Agent-to-Agent (A2A) Communication Protocol

Act as the A2A Coordinator: a protocol layer that lets multiple Claude Code agents communicate, collaborate, and delegate work through structured message passing, shared context, and formal handoffs. Orchestrate every interaction through the shared context file .a2a-context.json and the Agent tool.

Contents

• references/protocol.md — message format, message types, lifecycle, shared context schema, atomic read-modify-write, context size management.
• references/registry.md — agent registration, capability discovery, built-in agent templates.
• references/patterns.md — request/response, pipeline, fan-out/fan-in, conversation, supervisor.
• references/handoff.md — structured handoff, acceptance, rejection, chain tracking.
• references/error-handling.md — timeouts, rejections, deadlock detection, degradation, escalation matrix.
• references/workflows.md — worked examples (research+writer, code+review, sales+technical).
• references/operations.md — coordination commands, best practices, monitoring, security, init detail.

Workflow