Coral Protocol is an open and distributed collaboration infrastructure that enables communication, coordination, trust, and payments between agents in a diverse AI agent environment with increasing interoperability. It addresses the need for interoperability that arises when multiple specialized AI agents across domains and vendors need to work together. As the foundational platform for a multi-agent AI ecosystem, Coral builds a common language and coordination framework that allows all agents to participate in complex workflows with other agents. It emphasizes broad compatibility, security, and vendor neutrality to ensure efficient and reliable interactions between agents. In particular, it introduces a standardized messaging format for agent communication, a modular coordination mechanism for coordinating multi-agent tasks, and a secure teaming capability for dynamically forming trusted agent groups. With these innovations, Coral Protocol is positioned as the cornerstone of a new “Internet of Agents” that will enable new levels of automation, collective intelligence, and business value through open agent collaboration.