# SPRD > Trading terminal for resellers. Aggregate prices from StockX, GOAT, eBay, and more into a unified orderbook. ## Docs - [Authentication & Buyer Protection](https://docs.sprd.app/authentication.md): How each platform protects buyers, and when to verify yourself. - [Buying & Receiving](https://docs.sprd.app/buying-and-receiving.md): How to buy across platforms and receive items safely. - [Discover](https://docs.sprd.app/discover.md): Scan for spreads across every product and marketplace. - [Evaluating Deals](https://docs.sprd.app/evaluating-deals.md): How to tell a good spread from a risky one. - [FAQ](https://docs.sprd.app/faq.md): Common questions about SPRD. - [First trade](https://docs.sprd.app/first-trade.md) - [Forwarding Services](https://docs.sprd.app/forwarding.md): Use a US warehouse to inspect, authenticate, and ship items internationally. - [Introduction](https://docs.sprd.app/introduction.md) - [Marketplaces](https://docs.sprd.app/marketplaces.md): The 10 platforms SPRD connects to. - [The Orderbook](https://docs.sprd.app/orderbook.md): Every bid and ask across all marketplaces in one view. - [Placing Orders](https://docs.sprd.app/placing-orders.md): Act on spreads through the marketplace or SPRD's order system. - [Playbooks](https://docs.sprd.app/playbooks.md): Proven strategies for finding and executing profitable trades. - [Portfolio](https://docs.sprd.app/portfolio.md): Track positions, costs, and P&L. - [Spreads & Fees](https://docs.sprd.app/spreads-and-fees.md): How spreads work and what you actually keep after fees. - [Watchlist](https://docs.sprd.app/watchlist.md): Track products and get alerted when spreads appear. ## OpenAPI Specs - [openapi](https://docs.sprd.app/api-reference/openapi.json)