Question 1

What is the A2A MCP Server?

Accepted Answer

The A2A MCP Server bridges the Model Context Protocol (MCP) with the Agent-to-Agent (A2A) protocol, enabling MCP-compatible AI assistants (like Claude) to interact with A2A agents.

Question 2

What are the key features of the A2A MCP Server?

Accepted Answer

Key features include agent management (register, list, unregister), communication (send messages, stream responses), task management (track, retrieve, cancel), and transport support (stdio, streamable-http, SSE).

Question 3

What is MCP?

Accepted Answer

MCP (Model Context Protocol) is an open protocol that standardizes how applications provide context to LLMs.

Question 4

What is A2A?

Accepted Answer

A2A (Agent-to-Agent Protocol) enables communication and interoperability between different AI agents through a standardized JSON-RPC interface.

Question 5

How do I install the A2A MCP Server?

Accepted Answer

You can install it via Smithery or pip (`pip install a2a-mcp-server`) or by cloning the repository from GitHub and installing the dependencies.

Question 6

How do I configure the A2A MCP Server?

Accepted Answer

Configuration is done using environment variables such as `MCP_TRANSPORT`, `MCP_HOST`, and `MCP_PORT`.

Question 7

What transport types are supported?

Accepted Answer

The server supports stdio (default), streamable-http, and SSE transport types.

Question 8

How do I configure the server for Claude Desktop?

Accepted Answer

You need to modify the `claude_desktop_config.json` file and set `MCP_TRANSPORT` to `stdio`. Use the provided `config_creator.py` script to automate this process.

Question 9

How do I use the A2A MCP Server with Claude Web?

Accepted Answer

Start the MCP server with the streamable-http transport, enable the MCP URL connection in Claude's Tools menu, and use the server's URL (e.g., `http://127.0.0.1:8000/mcp`).

Question 10

What MCP tools are available?

Accepted Answer

Available tools include `register_agent`, `list_agents`, `unregister_agent`, `send_message`, `send_message_stream`, `get_task_result`, and `cancel_task`.

Question 11

How do I register an A2A agent?

Accepted Answer

Use the `register_agent` tool with the agent's URL.

Question 12

How do I send a message to an agent?

Accepted Answer

Use the `send_message` tool with the agent's URL and the message.

Question 13

How do I retrieve a task result?

Accepted Answer

Use the `get_task_result` tool with the task ID.

Question 14

What do I do if an agent can't be registered?

Accepted Answer

Verify the agent URL is correct and accessible and that the agent has a proper agent card at `/.well-known/agent.json`.

Question 15

What do I do if messages aren't being delivered?

Accepted Answer

Ensure the agent is registered (use `list_agents`) and that the agent is running and accessible.

Question 16

Where can I find the `claude_desktop_config.json` file?

Accepted Answer

- Windows: `%APPDATA%Claudeclaude_desktop_config.json`n- macOS: `~/Library/Application Support/Claude/claude_desktop_config.json`n- Linux: `~/.config/Claude/claude_desktop_config.json`

Question 17

What is UBOS?

Accepted Answer

UBOS is a Full-stack AI Agent Development Platform that helps you orchestrate AI Agents, connect them with your enterprise data, build custom AI Agents with your LLM model and Multi-Agent Systems.

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