Google just launched ADK for AI agents. I built something similar in .NET months ago using MCP. Here is what I learned.

On April 30th I got an email from Google about something called GEAR, their new program for building AI agents using ADK, the Agent Development Kit. I signed up, watched the intro video, and had a strange feeling of recognition. The pattern was familiar. Define tools. Write descriptions. Connect an AI model to those tools. Let the model decide which tool to call based on what the user asks. I built exactly this in .NET back in February, except I used MCP instead of ADK. And I pointed it at a Kub