Launch HN: Skillsync (YC W26) – AI chat sessions made portable across agents

Skillsync (YC W26) enables portability of AI chat sessions across various agents, allowing users to seamlessly migrate conversations. Users like Anshul Paul and Dennis Sun highlight its ease of use for transferring sessions from platforms like Cursor to Pi or Claude Code. Pratik Satija noted moving 7 GB of sessions in minutes. Shipra Jha appreciates the ability to continue Claude chats without re-explaining context. Abhijjith Venkateshraj uses Skillsync to build decision traces, holding agents accountable by reviewing their choices and reasoning.