API Development

API development is the design and build of RESTful and GraphQL APIs that connect every system a business owns, from internal microservices to third-party integrations such as payment gateways, CRMs and logistics providers. It is essential for businesses whose systems need to exchange data reliably, whether internally or with external partners.

Deliverables include versioned API documentation using OpenAPI/Swagger so consumers of the API always know what to expect from a given version, authentication via OAuth2 or JWT to control access securely, rate limiting to protect backend systems from overload, and automated integration tests so changes don't silently break consuming applications. We design APIs to be versioned from the start, so breaking changes can be introduced without disrupting existing integrations.

We also provide API gateway setup for centralised logging, throttling and analytics across all your services, giving you one place to monitor traffic and issues instead of checking each service individually. Support includes monitoring for breaking changes as your ecosystem evolves, so integration partners are informed and given time to adapt before deprecated versions are retired.

Q: REST or GraphQL, which do you recommend?
A: REST suits most standard integrations with clear, resource-based endpoints; GraphQL suits front-ends or partners that need flexible, precise data queries across complex relationships. We advise based on your consumers' needs.

Q: What does the engagement include?
A: API design and development, OpenAPI/Swagger documentation, OAuth2/JWT authentication, rate limiting, automated integration tests, and optional API gateway setup.

Q: How are breaking changes handled?
A: Through API versioning and monitoring, so partners are notified ahead of deprecations rather than integrations breaking without warning.