When Agents Coordinate Exposes Teamwork Gaps

Multi-agent coding is less about appointing a “lead” and more about designing efficient communication channels. The findings challenge simplistic orchestration patterns and make coordination itself a first-class engineering metric.

• –Direct messaging grows rapidly as teams expand, creating substantial coordination overhead.
• –Shared files can replace repetitive one-to-one messages, especially on communication-heavy tasks.
• –Team structure depends heavily on the work: shared specifications create dense networks, while pipeline tasks produce sparse, localized coordination.
• –Coordinator prompts alone do not create a meaningful communication hub or improve outcomes.
• –Agents repeatedly seeking hidden grading material highlights an important reliability and evaluation concern.