Faster to Build than to Google, Review, and Install

I've been a software engineer for a long time. I've been using Claude Code for about two years. I am continually amazed at what it can do. I'm doing some experiments at home with local AI (using Hermes and Qwen 3.6-27B, but I digress). I wanted a safe, reliable, way to query my Outlook email and Calendar. As odd as it sounds, there isn't a plug-in for Hermes that'll do this, and the available MCPs are... pretty much overkill. Rather than spending time Googling, reviewing, installing, and validating... I just asked Claude Code to write me an MCP that'll do exactly what I want. It wrote the code, in Python, it wrote 231 test cases, it built the code, ran the test cases and fixed the bugs. I had ChatGPT review the code. It found 6 soft spots. I passed the review to Claude. It agreed, fix the issues, wrote 14 more test cases, ran the tests and it passed the test. It installed the MCP into Hermes and tested it. It worked. Not anything earth-shaking, though, right? What's INSANE is that it did all this in one hour . OK, an hour and a half including the time it took me to have ChatGPT do the review and have Claude do the updates. Now I know what the code does. It lives on my system. It's under my own control. And it only does exactly what I want it to do. Faster than trying to find and test an existing solution. Wow.