Why Shopper
A real engine, not a bolted-on MCP
The shopping MCPs bolted onto LLM providers are stateless link dumps: one partner catalog, no lists, no watching, no wallet. Shopper is the engine underneath your agents: web-wide hunts, vetted sellers, structured shared state, Radar watching 24/7, and x402 so agents pay their own way.
The whole web, not one catalog
A bolted-on shopping MCP searches whoever its provider has a deal with. Shopper hunts across marketplaces, storefronts, and local sellers at once, and gives your agent a real browser session for the forums and js-heavy sites a plain search cannot reach.
Vetted sellers, not just links
Every seller behind a find is checked against GLEIF, Companies House, and SEC EDGAR, so 'found it cheaper' comes with 'and here is who is actually selling it'.
Shared state, not a fresh chat
Bolted-on MCPs forget everything between calls. Shopper gives every connected agent the same structured state: wish list, shopping lists, About You, and long-term memory. Connect five agents; they work one truth, and you own it, exportable, never resold.
It watches, and it can pay
A stateless MCP stops when the call ends. Radar keeps standing scans running 24/7 on paid plans, and over x402 your agent can buy its own credits and plans with USDC, capped by what you fund. No bolted-on MCP has a wallet.