Building JoyMux · Local Agent Runtime

JoyMux provides a robust local control layer for coding agents, ensuring persistent execution and efficient context management. Key features include: • Persistent execution sessions that survive terminal crashes • Replay missed outputs and resume agent tasks • Context shaping to reduce redundant information • Hard-reset functionality to restore previous states • Support for multiple coding agents on Mac and Linux This tool addresses the common frustrations developers face when working with coding agents, such as losing execution state after a crash or incurring higher token costs due to duplicated context. By offering a shared execution substrate, JoyMux allows agents to operate more reliably and efficiently, minimizing the need to restart tasks from scratch. It helps maintain a stable development environment, even when managing multiple agent interactions. JoyMux is designed for developers, programmers, and engineering teams utilizing various coding agents like Codex, Claude Code, and Gemini. It’s ideal for those who require durable execution, precise context control, and a calmer local machine during intensive development work, ensuring that valuable progress is never lost.