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a2a-server

Implement an A2A server handling JSON-RPC requests and task states.

35|16|Updated Mar 4, 2026
Search Tags:#task management#agent#protocol#server#json-rpc#a2a
One-click install
npx skills add https://github.com/OrcaQubits/agentic-commerce-claude-plugins --skill a2a-server
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: a2a-server
Source: https://github.com/OrcaQubits/agentic-commerce-claude-plugins/tree/main/a2a-multi-agent/skills/a2a-server
Command: npx skills add https://github.com/OrcaQubits/agentic-commerce-claude-plugins --skill a2a-server

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides the necessary guidance and structure to build the server-side component of an Agent-to-Agent (A2A) communication system, enabling agents to receive, process, and respond to tasks.

Core Features & Use Cases

  • JSON-RPC Handling: Implements the server endpoint to accept and process JSON-RPC 2.0 requests.
  • Task State Management: Manages the lifecycle of tasks, from submission to completion or failure.
  • Agent Card Serving: Exposes the agent's capabilities via the standard Agent Card endpoint.
  • Use Case: Develop a customer support agent that can receive task requests via A2A, process them using an LLM, and return structured responses, all while maintaining the state of each ongoing conversation.

Quick Start

Use the a2a-server skill to implement the server side of an A2A agent by fetching live documentation and following the handler pattern.

Frequently Asked Questions about a2a-server

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build an A2A server to receive JSON-RPC requests?▼

Building an A2A server involves creating an agent-side endpoint that accepts JSON-RPC 2.0 requests, manages task states, and executes agent logic. You implement a handler pattern to process incoming tasks and return structured responses for agent communication.

What is task state management in an A2A agent server?▼

Task state management in an A2A server handles the lifecycle of tasks from submission through completion or failure. It ensures the server maintains the state of ongoing conversations and processes requests robustly.

How does an A2A server expose its capabilities to other agents?▼

An A2A server exposes its capabilities by serving an Agent Card through a standard endpoint. This mechanism allows other agents to discover available services and submit tasks accordingly.

What concurrency best practices should I follow when implementing an A2A server?▼

When implementing an A2A server, concurrency best practices ensure robust agent communication while managing multiple task states and processing JSON-RPC requests. These guidelines help handle simultaneous ongoing conversations safely.

Can I use an A2A server for a customer support agent that maintains conversation state?▼

Yes, an A2A server can power a customer support agent. It receives task requests via A2A, processes them using an LLM, and returns structured responses while maintaining the state of each ongoing conversation.

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