout.com, and Razorpay with the failure modes designed out up front: idempotency keys on every charge mutation so client retries never double-bill; webhook signature verification so a spoofed event can never mutate your ledger; and scheduled reconciliation jobs that diff your records against the provider's settlement reports instead of assuming they match. Multi-currency pricing, regional tax, and fraud screening run in the same pipeline, and split-settlement logic routes marketplace payouts at the gateway rather than in fragile application code — the same architecture that powers Peyze, our multi-vendor marketplace platform. Provider choice is a market-by-market decision driven by fees, payout schedules, and local compliance, which is why we recommend per region instead of defaulting to one gateway everywhere.
Logistics & fulfillment automation
Courier and fulfillment APIs are the least standardized integrations you will ever touch — half a dozen partners means half a dozen status vocabularies, auth schemes, and webhook reliability levels. We normalize every partner into a single internal state machine, so "out for delivery" means exactly one thing across every carrier you use. Tracking handshakes run on verified webhooks where partners support them and polling fallbacks where they don't; dispatch numbers land on the order record the moment a label is generated. Dynamic shipping fees are computed at checkout from live rate cards rather than a stale table someone updates quarterly. And stuck shipments — the parcels that simply stop emitting events — surface in alerting instead of support tickets, because the middleware tracks expected state transitions and flags the ones that never arrive.
Communication infrastructure
OTP and notification pipelines fail in ways that don't show up until they cost you signups. We build on Twilio and Firebase with delivery receipts feeding back into the pipeline, so an undelivered OTP triggers an automatic fallback route instead of a silent dead end. Rate limiting on send endpoints blocks SMS-pumping fraud — the attack where bots trigger OTP sends to premium-rate numbers and bill you for the privilege. Push notifications run through Firebase Cloud Messaging with topic fan-out and token hygiene: expired device tokens get pruned, not retried forever. When chat itself is the storefront, we build on the official WhatsApp Business API — the foundation of Waco, our WhatsApp commerce engine — rather than unofficial automation that risks number bans.
MCP & AI-agent readiness
AI agents are becoming API consumers, and most internal systems are not ready to be consumed. We build Model Context Protocol (MCP) gateways that expose scoped, typed tools to LLMs and agents instead of handing them raw database credentials: token-based authentication on every call, read/write separation, and an audit log for every tool invocation. The schema constrains what an agent can ask for; the gateway constrains what it can touch. This is integration engineering, not prompt engineering — the same circuit breakers and rate limits that guard your payment webhooks guard your agent traffic. If you're planning copilots or RAG pipelines on top of that foundation, our AI development and MCP integration service covers the application layer.
How an integration engagement runs
Integration mapping
We inventory every system, data flow, and manual handoff, then produce a dependency map, a failure-mode register, and a sequencing plan. You see exactly what connects to what — and what breaks what — before anyone writes glue code.
Contract and failure design
Schemas, idempotency strategy, retry and backoff policy, circuit-breaker thresholds, and what "degraded" looks like for each integration, agreed in writing while changes are still cheap.
Build and verify
Middleware ships as serverless functions or small services behind CI, exercised against provider sandboxes — Stripe test mode, Twilio test credentials — with replayable webhook fixtures, never against production money.
Operate
Under managed automation we watch queue depth, delivery rates, and provider deprecation notices, handling API version migrations before they break you rather than after.
Where this fits
Integration work rarely stands alone. When the platform on either side of the seam needs rebuilding, our web application development team engineers the high-throughput REST and GraphQL APIs the middleware connects to. The pipelines themselves run on serverless and containerized infrastructure provisioned through our cloud and DevOps practice, with encryption, request signing, and zero-trust controls documented on our security page. Start with the mapping session — it tells you what to fix first, whether or not we're the ones who build it.