We just released 𝚛𝚎𝚊𝚌𝚝-𝚋𝚎𝚜𝚝-𝚙𝚛𝚊𝚌𝚝𝚒𝚌𝚎𝚜, a repo for coding agents. React performance rules and evals to catch regressions, like accidental waterfalls and growing client bundles. How we collected them and how to install the skill ↓ https://t.co/kfLSbKl15X

help us make it better for you and the web https://t.co/cefkPwppM7 thanks to @argyleink, @wwwjim, @destroytoday, @lochieaxon, @pacocoursey, @joebell_ & @austin_malerba for their contributions

Agents are getting better at creating UI, but some things still annoy me. I wrote them down as https://t.co/mPQ27gNa3Z. https://t.co/QeJjCaCRgd

@round Well you see it's simple really it's all about context management and making sure the models get the right context at the right time so rules are like always-on context but commands are like on demand context that the user invokes which are different than skills which are like

I'm totally rethinking how I prototype with AI after seeing how Atlassian's design system team does it their approach to "templates" and "recipes" in Figma Make is pretty genius 👇

Every time we've made it easier to write software, we've ended up writing exponentially more of it. When high-level languages replaced assembly, programmers didn't write less code - they wrote orders of magnitude more, tackling problems that would have been economically

My LLM coding workflow going into 2026: https://t.co/4OPPRxrniN. Specs, skills, MCPs, small iterative chunks, and always review what the AI suggests.

I don't share this one often, but https://t.co/wAwQUrPVNz is a project I made last year. It contains a bunch of interviews with designers and engineers from companies like Vercel and Linear. Thought you might find it interesting!

The design system to do list widget is now live! It's a tool to help check off component requirements before it gets to production: states, accessibility, documentation, tokens The goal is to bridge design and dev, increasing confidence in production https://t.co/uuuKTE1nld

here's the @CodePen for this one 👨‍🍳 — works in all browsers 🤙 (where interpolate-size isn't supported, do a frame measure on load ✅) https://t.co/rJC2mH0vji

accordion transitions w/ css ::details-content, <details> + <summary> 🧑‍🍳 details:has(~ [open]) { --y: -1; } [open] ~ details { --y: 1; } details { translate: 0 calc(var(--y) * 1rem); } [open]::details-content { height: fit-content; }

I made a 31-min tutorial on prompting with GPT-5.1 to create amazing UIs. Insane how fast it is now.

Having a blast re-designing all the React Aria examples this week. Flat design is so over – bring back depth! 😃

Introducing Paper Mono: a beautiful monospace font for design and code. Get the download and more details in the thread.

🥳 CSS functions have arrived!!! 🥳 And they are *AWESOME* Now, you can do things like this: @​function --alpha(--color, --opacity) { result: rgb(from var(--color) r g b / var(--opacity)); } div { background: --alpha(red, 80%); } (*arrived = in the latest stable Chrome)

Less than a month ago I published part 1 of my essential reading series, and it’s already my 9th most popular post of all time. There’s a growing need for curated, thoughtful content as an antidote to the endless slop filling our feeds and inboxes. To continue building the

Traditional companies trying to compete with AI-native start-ups. https://t.co/iTCeXHMuTs

New in @ChromeDevTools: Gemini can modify and save CSS changes directly to your source! Tired of manually copying CSS changes from DevTools back to your editor? Gemini to the rescue! You can now ask Gemini in the AI Assistance panel to: ✨ Modify and fix CSS within the Elements

CSS if() function landed today(!!!) in Chrome 137 🥳 along with another rad feature: reading-flow 🥳 So I put together a quick video showcasing both:

I made a guide for prompting impressive UI code After creating 120 components in a week while working on Aura, listed all the techniques I used: frameworks, styles, framing, html-to-code, image-to-code, etc. AI is getting so good at creating user interfaces.