Show HN: Persona.js – a vanilla-JS agent UI library with native WebMCP (MIT)

Re:Show HN: Persona.js – a vanilla-JS agent UI library with ... by sirjonathan on Saturday June 20, 2026 @05:11PM (#48613011)

Love seeing more vanilla projects and tooling around standards. Long live the web.

Edit: I’ve been thinking about offering an overlay UI for a web based game and this could be a good fit for that. I’ll give it a spin later and let y’all know.

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Re:Show HN: Persona.js – a vanilla-JS agent UI library with ... by becomevocal on Saturday June 20, 2026 @05:37PM (#48613207)

Thanks! Definitely interested in the game overlay use case.

My gut says you'll need want to hook into custom render functions and theme config to map to your game styles, since it's going to look very different than the standard OOTB options.

The best file to use as a starting reference is here: https://github.com/runtypelabs/persona/blob/main/packages/wi...

If you run into anything, GH issues are welcome!

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