Show HN: CardGo – Reusable, end-to-end encrypted context cards for AI chats (cardgo.ai)

CardGo has launched a Chrome extension designed to enhance AI chat experiences by allowing users to create reusable, end-to-end encrypted context cards. This tool enables users to store important information—such as their role, goals, and preferences—and seamlessly integrate it into various AI chat platforms like ChatGPT, Claude, and Gemini. The fundamental aim of CardGo is to facilitate personalized interactions by sharing only the relevant context for each conversation, while ensuring that sensitive information remains secure. This solution is particularly significant for the AI/ML community as it addresses two critical challenges: maintaining user privacy and streamlining interactions across multiple AI platforms. By employing AES-256-GCM encryption, CardGo protects users’ data by ensuring that it is locked on their device and only shared when explicitly attached to a conversation. Users can filter sensitive details before sharing, maintaining control over what information is disclosed to the AI. With plans for a dedicated desktop app and a mobile keyboard extension in the pipeline, CardGo promises to enhance the capabilities of AI interfaces, making them more intuitive and secure for everyday use.