I will a multi marketplace seller command center with custom backend

Running 5+ stores across multiple marketplaces and still living in browser tabs and spreadsheets? You're losing 10-15 hours a week to context switching and missing real money pricing dips, compliance flags, inventory imbalances until they cost you serious revenue.

I build the platform I use to run my own multi-marketplace operation: a unified seller command center that consolidates 100,000+ product listings across multiple marketplaces into one dashboard.

Built for serious sellers operating on major marketplaces like Amazon, eBay, Walmart, Etsy, Shopify, or any marketplace with a public merchant API.

Core modules:

Unified API Layer Centralized integration hub that handles auth tokens, rate limiting, retry logic, and caching for every marketplace API your stores connect to. Your microservices talk to this layer, not the marketplace APIs directly. Cleaner architecture, fewer outages, better observability.

Multi-marketplace dashboard Single screen for all your stores. Disbursements, competitive pricing health, inventory levels, account health metrics across US/UK/CA/MX/AU and beyond.

Compliance scanner Automated detection of regulated products (hazmat, batteries, age-restricted)