zeph-a2a

A2A protocol client and server with agent discovery for Zeph.

Overview

Implements the Agent-to-Agent (A2A) protocol over JSON-RPC 2.0, enabling Zeph to discover, communicate with, and delegate tasks to remote agents. Feature-gated behind a2a; the server component requires the server sub-feature.

Key Modules

• client — A2aClient for sending tasks and messages to remote agents
• server — A2aServer exposing an A2A-compliant endpoint with ProcessorEvent streaming via mpsc::Sender (requires server feature)
• card — AgentCardBuilder for constructing agent capability cards
• discovery — AgentRegistry for agent lookup and registration
• jsonrpc — JSON-RPC 2.0 request/response types
• types — shared protocol types (Task, Message, Artifact, etc.)
• error — A2aError error types

Installation

cargo add zeph-a2a

Enabled via the a2a feature flag on the root zeph crate.

License

MIT