Packaging and running agents in proprietary environment

[antonpibm]

Hi everyone, after implementing an agent I want to (1) run it locally as a server, and (2) package it as an image and run it on my server. I prefer the server would be a remote MCP server.
So at each one of the two steps I want to contact the agent with HTTP request, hopefully via postman

Following the tutorials and trying to manipulate some example didn't yield a working solution, the way I see it I have two options, currently trying option (1) as option (2) is a general fallback:

1. Locally build the server directly with ADK, i.e. similar to how FastMCP is used, only with agents and local run.
2. Wrapping a runner as a Flask/FastAPI application, where the runner would get a root_agent similar to all example

As mentioned, I'm following the path of (1), in that case I've created an agent tool with agent_tool = AgentTool(root_agent), the current error that I'm getting is: 'NoneType' object has no attribute '_invocation_context'\", but as this flow isn't working smoothly, I'm wondering is path (1) the suggested approach and is there any end-to-end example for such scenario?