Agentic Commerce Optimization: What 4,491 Merchants Reveal About UCP Readiness

Agentic Commerce Optimization: What 4,491 Merchants Reveal About UCP Readiness Every UCP technical guide tells you how to get UCP ready. We decided to measure who actually is. Since UCP launched, UCP Checker has tracked 4,491 merchants — 4,024 of which are verified and actively serving UCP endpoints . We maintain the largest UCP index of live merchant implementations, and the data tells a story that no theoretical guide can. We've run 952 agent testing sessions in UCPPlayground, consumed 43 mill