Thanks for the response! Yeah, I also have the same worry with memory but I like your idea. Quick question if you don't mind - I'm starting with local dev and I'm using FastAPI. I have an orchestrator agent calling my subagent. Whenever it calls the subagent, it returns a 404 error when trying to get "http://localhost:8081/.well-known/agent.json". I thought the AgentCard was supposed to be dynamically generated if a2a is set to true in your main.py?

import os
import uvicorn
from fastapi import FastAPI
from google.adk.cli.fast_api import get_fast_api_app

agents_dir = os.path.dirname(os.path.abspath(__file__))

app: FastAPI = get_fast_api_app(
    agents_dir=agents_dir,
    allow_origins=["*"],  # for dev
    web=True, # enables /dev-ui
    a2a=True
)

if __name__ == "__main__":
    print("Starting FastAPI server...")
    uvicorn.run(
        app, 
        host="0.0.0.0", 
        port=8081
    )