Student Builds AI Campus Marketplace to Replace Chaotic WhatsApp Trading Groups

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Ananya Raj, a second-year Computer Science student, developed Marketera, an AI-powered campus marketplace, as part of Google Cloud's Gen AI Academy APAC Cohort 3. The platform addresses the inefficiencies of campus trading conducted through unorganized WhatsApp and Telegram groups, which suffer from spam, poor search, and lack of structured filters. Marketera allows students to describe their needs in plain language, after which Google Gemini extracts constraints such as budget, item condition, and pickup location to find matching listings. The system queries a Google Cloud Firestore database, ranks results intelligently, and generates a conversational response explaining why each recommendation fits the buyer's needs. An automated moderation layer screens listings for spam, off-campus commercial posts, and inappropriate content before they go live.

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