Over the past couple weeks, l've been really immersed in learning about MCP, a new protocol for equipping any LLM with a set of tools that can run on your own machine or a remote server you control and give all kinds of superpowers to Al agents to do things like search, etc.
As part of that research, l've already built one very fleshed-out and useful MCP server that l've shared here (I've added much more to it recently though!), the LLM Gateway MCP Server, which lets you use a big model to delegate to a cheaper model (and many more things in addition to that, like running automated multi-round LLM Tournaments, which I also posted about recently on X).
To actually use these MCP servers though, you need an MCP client. Most people seem to be using the Claude Desktop app. I tried this and got it to work just fine, but it was a bit annoying to set up and there were lots of things I didn't like about it. I wanted something better.
So two days ago I began work on what I call the Ultimate MCP Client. After ~24 hours of work, it's working and ready and I'm really proud of how amazingly well it turned out. This is going to be a workhorse tool for me personally.
It's pure python and all in a single large .py file which can be deployed as a self-contained uv script if you want. It offers all kinds of features and very rich console output for use interactively in a terminal, along with a CLI. But it can also be used in the background.
That kind of background functionality, orchestrating and coordinating several MCP servers nicely, is how I mostly intend on using it. But once I saw how nice the interactive terminal experience was, I realized that I could slap a FastAPl server on top of it and make a web GUl.
Because I hate unneeded complexity so much, I made the WebGUl a single self-contained HTML file you can just open in your browser (similar to my Your-Source-to-Prompt tool), and it looks awesome using Alpine and Daisy and other nice Ul libraries, all loaded via CDN.
I’ve made tons of improvements to this just in the past day. I thinks it’s already the most feature packed and nice looking MCP client out there now.