Open Envelope – an open schema for defining AI agent teams

Open Envelope is an open JSON Schema for defining AI agent teams, enabling developers to specify roles, handoffs, and human checkpoints in a framework-agnostic format. It targets engineers building multi-agent systems who need a portable, shared standard to describe team structures across different implementations. This is interesting because it addresses the growing need for interoperability in multi-agent deployments, moving beyond single assistants to collaborative, structured agent teams.