handler

handler command [options]

handler is a client and developer toolkit for the A2A (Agent-to-Agent) Protocol, providing both a TUI and CLI interface for interacting with A2A-compliant agents. It allows developers to send messages, validate agents, manage tasks, and chat interactively with AI agents from the terminal.
The tool includes a built-in local A2A server agent (requires Ollama running locally) for testing and development purposes.

tui

Launch the interactive terminal user interface

Start the local A2A server agent

Send a message to an agent

Validate an A2A agent endpoint

Target agent URL

Message to send

Enable verbose output

Enable debug logging

The built-in server agent requires Ollama to be running locally. The A2A Protocol is relatively new and agent compatibility may vary across implementations.

handler was created by Al Duncanson and is written in Python. It was developed as a developer toolkit for Google's Agent-to-Agent (A2A) Protocol, which enables communication between AI agents from different frameworks.

curl(1)