API Design & Integration
API Design & Integration
RESTful APIs, GraphQL schemas, tRPC routers, gRPC services and third-party API integrations. Clean, documented, tested and versioned for long-term maintainability.
- $1,999
- Starting From
- 2–8 weeks
- Typical Timeline
- 40+
- Projects Shipped
- 98%
- On-time Delivery
What you get
Built for outcomes, not output
Any API style
REST (OpenAPI/Swagger), GraphQL (Apollo, Yoga, Relay), tRPC, gRPC, WebSocket, Server-Sent Events. We design the API architecture that fits your client and scale requirements.
Third-party integrations
Stripe, HubSpot, Salesforce, Slack, Twilio, SendGrid, Google Workspace, Microsoft 365, Shopify, WordPress, CRMs, ERPs and hundreds of SaaS services.
Authentication & security
JWT, OAuth 2.0, API keys, RBAC, rate limiting, input validation, CORS, CSP, dependency scanning. Every API is production-secure.
Versioned & documented
Semantic versioning, deprecation policies, changelog, interactive documentation (Swagger UI, GraphQL Playground). Your API is easy to consume.
Automated testing
Contract testing, integration testing, load testing, fuzz testing. Every endpoint is validated before deployment.
Real-time capabilities
WebSocket, Server-Sent Events, Socket.io, Pusher, Ably. Real-time notifications, live updates, collaborative editing, streaming data.
Process
How a api development project moves
- 01
API design & contracts
OpenAPI/GraphQL schema design, endpoint mapping, authentication model, rate limiting strategy, versioning approach.
- 02
Implementation
Build the API endpoints, resolvers, middleware, authentication, authorization, input validation, error handling.
- 03
Integrations
Connect third-party services, webhooks, payment processors, CRMs, ERPs, email providers, analytics.
- 04
Testing & documentation
Automated test suite, load testing, security audit, interactive documentation (Swagger/GraphQL Playground).
- 05
Deployment & monitoring
API gateway setup, caching, CDN, rate limiting, logging, monitoring, alerting, uptime checks.
- 06
Versioning & evolution
Deprecation strategy, versioning policy, changelog management, breaking change communication.
Deliverables
What ships at the end
Every api development engagement includes the following as standard. Nothing is hidden, nothing is upsold.
- Production-ready API (REST, GraphQL, tRPC or gRPC)
- OpenAPI/Swagger or GraphQL schema documentation
- Authentication & authorization layer
- Rate limiting & throttling
- Automated test suite (contract + integration)
- Load testing results
- Webhook system
- Third-party integrations
- API gateway configuration
- Monitoring & alerting setup
- Changelog & versioning documentation
- 30-day post-launch warranty
FAQ
Frequently asked questions
- 01REST vs GraphQL — which should I choose?
- REST for simple, cacheable APIs with well-defined resources. GraphQL for complex, nested data requirements where clients need flexible queries. tRPC for TypeScript-to-TypeScript full-stack apps with zero overhead. We help you choose based on your client needs, team expertise and scale requirements.
- 02How much does API development cost?
- A focused REST API: $1,999–$5,000. A full GraphQL API with integrations: $5,000–$20,000. A complex API gateway with multiple services: $15,000–$50,000+. Get a tailored quote.
- 03How long does API development take?
- A focused API: 2–4 weeks. An API with multiple integrations: 4–8 weeks. A complex API gateway: 8–16 weeks.
- 04Can you integrate with my existing APIs?
- Yes. We work with existing APIs, add new endpoints, optimize performance, add authentication, version and document. We meet your API where it is.
- 05Do you provide API documentation?
- Yes. Every API ships with OpenAPI/Swagger (REST) or GraphQL schema documentation with interactive playground. Your developers can explore and test every endpoint.
- 06Do you build real-time APIs?
- Yes. WebSocket, Server-Sent Events, Socket.io, Pusher, Ably. Real-time notifications, live dashboards, collaborative editing, streaming data.
Related Case Studies
How we've shipped api development.
- E-Commerce & DTC
Headless Shopify: 0.6s LCP, 34% conversion lift
Migrated a growing DTC skincare brand from WooCommerce to headless Shopify on Hydrogen. Page speed, conversion rate and LTV all jumped — and ChatGPT now recommends them by name.
Conversion: +34% - SaaS & B2B Software
Marketing site rebuilt for Google AND ChatGPT
Replatformed a B2B SaaS marketing site to Next.js, added Generative Engine Optimization, and built citation-tracking infrastructure. Now cited in ChatGPT and Perplexity for 47 commercial keywords.
Trial signups: +187% - Real Estate & PropTech
IDX real estate platform — 12K active listings
Built a real estate platform with IDX integration, advanced search, broker accounts and a custom CRM. SEO traffic 3.2x in 6 months.
SEO traffic: +220%
Ready to start your api development project?
Tell us about your goals. We reply within 24 hours with a tailored proposal — not a sales pitch. Or book a 30-minute free call to talk it through first.
30-minute free call · no pitch · no obligation