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API & Integration
API Development & Integration
Full-service API development and integration. We design, build, and integrate RESTful and GraphQL APIs that power modern applications and connect systems.
Get Started99.9%
API Uptime
<50ms
Avg Latency
100%
API Documentation
REST & GraphQL
Protocols
Service Category
API Engineering
Ideal For
Companies building or improving APIs that power applications, connect systems, and enable partner integrations.
Timeline
3 – 8 weeks
Why Choose MicrocosmWorks for API Development?
APIs are the backbone of modern software — connecting frontends to backends, services to services, and products to partners. We build APIs that are fast, well-documented, versioned, and designed to evolve. Our APIs follow industry best practices for security, pagination, error handling, and developer experience.
Our API Development Capabilities
- API Design — Design RESTful or GraphQL APIs with proper resource modeling, versioning strategy, pagination, and error response conventions.
- Implementation — Build APIs with proper authentication (JWT, OAuth, API keys), rate limiting, request validation, and comprehensive error handling.
- Documentation — Generate interactive API documentation with OpenAPI/Swagger that developers love using, including code samples and sandbox testing.
- Integration Development — Connect with third-party APIs and services with proper error handling, retry logic, circuit breakers, and monitoring.
- API Gateway — Set up API gateways for routing, rate limiting, authentication, and analytics across your API portfolio.
- Versioning & Evolution — Implement API versioning strategies that allow evolution without breaking existing clients.
Technology Stack
We build APIs with Node.js (Express, Fastify, NestJS), Python (FastAPI, Django REST), or Go depending on performance needs. API documentation with OpenAPI/Swagger, testing with Postman and automated suites, and monitoring with DataDog or custom dashboards.
Who This Is For
Companies building public or internal APIs, integrating with third-party services, or modernizing legacy system interfaces. Whether you need a new API from scratch, want to improve an existing one, or need to integrate with partner systems, we deliver APIs that work reliably.
Our Process
1
API Design
Define resources, endpoints, authentication, versioning, and error handling conventions.
2
Contract Definition
Write OpenAPI specification, define request/response schemas, and create mock servers.
3
Implementation
Build API endpoints, implement business logic, add validation, and set up authentication.
4
Testing & Documentation
Write API tests, generate interactive docs, and create developer guides with code samples.
5
Deployment & Monitoring
Deploy with rate limiting, set up API analytics, and establish performance monitoring.
Technology Stack
Frameworks
ExpressFastAPINestJSFastifyGo Chi
Protocols
RESTGraphQLgRPCWebSocketSSE
Documentation
OpenAPISwagger UIPostmanRedoc
Infrastructure
API GatewayRate LimitingOAuthJWT
Industries We Serve
SaaSFinTechE-CommerceHealthcareEnterpriseMarketplace
Ready to Build Great APIs?
Let's design and build APIs that developers love using and businesses rely on.
Frequently Asked Questions
We provide end-to-end API development including REST and GraphQL API design, microservice communication, third-party integrations, API gateway configuration, authentication, rate limiting, and comprehensive API documentation.
Our API development and integration services range from $15-$45/hour depending on the technology stack, integration complexity, and security requirements of your project.
Yes, we follow API-first design principles where the API contract is defined before implementation using OpenAPI or GraphQL SDL. This ensures consistent interfaces, enables parallel frontend and backend development, and produces auto-generated documentation.
We implement industry-standard authentication flows including OAuth2, JWT, API keys, and mutual TLS depending on your use case. Authorization is handled through RBAC, ABAC, or scope-based permissions integrated with your identity provider.
Yes, we write comprehensive API tests using tools like Postman, Jest, or pytest, set up contract testing with Pact, and configure uptime monitoring with alerting to ensure your APIs remain reliable after deployment.