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Custom API Integration HelpSeamless Cross-Platform Connectivity.
Third-party APIs not responding? I integrate Stripe, Google Maps, OpenWeather, or any custom API into your project with full error handling.
The Challenge
API keys leaking to the frontend? Responses returning undefined?
CORS Blocking Everything
Your frontend fetch calls are blocked by CORS policy, proxy setup isn't working, and preflight requests return 403.
Response Shape Mismatch
The API returns nested JSON you can't parse, pagination cursors you don't understand, and rate limits you keep hitting.
Secret Key Exposure
API keys hardcoded in client-side code, .env files not being read, and Vercel environment variables returning undefined.
Webhook Failures
Stripe webhooks not reaching your endpoint, signature verification failing, and event handling creating duplicate records.
Real API Integration Project Examples
Recent systems and components we have rescued or built from scratch.
Stripe Webhook Idempotency
Built a robust Node.js webhook handler for Stripe events, implementing idempotency keys to ensure users were never double-charged during network timeouts.
Legacy SOAP to REST Proxy
Created an intermediary Express server to parse ancient XML SOAP responses from a university API and serve them as clean JSON to a modern React frontend.
Targeted API Integration Support
I build secure API integration layers with proper secret management, response transformation, retry logic, and webhook handlers that process events exactly once.
- Third-Party API Hookups
- Custom Middleware Development
- Response Mapping & Transformation
- Error Boundary Implementation
- API Performance Scaling
Investment
Fixed Estimates
Price varies by urgency and complexity. Send your task details for a custom quote in minutes.
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Frequently Asked Questions about API Integration
How do you fix CORS errors on frontend fetch calls?
Quick Answer: We configure your backend to return the correct Access-Control-Allow-Origin headers, or implement a Next.js API route proxy to securely forward requests without exposing client-side CORS issues.
Can you secure my API keys so they do not leak to GitHub?
Quick Answer: Yes. We remove exposed keys, implement proper .env variable loading using NEXT_PUBLIC prefixes correctly, and setup backend-only proxy routes for sensitive third-party API calls like Stripe.