Reusable agents

[aakashjw]

How can I achieve something like this?

import asyncio
from mcp_agent.core.fastagent import FastAgent
from mcp_agent.llm.augmented_llm import RequestParams

from knowlege_center import knowlege_center_agent
from bug_traige import bug_triage_agent

fast = FastAgent("Router agent")

@fast.router(
    name="router_agent",
    agents=[knowledge_center_agent, bug_triage_agent],
    instruction="""
    Route request based on incoming user query
    """
)

I think the main advantage of these agents is to be reusable and I can reuse in whatever workflows without having to declare them all in a single file. But I am not sure how to achieve this in the current setup as all agents are tied to the FastAgent instance.
Is that doable today? If not could you consider this as a feature request?

[tomatte]

you can create a singleton for the fast instance and import it in a file to declare the agents and also import it in the main file to create and run the agent_app

[aakashjw]

I see, the problem though is I might need to reuse an agent in separate applications altogether, defining all the applications using one fast instance may not be the right solution, it will basically bloat at some point containing agents from multiple applications, what I am trying to say is, say that there is a Bug filing agent that takes care of filing bugs after filling in all necessary fields, this agent I might need in all of my other agentic workflows, where if anything goes wrong I call this agent to file a bug, I don't necessarily want to define all of my workflows under one fast instance where the bug filing agent is. I am not sure that is possible today?

[tomatte]

Got it. I was also looking for something like the fast.router and didn't find it as well. So you will probably need to find a workaround or open a PR to implement this feature. Let me know of your solution.