We deliver expert API integration services and third-party API development that connect your website, app, or platform with any external service. From payment gateways to CRMs, ERPs, and custom REST APIs — our API integration services make your systems work together seamlessly with zero data loss.
From simple third-party API development to complex multi-system integrations.
Build secure, documented REST APIs as part of our third-party API development service — for your application or to expose your data to external systems.
Integrate any third-party API — payment, CRM, ERP, communication, or data services. Our API integration services cover 100+ platforms.
Real-time event-driven integrations using webhooks — a core part of our API integration services for instant data synchronization between platforms.
Synchronize data between platforms as part of our third-party API development service — CRM, ERP, eCommerce, and custom databases.
Secure your APIs with authentication, rate limiting, and encryption — security is built into every API integration service we deliver.
Complete API documentation with Swagger/OpenAPI specs and developer guides — included with every third-party API development project.
Structured approach to ensure reliable, maintainable third-party API integrations.
We map your systems, identify integration points, and define data flow requirements for our API integration services.
Integration architecture diagram, scope, and fixed-price quote for your third-party API development project.
We build and test API integrations in a staging environment with full error handling and logging.
End-to-end integration testing, edge case handling, and load testing before production deployment.
Production deployment with monitoring, full documentation, and ongoing API integration support.
Any business that needs their systems to communicate and work together.
Connect your store with inventory systems, shipping providers, and marketing platforms using our API integration services.
Build and expose APIs or integrate with the tools your customers already use through our third-party API development service.
Integrate legacy ERP and CRM systems with modern web applications using our enterprise API integration services.
We have delivered 100+ API integrations across every major platform and industry.
Every API integration service we deliver is built with OAuth, JWT, and input validation as standard — no shortcuts.
Every third-party API development project comes with complete technical documentation and Postman collections.
Robust error handling, retry logic, and monitoring so your API integrations never silently fail.
Most API integration services are delivered in 1-2 weeks with full testing included.
| Feature | TweakInfo | Freelancer | Agency | In-house |
|---|---|---|---|---|
| Security-First (OAuth/JWT) | ✓ | ✗ | ✓ | ✓ |
| Full API Documentation | ✓ | ✗ | ✗ | ✓ |
| Error Handling & Monitoring | ✓ | ✗ | ✗ | ✓ |
| Fixed-Price Guarantee | ✓ | ✗ | ✗ | ✗ |
| Post-Integration Support | ✓ | ✗ | ✓ | ✓ |
Transparent pricing for API integration services — based on complexity and number of endpoints.
Single third-party API, basic auth, standard endpoints — 1 week
Multi-system, custom data mapping, webhooks, full documentation
Full REST API with auth, rate limiting, docs, and admin panel
Flexible engagement models:
API integration services involve connecting two or more software systems so they can share data and functionality automatically. This eliminates manual data entry, reduces errors, and enables real-time synchronization between platforms.
Our API integration services cover any REST or GraphQL API. Common third-party API development projects include Stripe, PayPal, HubSpot, Salesforce, Twilio, SendGrid, Shopify, WooCommerce, QuickBooks, and hundreds more.
Yes. Our third-party API development service includes building custom RESTful and GraphQL APIs with authentication, rate limiting, versioning, and full Swagger/OpenAPI documentation.
We implement OAuth 2.0, JWT tokens, API keys, and HMAC signatures in all our API integration services — depending on the security requirements of each integration.
Yes. Our API integration services include connecting WordPress with HubSpot, Salesforce, Zoho, Pipedrive, and any CRM that has an API.
We build API integrations with error handling and monitoring. If an API changes, we update the integration as part of our maintenance plans.
Yes. Every third-party API development project includes Swagger/OpenAPI documentation, Postman collections, and developer guides.
Simple API integrations take 3-7 days. Complex multi-system integrations typically take 2-4 weeks. Custom API builds take 2-6 weeks depending on scope.
Yes. We build custom automation workflows using webhooks, scheduled jobs, and event-driven architecture — similar to Zapier but custom-built for your specific business needs.
Our API integration services start from $300 for a simple single-API integration and scale to $2,500+ for custom API builds. We provide a fixed-price quote after a free technical assessment.
Drop us a quick message and we'll get back to you within a few hours.
Tell us which platforms you need to integrate and get a free technical assessment within 24 hours.
