API Design & Architectureby SoftwareCrafting

Service Overview

We design APIs that survive contact with real consumers and keep working as your product changes. That starts before any code: resource modelling, consistent naming and error semantics, pagination and filtering conventions, authentication and authorisation model, and an explicit versioning strategy so you can evolve without breaking every client. We work in REST, GraphQL, and tRPC, and we pick based on who is consuming the API rather than on preference. The contract is the deliverable as much as the implementation, which means OpenAPI or GraphQL schemas that are the source of truth, generated type safe clients, and contract tests that fail the build when the implementation drifts. We also design for the operational realities that break APIs in production: idempotency for retried writes, rate limiting and quotas, consistent error responses that clients can act on, and deprecation processes that give consumers a real migration window.

Technologies we use

Key Features

• REST, GraphQL, and tRPC API design with the choice driven by consumers
• Resource modelling with consistent naming, filtering, and pagination
• OpenAPI and GraphQL schemas maintained as the source of truth
• Type safe client generation for frontend and partner consumers
• Authentication and authorisation design including scopes and permissions
• Versioning strategy with backward compatible evolution rules
• Idempotency keys for safe retries on write operations
• Consistent, machine readable error responses
• Rate limiting, quotas, and abuse protection
• Webhook design with signing, retries, and replay endpoints
• Contract testing so implementation cannot silently drift from the schema
• Interactive documentation with working examples
• Deprecation policy and consumer migration support
• Performance review covering N plus one queries and payload size