京价保 - 京东价保助手 is a subscription-based Firefox extension designed for users of JD (Jingdong) that provides automated price monitoring for recent orders. The primary feature enables users to track price changes of items they have purchased, automatically applying for price protection when prices drop. Additionally, it offers a visual representation of price trends for items in the shopping cart, enhancing the shopping experience by ensuring users get the best deals.

Recent updates have addressed several issues, including fixing audio playback problems and removing outdated code, which improves overall performance. The extension also resolves automatic login issues for mobile web users, ensuring a seamless experience. With its focus on price protection and monitoring, 京价保 is a valuable tool for savvy shoppers looking to maximize savings.