Pentagon is a coordination layer and workspace that lets AI agents communicate, coordinate, and collaborate as teams. Its Pentagon Studio product offers a spatial canvas for visualizing agents, autonomous event-driven coordination, agent persistence with institutional memory, shared skills and tools management, and human-in-the-loop collaboration. Agents work autonomously while humans manage organizational structure and oversight. Pentagon is part of Y Combinator's Spring 2026 batch and was founded by Edgar Pavlovsky, previously of marginfi.