Implement A2A Server

Build a fully compliant A2A server that handles JSON-RPC 2.0 requests, manages task lifecycle states, supports SSE streaming for real-time updates, and serves an Agent Card for discovery.

When to Use

• Implementing an agent that participates in multi-agent A2A workflows
• Building a backend for an Agent Card designed with design-a2a-agent-card
• Adding A2A protocol support to an existing agent or service
• Creating a reference A2A server implementation for testing
• Deploying an agent that must interoperate with other A2A-compliant agents

Inputs

• Required: Agent Card (JSON) defining the agent's skills and capabilities
• Required: Implementation language (TypeScript/Node.js or Python)
• Required: Task execution logic for each skill defined in the Agent Card
• Optional: Push notification webhook support (true or false)
• Optional: Persistent task store (in-memory, Redis, PostgreSQL)