Handler

by alDuncanson · AI Agent Frameworks · ★ 46

Handler is an MCP server by alDuncanson. A2A protocol client for your terminal. It has 46 GitHub stars and ranks #298 of 604 in AI Agent Frameworks by stars.

Category: AI Agent Frameworks
Author: alDuncanson
GitHub stars: 46
This week: Tracking since 18 Oct 2026
Language: Python
License: GPL-3.0 (open source)
Last update: 2026-10-20 (4 days ago)
Links: Source Website PyPI

a2a
a2a-cli
a2a-client
a2a-protocol
a2a-server
adk
agent
agent-skills
ai
ai-agents
cli
litellm
+8 more

How to install Handler

Handler is published on PyPI as iflow-mcp_alduncanson-a2a-handler. These steps assume it runs as a local stdio server, which is the usual setup.

Check the README. Confirm the start command and note any API keys or environment variables it needs (pass them with -e KEY=value or an env block). You need uv for uvx.

Add it to Claude Code from a terminal:

claude mcp add Handler -- uvx iflow-mcp_alduncanson-a2a-handler

Or add it to Cursor or Claude Desktop in .cursor/mcp.json or claude_desktop_config.json:

{
  "mcpServers": {
    "Handler": {
      "command": "uvx",
      "args": [
        "iflow-mcp_alduncanson-a2a-handler"
      ]
    }
  }
}

Restart the client and check it. Run claude mcp list, or open the client's MCP settings, and confirm Handler and its tools are listed. The install guide covers VS Code and Codex.

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Frequently asked questions

What is Handler?

Handler is an MCP server by alDuncanson in the AI Agent Frameworks category. A2A protocol client for your terminal. It has 46 GitHub stars and ranks #298 of 604 in AI Agent Frameworks by stars. It is written in Python. It is licensed under GPL-3.0. It was last updated 4 days ago.

Is Handler free and open source?

Yes. Handler is published under the GPL-3.0 license, so you can run, modify and self-host it at no cost. If it connects to a paid service, that service's own pricing and API terms still apply. Check the repository for the exact license text before using it commercially.

What are the alternatives to Handler?

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Data last updated 25 October 2026. Stars and downloads are refreshed every day from GitHub and npm.