UCP Checker & Agent Debugger is a specialized Chrome extension designed for monitoring Universal Commerce Protocol (UCP) manifests. This free tool provides instant detection of UCP manifests by probing the /.well-known/ucp endpoint on storefronts, displaying essential information like HTTP status, response time, and version metadata. Users can quickly access a canonical report for detailed insights, making it a valuable resource for developers and agencies involved in e-commerce platforms such as Shopify, BigCommerce, and Magento.

The extension features a zero-click workflow that simplifies the user experience: a green dot indicates UCP readiness, while a gray dot signifies non-detection. It also enhances visibility into robot and firewall accessibility, identifying whether AI bots can reach the store. With a focus on privacy, the tool crowdsources uptime statistics while ensuring that no personal data or browsing history is accessed. Designed for developers, growth teams, and AI platform teams, this extension streamlines the process of verifying storefront readiness.