Why We Ditched 6 APIs and Built One MCP Server for Our Entire Ecommerce Stack

The Problem with the "Best Tool for Each Job" Approach Every ecommerce business ends up with the same stack eventually: Shopify for storefront and orders HubSpot (or similar) for CRM ShipStation or Bosta for shipping Zendesk for customer support WhatsApp Business API for messaging Some spreadsheet for inventory Each tool is fine on its own. But when you want an AI agent to manage your business operations, you immediately hit a wall. The agent needs to: Get a list of today's orders (Shopify API) Check if the customer is a VIP (HubSpot API) Check stock availability (your warehouse system — maybe a spreadsheet?) Create a shipping label (ShipStation API) Message the customer with tracking (WhatsApp API) Log the interaction (back to HubSpot API) That's 5 different authentication setups , 5 different API schemas, 5 different rate limits, and 5 different failure modes — for one simple workflow. We built Nexus to solve this. Then we exposed it via a single MCP server. What Is MCP and Why Does