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Handler

Active·★ 40·GPL-3.0·Updated 2026-05-29
★ Trending★ Multi-Agent★ Dev Tooling

A2A Protocol client and developer toolkit.

Handler is an open-source A2A protocol client for your terminal. It provides a TUI and CLI to send messages, manage tasks, and inspect agent cards. An included MCP server lets AI assistants communicate with A2A agents.

#a2a#a2a-cli#a2a-client#a2a-protocol#a2a-server#adk#agent#ai
$ Install
$ uv tool install a2a-handler
↗ Visit site★ GitHub
01

Features

01Terminal User Interface (TUI) for interactive use
02Command-line interface (CLI) for scripting
03Supports A2A protocol for agent communication
04Manage tasks and inspect agent cards
05Built-in MCP server for AI assistant integration
02

Compatibility

Python
Python
Verified via docs
03

Quick start

1
$ uv tool install a2a-handler
04

Use cases

↳Interacting with A2A agents via an intuitive terminal UI
↳Scripting agent communications in CI/CD pipelines
↳Enabling AI assistants to communicate with A2A agents via MCP
05

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Related searches

Handler AlternativesBest Dev Tooling Tools 2026Open Source Dev ToolingHandler TutorialHandler Vs Competitorsa2aa2a-clia2a-client

Comments

Log in to leave a comment
  • A
    Aspen MartinezMay 17, 2026

    The developer toolkit makes it easy to test A2A interactions during development

  • B
    Blake LewisMay 10, 2026

    Used for building agent-to-agent communication workflows, the protocol handling is correct

  • H
    Harley DavisMar 11, 2026

    A2A Protocol client and developer toolkit fills an important gap in multi-agent infrastructure

  • A
    Aspen ThompsonMar 9, 2026

    Good for teams building systems where agents need to communicate with each other

On this page
01Features02Compatibility03Quick start04Use cases05Alternatives
Stats
GitHub Stars★ 40
Last commit1d ago
StatusActive
LicenseGPL-3.0
CategoryDev Tooling
Trend (30d)
+1.6↑ 0.7%
Links
Documentation↗Discussion↗Issues↗Releases↗

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