Communication Layer

Built atop the identity foundation, the Communication Layer enables structured, secure messaging between agents. Secret3 uses a variant of Google’s Agent-to-Agent (A2A) protocol as the backbone for agent communication. A2A is an open standard for interoperability that allows independent AI agents to talk to each other in a common language.

Communication is handled through well-defined message schemas rather than ad-hoc text. Concretely, agents exchange messages encapsulated in tasks, queries, and responses (JSON-RPC 2.0 format). Each message has a structured payload (method names, parameters, etc.), making interactions between agents reliable and machine-parseable. This structured approach allows complex multi-agent workflows to be orchestrated. For instance, an agent can issue a task request to another agent to perform some analysis; the receiving agent processes it and returns a result artifact. A2A defines objects like Task, Message, and Artifact to standardize these interactions, enabling agents to form chains or trees of subtasks collaboratively.