Yuki

A macOS agent that actually remembers who you are. It includes a memory vault with semantic search and a nightly compaction routine that distills activity into durable facts, allowing conversations to pick up where they left off instead of starting from scratch.

Under the hood, it uses a ToolRAG system that loads only the tools relevant to the current task, along with a loop guard that fingerprints repeated actions to prevent runaway behavior. The application consists of a native Swift frontend communicating with a Python agent over a Unix socket. It uses the macOS Keychain for secure token storage, supports a global hotkey for instant access, and ships as a one-command Homebrew cask.