Software · Developer and integration
APIs and integrations
Well-documented APIs and dependable connectors that let your systems and partners exchange data safely.
Integrations fail quietly: a field changes, a webhook is missed, and two systems drift apart for weeks. We design APIs from a written contract first, then build connectors that handle authentication, rate limits, retries and duplicates properly. Every message is traceable, so when a partner asks where an order went, the answer takes seconds.
What we build
- REST and GraphQL APIs designed contract-first with OpenAPI or GraphQL schemas
- Connectors for ERPs, CRMs, payment gateways, shipping carriers and marketplaces
- Webhook receivers with signature checks, idempotency keys and replay
- API gateways with OAuth 2.0, rate limits, quotas and per-partner credentials
- Event-driven integration using message queues and the transactional outbox pattern
- Developer portals with interactive docs, sandboxes and changelogs
DemoInteractive · sample data
Try it live.
A working sample with made-up data. It runs in your browser; nothing is sent anywhere.
openapi: 3.1.0
info:
title: Orders API
version: 2.3.0
paths:
/orders:
post:
operationId: createOrder
parameters:What it does well
Contract first
The OpenAPI spec is agreed before code, so both sides build against the same definition.
Safe retries
Idempotency keys mean a retried request never creates a second order or payment.
Versioning plan
New versions run beside old ones, with deprecation dates partners can see.
Traceable messages
Every request and event carries an ID you can follow across systems.
Built-in limits
Rate limits and quotas protect your systems from runaway or misbehaving clients.
Contract tests
Automated tests catch breaking changes before a partner discovers them.
Questions
REST or GraphQL?
REST suits public and partner APIs, where caching, simple tooling and clear versioning matter. GraphQL suits your own front ends that need flexible queries across many entities. Many systems use both: REST for partners, GraphQL behind web and mobile apps. We choose per use and write down the reasons.
How do you handle partner APIs that are unreliable?
We assume failure. Calls have timeouts, retries with back-off, circuit breakers and a dead-letter queue for messages that keep failing. Failed items appear on a dashboard with the partner’s error and can be replayed once the partner recovers, without double-processing.
Can you document an existing API that has no docs?
Yes. We read the code and real traffic to write an accurate OpenAPI description, add examples and error codes, and set up contract tests so the documentation stays true as the API changes. That is often the first step before any redesign.