REST APIs expose resources through URL-based endpoints — straightforward, widely supported, and ideal for most integration use cases. GraphQL APIs expose a single endpoint through which clients query exactly the data they need — ideal when different consumers need different data subsets, reducing over-fetching and under-fetching. For most system-to-system integrations, REST is the right choice. For flexible, client-driven data access (especially in web and mobile apps), GraphQL provides significant advantages. We recommend the right approach for your specific use case.

We implement defence-in-depth API security — API key authentication for server-to-server integrations, OAuth 2.0 with JWT tokens for user-context APIs, rate limiting to prevent abuse and DoS attacks, input validation on all parameters, HTTPS enforcement, CORS configuration, comprehensive request logging for audit and forensics, and vulnerability scanning against OWASP API Security Top 10 risks. Security is designed in from the API specification stage, not added as an afterthought.

We can integrate with any system that exposes an API — REST, GraphQL, SOAP, or proprietary — or that provides database access, file export, or other integration mechanisms. For systems without APIs (older legacy systems), we can build middleware integration layers or use RPA for UI-based integration. We have experience integrating with hundreds of third-party services across payment processing, communication, logistics, ERP, CRM, accounting, and many other categories.

Webhooks are event-driven integrations where a source system sends HTTP requests to your API when specific events occur — a payment is processed, an order is placed, a record is updated. They are ideal for real-time integrations where you need to react to events as they happen, rather than polling an API repeatedly to check for changes. We implement both webhook producers (your system notifying others) and webhook consumers (your system receiving and processing events from other platforms).

We implement a clear versioning strategy from the start — typically URL versioning (/api/v1/, /api/v2/) for REST APIs. New versions are created for breaking changes; backward-compatible additions are made to existing versions. We maintain old versions for an agreed deprecation period, communicating the timeline clearly to API consumers. Good versioning planning prevents the painful situation of breaking existing integrations when the API needs to evolve.

We produce comprehensive API documentation including an interactive OpenAPI/Swagger specification (enabling developers to explore and test the API directly from the documentation), authentication and authorisation guides, request and response examples for every endpoint, error code reference, rate limiting documentation, and a getting-started guide for new integrators. Good documentation is as important as the API itself — it determines how quickly and correctly developers can build integrations.

We implement API monitoring covering uptime (availability alerting when the API is unreachable), latency (alerting when response times degrade), error rates (alerting on elevated 4xx or 5xx responses), usage analytics (request volumes by endpoint, consumer, and time period), and request logging for debugging and security forensics. We configure automated alerting so your team is notified immediately if API performance degrades — before users or integration partners notice a problem.