Show HN: Open-source Mac menu bar app for Claude, Codex and Cursor (agentmuster.app)

A new open-source Mac menu bar application called Muster has been announced, designed to streamline interactions with AI agents like Claude, Codex, and Cursor. This lightweight 2 MB AppKit app allows users to access and manage various AI sessions directly from their menu bar, displaying sessions from the last three hours along with details such as token usage and potential API costs. Users can quickly navigate between sessions using customizable keyboard shortcuts, making it easy to prioritize and respond to prompts. Muster's significance lies in its focus on user autonomy and transparency, as it does not require an account or analytics, ensuring privacy through local file handling over localhost. As an MIT-licensed project, developers have the freedom to inspect its code and contribute to its enhancements. The inclusion of built-in notifications and streamlined session management makes Muster a valuable tool for the AI/ML community, particularly for developers and researchers who rely on these advanced AI systems for coding and creative tasks.