API Integrations
Connect any external software, SaaS platform, payment gateway, CRM, or cloud service. We build robust, rate-limited, fault-tolerant API pipelines, bidirectional webhooks, and custom SDK wrappers.
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- 100% Original, Clean & W3C/PSR Compliant Code
- Milestone-based Escrow & Revision Guarantee
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- Video Setup Walkthrough & Live Screen-Share Handover
Subcategories in API Integrations
Select any subcategory below to explore its 3 standardized pricing tiers (Starter, Professional, and Enterprise) tailored to your scope.
Payment Gateway Integration
Full integration with Stripe, PayPal, bKash, Razorpay, SSLCommerz, Apple Pay, and Google Pay with webhook signature verification.
Starter Scope
Single module or focused deliverable for Payment Gateway Integration.
- Single Gateway (Stripe/PayPal)
- Standard Checkout Flow
- Webhook Listener
- 2-Day Delivery
Complete Suite
Full end-to-end multi-feature solution with production polish & QA.
- Multi-Gateway System
- Recurring Subscriptions
- Auto-Refunds & Dispute Alerts
- 4-Day Delivery
Enterprise & Scale
Production architecture, test coverage, custom APIs & dedicated SLA.
- Global Multi-Currency Gateways
- PCI-DSS Compliance Audits
- Custom Billing Engine
- Priority SLA
Third-Party SaaS & CRM Sync
Bidirectional data synchronization with HubSpot, Salesforce, Zoho CRM, Google Workspace, Slack, Twilio SMS, and SendGrid.
Starter Scope
Single module or focused deliverable for Third-Party SaaS & CRM Sync.
- 1 SaaS Integration
- One-way Data Sync
- Error Logging
- 3-Day Delivery
Complete Suite
Full end-to-end multi-feature solution with production polish & QA.
- 2-3 SaaS Integrations
- Bidirectional Real-time Sync
- Retry Queue System
- 5-Day Delivery
Enterprise & Scale
Production architecture, test coverage, custom APIs & dedicated SLA.
- Full Enterprise CRM Pipeline
- Custom Middleware Hub
- Automated Reconciliation
- Priority Queue
Custom REST & GraphQL Endpoints
Design and implement secure RESTful and GraphQL APIs with JWT/Sanctum authentication, Postman collections, and Swagger docs.
Starter Scope
Single module or focused deliverable for Custom REST & GraphQL Endpoints.
- 5 CRUD Endpoints
- Token Auth
- Postman Collection
- 3-Day Delivery
Complete Suite
Full end-to-end multi-feature solution with production polish & QA.
- Up to 15 Endpoints
- Role-Based Permissions
- Swagger Docs & Pagination
- 5-Day Delivery
Enterprise & Scale
Production architecture, test coverage, custom APIs & dedicated SLA.
- Unlimited Endpoints
- GraphQL Schema & Resolvers
- Caching & Rate Limiting
- 7-Day Delivery
Webhook Automation & Event Pipelines
Event-driven webhook consumers and producers with HMAC-SHA256 signature verification, exponential backoff retries, and dead-letter queues.
Starter Scope
Single module or focused deliverable for Webhook Automation & Event Pipelines.
- Webhook Ingestion Handler
- HMAC Verification
- Basic Logger
- 2-Day Delivery
Complete Suite
Full end-to-end multi-feature solution with production polish & QA.
- Asynchronous Queue Pipeline
- Automatic Retries & Backoff
- Admin Event Inspector
- 4-Day Delivery
Enterprise & Scale
Production architecture, test coverage, custom APIs & dedicated SLA.
- High-Throughput Ingestion
- Kafka / Redis Stream Engine
- Multi-tenant Webhooks
- Priority Support
AI & LLM API Integration
Integrate OpenAI GPT-4, Google Gemini, Anthropic Claude, LangChain, Pinecone vector databases, and real-time streaming LLM responses.
Starter Scope
Single module or focused deliverable for AI & LLM API Integration.
- Single LLM API Integration
- Prompt Optimization
- Response Parser
- 3-Day Delivery
Complete Suite
Full end-to-end multi-feature solution with production polish & QA.
- RAG System + Vector Search
- Streaming Chatbot UI
- Cost & Token Guardrails
- 5-Day Delivery
Enterprise & Scale
Production architecture, test coverage, custom APIs & dedicated SLA.
- Multi-Model Orchestration
- Custom Fine-Tuning Pipeline
- Enterprise Agent Workflow
- Priority SLA