a2aproject/a2a-js

The A2A JavaScript SDK is a library for building agentic applications that follow the Agent2Agent (A2A) Protocol, enabling agents to communicate with each other using JSON-RPC, HTTP+JSON/REST, or gRPC transports. It provides tools for creating agent servers with `AgentExecutor` implementations, sending and receiving messages, handling tasks with artifacts and status updates, and supporting real-time streaming and push notifications for long-running operations. This SDK is designed for developers building interoperable AI agents or multi-agent systems that need to communicate across different platforms or services.