Amazon Seller API Node.js Integration

I have a custom-built application running on Node.js and I want it to communicate seamlessly with Amazon through the latest Selling Partner (Seller) API. The scope is focused on two concrete workflows: keeping my inventory levels in sync and automating order processing from the moment a purchase is placed to the point it is fully acknowledged on Amazon. You will connect the SP-API to my Node.js codebase, authenticate with OAuth/LWA, and expose clean functions or endpoints that: • Pull real-time inventory data from my app and push accurate stock updates back to Amazon • Fetch new orders, map them to my internal order model, and send confirmations, shipping updates, and tracking numbers as required I have no need for sales analytics right now, so the solution should stay lightweight and modular in case I expand later. Clear documentation and brief setup instructions must accompany the code so I can maintain or extend it in-house. The project is complete when inventory changes in my system are reflected on Amazon within a predictable interval and all new Amazon orders appear in my app with full lifecycle status updates, error handling, and logging verified in production.

Project ID: 40252256