XMLUI's Markdown component supports codefences that can define complete apps: a Main, one or more user-defined components, and an API. You can express quite a lot of interesting behavior in a few dozen lines of code written between triple backtics. I've been really excited about this capability but I had to write this post to fully articulate why: it's all about reproducibility.

https://blog.xmlui.org/blog/xmlui-playground

#XMLUI #Documentation #ReproducibleSoftware

Here's how to make an XMLUI table responsive: https://docs.xmlui.org/howto/make-a-table-responsive

I just added the example to the Howto section in the docs. Now when I ask an agent how to do this, the XMLUI MCP server should guide the agent to the working example and cite the URL.

I tested.

It does.

This is what I mean by testable documentation (https://thenewstack.io/how-to-upgrade-your-mcp-server-with-context-engineering/).

The agent is anchored to ground truth: a working example in a live playground.

#XMLUI #MCP

Xmlui

https://blog.jonudell.net/2025/07/18/introducing-xmlui/

#HackerNews #Xmlui #introduction #Xml #technology #web #development #Hacker #News

The project I joined in January just went public. XMLUI aims to empower developers who aren't React and CSS pros to create and maintain effective browser-based user interfaces.

#XMLUI #React #CSS

https://blog.jonudell.net/2025/07/18/introducing-xmlui/