REST API Design
Resource modeling, endpoint design, and contract definition for RESTful APIs.
API Development
Design and build a new REST or GraphQL API from scratch: resource modeling, authentication, versioning, rate limiting, and documentation, so it's usable by your own frontend and by outside developers or partners from day one. This is new API design and delivery, distinct from API Optimisation, which improves the performance of an API you already have running in production.
2-3 Weeks
Typical Delivery
OpenAPI 3.0
Documentation Standard
Building APIs That Are Ready for Real Consumers
1
API Design & Modeling
- Resource modeling and endpoint design for REST, or schema design for GraphQL
- Consistent naming conventions and request/response contract design
- Standardised error format (RFC 7807 problem details or an equivalent convention)
- Pagination strategy chosen upfront: offset-based for simplicity or cursor-based for large, changing datasets
2
Authentication & Authorization
- API key issuance and rotation for machine-to-machine consumers
- OAuth 2.0 or JWT-based auth flows for user-facing or partner access
- Scoped permissions so third-party consumers only access what they're authorized for
- Service-to-service auth (signed tokens or mTLS) for internal microservice calls where relevant
3
Versioning & Backward Compatibility
- URI or header-based versioning strategy decided upfront, not retrofitted
- Deprecation policy with sunset headers and a documented removal window
- Contract tests that fail the build if a change breaks an existing consumer
- Changelog maintained alongside the API, not as an afterthought
4
Rate Limiting & Abuse Protection
- Per-key or per-IP rate limiting with tiered limits for free vs. paid consumers
- 429 responses with Retry-After headers so well-behaved clients back off correctly
- Request throttling and queuing for burst traffic
- Anomaly monitoring for abuse patterns (credential stuffing, scraping)
5
Documentation & Developer Experience
- OpenAPI 3.0 spec (or GraphQL schema with introspection) generated from the actual implementation
- Interactive documentation via Swagger UI, Redoc, or GraphQL Playground
- Example requests and a Postman collection or SDK stub for common languages
- Onboarding guide for external developers, not just internal reference docs
6
Testing & Reliability
- Contract and integration test suite covering core endpoints and edge cases
- Load testing on endpoints expected to see meaningful concurrent traffic
- Staging environment with realistic fixtures for partner testing before go-live
- Error rate and latency monitoring wired up before launch, not added after the first incident
API Development Services
From design to documented, tested delivery
GraphQL Schema Design
Type-safe schema design for clients that need flexible, relational queries.
Auth & Authorization
API key, OAuth 2.0, and JWT-based auth with scoped permissions.
Versioning Strategy
Versioning and deprecation policy that protects existing consumers.
Rate Limiting & Throttling
Tiered limits and abuse protection for public or partner-facing endpoints.
OpenAPI Documentation
Interactive, always-current docs generated from the real implementation.
Contract & Integration Testing
Automated tests that catch breaking changes before consumers do.
Webhook & Event Design
Outbound event delivery for APIs that need to notify consumers of changes.
How We Approach API Development
Contract-First Design
We write the API contract, OpenAPI spec or GraphQL schema, before implementation, so frontend work and partner integrations can proceed against a stable spec while the backend is still being built.
Versioned From v1
Every API ships with a versioning and deprecation policy from the first release, not retrofitted after a breaking change already frustrated a consumer.
Documentation You Can Hand to a Partner
Interactive docs and a working Postman collection or SDK stub, not just a README that goes stale after the first schema change.
Built for External Consumers, Not Just Your Own Frontend
Rate limiting, scoped auth, and standardised error contracts, so the API is safe to expose to outside developers, not only the client you wrote it for.
How We Approach API Development
Contract-First Design
We write the API contract, OpenAPI spec or GraphQL schema, before implementation, so frontend work and partner integrations can proceed against a stable spec while the backend is still being built.
Versioned From v1
Every API ships with a versioning and deprecation policy from the first release, not retrofitted after a breaking change already frustrated a consumer.
Documentation You Can Hand to a Partner
Interactive docs and a working Postman collection or SDK stub, not just a README that goes stale after the first schema change.
Built for External Consumers, Not Just Your Own Frontend
Rate limiting, scoped auth, and standardised error contracts, so the API is safe to expose to outside developers, not only the client you wrote it for.
API Development FAQ
It depends on how your consumers use the data. REST is the better default for public or simple resource-oriented APIs: it's easier to cache, has the broadest tooling support, and is what most third-party developers expect. GraphQL earns its complexity when clients need to query flexibly across many related resources and would otherwise need several REST round-trips or receive far more data than they use. We recommend based on your actual consumers, not by default.
API Development designs and builds a new API from scratch. API Optimisation improves the performance, response time, throughput, cost, of an API you already have running in production. If you don't have an API yet, or you're building a new one alongside an existing product, this is the right service.
Yes. Every API we build ships with an OpenAPI 3.0 spec, or a GraphQL schema with introspection enabled, plus interactive documentation through Swagger UI, Redoc, or GraphQL Playground. Documentation is generated from the real implementation so it doesn't drift out of date.
For public APIs consumed by third parties, we default to URI versioning (/v1/), since it's the most explicit and cache-friendly approach. For internal APIs where all consumers are on the same deploy cycle, header-based versioning is often lighter-weight. Deprecated versions get a documented sunset window before removal, communicated via headers and changelog.
Yes. We implement API key issuance or OAuth 2.0 client-credentials flows with scoped permissions, so each partner only accesses the resources they're authorized for, and keys can be rotated or revoked independently.
Trusted by Global Companies Building AI Products
We've helped startups and enterprises worldwide transform their AI ideas into production-ready MVPs in 2–3 weeks. From fintech platforms to AI assistants, our global MVP development services have launched 18+ AI products serving users across the US, Europe, and Asia.
Portfolio: AI Products Built for Global Startups
From content platforms and AI assistants to analytics dashboards and fintech solutions: see how we've transformed ideas into production-ready MVPs in 2-3 weeks across diverse industries. Each product launched successfully, serving users globally.
UseArticle
AI-powered content creation and management platform that helps teams produce high-quality articles at scale.
AgentHi
Intelligent virtual assistant that streamlines customer support and automates routine business tasks.
StatsHub
Comprehensive analytics dashboard providing real-time insights and data visualization for businesses.
Harimaxx
Personal fitness companion with AI-driven workout plans and nutrition tracking for optimal health.
Vaga
Smart travel planning app that curates personalized itineraries and local experiences.
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Nutrition analysis app that scans food items and provides detailed nutritional information instantly.
MyJobReach
Job matching platform connecting talented professionals with their dream opportunities.
TravelGram
Social platform for travelers to share experiences, discover destinations, and connect globally.
SuperStatz
Advanced sports statistics platform delivering in-depth analysis and performance metrics.
Cashbook
Simple expense tracking and budgeting app that helps users manage their finances effortlessly.
TypeFast
Typing speed improvement platform with gamified lessons and real-time performance tracking.
Easy Loan
Streamlined loan management system that simplifies borrowing and lending processes.
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