Xianyu SaaS runs all of your Xianyu (Goofish) shops from one self-hosted console, answering buyers with AI, delivering digital goods the moment orders verify, and keeping every store isolated in its own process. Add each shop by scanning a QR code in the Xianyu app, then switch between stores from one header while the overview tracks messages, replies, delivery results, orders, and pending tasks. The AI customer service center lets you pick a service persona, write shop-wide reply requirements in plain language, and maintain a separate knowledge entry for every product, covering audience, specifications, usage, delivery notes, and after-sales wording. Keyword rules answer the repetitive questions first, with product-specific rules outranking store-wide ones, and anything unmatched falls through to the AI with product knowledge and chat history in context. When a buyer pays, the system re-checks the platform order before delivering, drawing card keys one to fifty at a time from named pools, sending netdisk resources, or posting fixed text instructions, with a five-minute sweep catching orders missed while a shop was offline. A conversation workbench lets you search chats, take over from the AI with one click, send up to eight queued images, and jump from any order straight into the buyer's thread. A built-in operations agent manages a shop through chat, updating product knowledge, toggling reply rules, or binding delivery stock on request. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-3.0 licensed.