What it is: UCP Checker scans and monitors a growing pool of 3,200+ merchant stores for Universal Commerce Protocol compliance — the open spec by Google and Shopify that lets AI agents discover, browse, and purchase from stores autonomously.
Why: AI shopping agents need to know which stores are ready. We validate manifests, track uptime, test agent checkout flows, and just completed the first fully autonomous AI agent purchase through UCP — real store, real money, no human after "proceed."
Link: ucpchecker.com
Full writeup on the autonomous purchase: ucpchecker.com/blog/first-autonomous-ai-agent-purchase-ucp
Hensiid
UCP Checker is a tool that scans 3,200+ online stores to verify if they are ready for AI agent–based automated shopping (UCP standard), and it has successfully completed the first fully autonomous AI purchase.