a2a

[jmoreno45]

Adds A2A capability with some example agents.

python examples/a2a_table_mcp_server.py --port 9101 &
python examples/a2a_average_mcp_server.py --port 9102 &
python examples/a2a_langchain_agent.py --port 9111 --config configs/example_a2a_agents.json --mcp-url http://localhost:9101/mcp &
python examples/a2a_google_adk_agent.py --port 9112 --config configs/example_a2a_agents.json --mcp-url http://localhost:9102/mcp &
mada-cli configs/example_a2a_agents.json
mada-gradio /g/g20/moreno45/Projects/GITHUB-MADA/mada/configs/example_a2a_agents.json

Can also be exposed as an A2A agent

Run MADA in A2A mode on the same port advertised in the card:

mada-a2a --port 9120 /g/g20/moreno45/Projects/GITHUB-MADA/mada/configs/example_a2a_agents.json

Other A2A agents can discover it at:

http://localhost:9120/.well-known/agent-card.json

If another machine/agent needs to reach it, use --public-url with the externally reachable URL:

mada-a2a --port 9120 --public-url http://hostname:9120/ /g/g20/moreno45/Projects/GITHUB-MADA/mada/configs/example_a2a_agents.json

CLI

Initializing agents and MCP servers...
Status: Connection Successful: Orchestrator initialized with 0 MCP Servers and 2 remote A2A agents and 3 agents
Orchestration mode: agent-as-tool
Model: gpt-5.4 from livai

Available tools:
   • A2A: LangChainAgent - Table reader specialist that can load and display a small built-in CSV table by calling its MCP table-reader tool.
   • A2A: GoogleADKAgent - Column average specialist that can compute averages for numeric columns in a small built-in CSV table by calling its MCP average tool.

Chat with the agents (type 'quit' to exit)
--------------------------------------------------
 
You: load table

Agents:
--------------------
[task-1] Started in background.


[task-1] Completed:

[Calling: call_langchainagent]
Loaded table:

| experiment | temperature_c | pressure_kpa |
|---|---:|---:|
| alpha | 21.2 | 101.3 |
| beta | 24.8 | 99.8 |
| gamma | 19.6 | 103.1 |
| delta | 22.4 | 100.6 |

 
You: average table

Agents:
--------------------
[task-2] Started in background.


[task-2] Completed:

[Calling: call_googleadkagent]
Column averages:

- temperature_c: 22.00
- pressure_kpa: 101.20

 
You:

Gradio

[bgunnar5]

If another machine/agent needs to reach it, use --public-url with the externally reachable URL:

mada-a2a --port 9120 --public-url http://hostname:9120/ /g/g20/moreno45/Projects/GITHUB-MADA/mada/configs/example_a2a_agents.json

Haven't looked at any of the code here yet but this sounds like it would be a perfect use-case for Wormhole.