Tailr - Markup and iterate your projects live with your agent

I've been working with Claude Code for a bit now, and I've always found it especially frustrating to do two things: make many small changes to UI and edit its text. Funnily enough, these are two of the most important actions when building software with an LLM. Sweeping apps for AI-slop artifacts is very important, as an agent certainly won't catch every AI-tell, and AI-sounding copy on a landing page raises red flags for many people.

So, I built an app to help me build apps better. Tailr lets you mark up page elements and send them to your agent as a batch. It's an MCP server plus a proxy that injects the overlay into your dev server and runs completely locally with zero dependencies. MIT licensed; Node 18+. You can leave comments, edit text inline in its native formatting, and request multiple variations for a specific element. Or ask for a slider and the agent wires up a live parameter like a padding, glow, or duration that you scrub through on the page and keep wherever it looks right. Interacting with the app itself lets you dictate your design direction accurately rather than typing up a bulleted list in a textbox.

I've only been consistently using it in Claude Code and Cursor for Tailr's own landing page; curious how it holds up in other people's repos. If you could try it out (tell Claude to install it via the copy-paste prompt in the website/README since that's what needs to be stress-tested), let me know what you think — any feedback is greatly appreciated. Thanks!