QM is a multiplayer agent harness designed for startups, allowing employees to work independently and collaboratively with an agent in various channels and projects. The agent has its own isolated workspace, memory, and permissions, and can be integrated with Slack and web apps. QM is built with open source in mind, allowing users to pick their own harness and model. The project has a unique contribution process, where contributors are asked to submit human-written text describing the change they'd like to make, rather than code.