Custom API Development

Build powerful APIs for data intelligence

Custom-built APIs that seamlessly integrate web scraping and data intelligence into your applications — RESTful, GraphQL, and real-time endpoints tailored to your needs.

Build a Custom API View API Docs
API capabilities
REST
& GraphQL
4
Language SDKs
Real-time
WebSocket streaming
OAuth 2.0
Secure auth
API Solutions

API solutions we build

From simple REST endpoints to complex real-time streaming APIs, we build solutions that perfectly match your technical requirements.

RESTful APIs

Clean, well-documented REST APIs with standard HTTP methods, JSON responses, and comprehensive error handling.

  • Standard HTTP methods
  • JSON / XML responses
  • Rate limiting & throttling

GraphQL APIs

Flexible GraphQL endpoints that let clients request exactly the data they need with powerful query capabilities.

  • Flexible data querying
  • Type-safe schemas
  • Real-time subscriptions

Real-Time Streaming

WebSocket and Server-Sent Events for real-time data streaming with instant updates and live notifications.

  • WebSocket connections
  • Server-sent events
  • Connection management

Webhook Integration

Event-driven webhooks that automatically notify your systems when specific data changes occur.

  • Event-driven triggers
  • Retry mechanisms
  • Signature verification

Batch Processing APIs

Efficient bulk data processing with job queues, progress tracking, and asynchronous operations.

  • Bulk operations
  • Job queue management
  • Progress tracking & retry

Custom Integrations

Tailored API solutions that integrate seamlessly with your existing systems and workflow requirements.

  • System-specific designs
  • Legacy system support
  • Custom authentication
Documentation

API documentation & examples

Comprehensive documentation with real examples and interactive testing capabilities.

Product Intelligence API

Get comprehensive product data including pricing, availability, and competitor information.

MethodGET
Endpoint/api/v1/products/{id}
Response200 OK · JSON
ReturnsPrice, stock, competitors

Real-Time Alerts API

Set up custom alerts for price changes, stock updates, and other events.

MethodPOST
Endpoint/api/v1/alerts
Triggersprice_change, stock
DeliveryWebhook, email

Batch Data Processing

Process large datasets with asynchronous job handling and progress tracking.

MethodPOST
Endpoint/api/v1/jobs/batch-scrape
Response202 Accepted
TrackingProgress + result URLs

WebSocket Streaming

Real-time data streaming with instant updates and event notifications.

ProtocolWSS
Endpoint/api/v1/stream
Eventsprice_change, live
LatencyReal-time
SDKs & Tools

SDKs & integration tools

Get started quickly with our comprehensive SDKs and integration tools.

Python SDK

Full-featured Python library with async support.

Installpip install krawlx-python

Node.js SDK

TypeScript-first with a Promise-based API.

Installnpm install krawlx-js

Java SDK

Spring Boot integration with reactive streams.

BuildMaven / Gradle

HTTP Client

Standard HTTP requests from any language.

Clientscurl / fetch / axios
Process

API development process

From requirements gathering to production deployment, we follow industry best practices.

1

Requirements Analysis

Understanding your data needs, integration requirements, and performance expectations.

2

API Design

Creating detailed API specifications, data models, and endpoint documentation.

3

Development

Building robust APIs with proper error handling, validation, and security measures.

4

Testing & QA

Comprehensive unit tests, integration tests, and performance validation.

5

Deployment

Production deployment with monitoring, documentation, and ongoing support.

FAQ

Frequently asked questions

Common questions about our custom API development solutions.

Do you build GraphQL or REST APIs?
We build both. Our team recommends the best architecture based on your data consumption patterns. If you need highly specific, nested queries, we usually build GraphQL. If you prefer standard endpoint structures with high cacheability, we build RESTful APIs.
How do you handle API rate limits and security?
We secure all endpoints using OAuth 2.0 or secure JWT tokens. We implement strict rate limiting, IP whitelisting, and payload validation to protect against abuse and ensure high availability for your services.
Can your APIs integrate with our existing stack?
Yes. We design our custom APIs specifically to connect with your internal systems. Whether you use Node.js, Python, Java, or legacy systems, we create detailed documentation, SDKs, and data models to ensure seamless integration.

Ready to build your custom API?

Let's discuss your requirements and build an API solution that perfectly fits your needs — from simple REST endpoints to complex real-time systems.

Start an API Project Explore API Docs

Free consultation · Detailed documentation · Full SDK support