API, Webhooks & Integration Hub

Enterprise integration architecture covering REST and JSON-RPC endpoints, authentication tokens, webhook event subscriptions, n8n workflow triggers, and third-party payment gateway integration.

• API and Integration Hub Architecture Overview

  Architectural blueprint of the SmartERP Integration Hub, REST/JSON-RPC protocols, webhook event bus, and external microservice connectivity.

• JSON-RPC and RESTful API Architecture

  Deep dive into Odoo 19 JSON-RPC wire protocol, controller routing (type='json' vs type='http'), CORS headers, and payload serialization.

• API Authentication, Bearer Tokens, and Key Management

  Generating user API keys, Bearer token authentication headers, role-based API scope restrictions, and secret rotation policies.

• Webhook Subscriptions and Asynchronous Event Bus

  Configuring event subscriptions for record creation, modification, and deletion, asynchronous queue processing, and HMAC verification.

• n8n Workflow Automation and Low-Code Orchestration

  Building automated workflows connecting SmartERP with external SaaS apps, CRM pipelines, and notification bots using the n8n orchestrator.

• Telebirr SuperApp FinTech Payment Bridge Integration

  Implementing the Ethio Telecom Telebirr C2B/B2B payment bridge, dynamic QR generation, instant webhook callbacks, and invoice clearing.

• Chapa and Commercial Bank of Ethiopia (CBE) Gateways

  Integrating the Chapa payment orchestrator and CBE Birr banking rails for card payments, domestic transfers, and fee settlement.

• API Rate Limiting, Throttling, and Observability

  Protecting SmartERP endpoints using Redis rate limiters, token bucket algorithms, Prometheus metrics, and latency dashboards.

• Connecting External Microservices and Message Queues

  Architectural guidelines for bridging SmartERP with FastAPI/Flask microservices, Celery distributed tasks, and RabbitMQ event queues.

• Troubleshooting API, Webhook, and Network Failures

  Diagnostic trees for resolving HTTP 401 Unauthorized, webhook delivery timeouts, dropped FinTech callbacks, and JSON parsing errors.