API Development

APIs for Every Integration — Web to Mobile

We design and build secure, documented, versioned APIs using REST, GraphQL, and WebSocket patterns — ready for any client to consume.

Trusted by
150+ clients
India
UK
US & Global
Free estimate

What are you building?

Tell us what you need — scope and estimate in 24 hours, free.

No commitment · 24-hour response

ReactNext.jsTypeScriptNode.jsPythonGoPostgreSQLKubernetesAWSAI / LLM SystemsReact NativeDockerReactNext.jsTypeScriptNode.jsPythonGoPostgreSQLKubernetesAWSAI / LLM SystemsReact NativeDocker
What We Build

API Development Services

01
🔌

REST APIs

CRUD-based resource APIs with proper status codes and error handling.

02
🔷

GraphQL APIs

Flexible query APIs with schema, resolvers, and subscriptions.

03

WebSocket APIs

Real-time bidirectional APIs for live data and chat.

04
🔒

Auth & Security

OAuth 2.0, JWT, API keys, rate limiting, and IP allowlisting.

05
📖

OpenAPI Docs

Swagger/Redoc auto-generated documentation with examples.

06
🔄

API Versioning

URL, header, and content-type versioning strategies.

Technical Depth

API Capabilities

🔌

Express & Fastify

Production-grade Node.js API frameworks.

🔷

Apollo Server

GraphQL with resolvers, dataloaders, and subscriptions.

🧪

Contract Testing

Pact and Dredd for API contract verification.

📊

Performance

Response caching, pagination, and database query optimisation.

🔒

Security

Input validation, SQL injection prevention, CORS, and CSP.

📈

Observability

Structured logging, tracing, and endpoint latency monitoring.

How We Work

API Development Process

01

Design-First

OpenAPI spec written and reviewed before any code is written.

02

Core Implementation

Endpoints, validation, auth, and error handling.

03

Testing

Unit, integration, and contract tests with 80%+ coverage.

04

Documentation & Deploy

Swagger docs, rate limits, and production deployment.

What you get
  • Figma design source files
  • Clean documented codebase
  • CI/CD pipeline
  • SEO and analytics setup
  • Performance report
Technology Stack

API Stack

Node.js
ExpressFastifyNestJSHono
GraphQL
Apollo ServerPothosHasura
Auth
JWTOAuth 2.0Passport.jsAuth0
Docs
Swagger UIRedocStoplightPostman
Why Choose Us

Why Digital Web Weaver for APIs?

📖

Design-First

API spec reviewed before coding — avoids expensive rework.

🔒

Secure by Default

Auth, rate limiting, and input validation on every endpoint.

🧪

Contract Tested

Consumer-driven contract tests prevent breaking changes.

📊

Observable

Every API ships with logging, tracing, and latency dashboards.

FAQ

API Development FAQ

REST for simple CRUD and mobile APIs. GraphQL when clients need flexible querying or you're building a data-heavy dashboard.
URL versioning (/v1/, /v2/) for public APIs. Header versioning for internal APIs. We document the upgrade path for each version.
Yes — we generate OpenAPI specs from existing codebases using swagger-autogen or manual annotation.
Rate limiting with Redis, API key management, IP allowlisting, and bot detection via middleware.

Build Your API

Secure, documented, and ready for any client.

Senior engineers only48-hr matchNo lock-in