David East

Now @GoogleLabs, after 12 years @Firebase
Working on @stitchbygoogle & @julesagent.
DESIGN.md core team.

[David East @_davideast]

Introducing the Stitch SDK

Yes. You can program design now.

I've been dreaming of shipping this for so long because it's just so much fun to use. I welcome all the stars ⭐️

https://t.co/rxqhJpTy3G

[David East @_davideast]

@aarondfrancis This one hurts bad rn.

It's been more than a few days...

https://t.co/OwXG4Wnfeh

[David East @_davideast]

In a few days I'll release the most ambitious solo project of my career.

This took all 12 years of my Firebase expertise and 6 months of patient development.

I believe this has the potential to change everything for build on Firebase and maybe more.

Shoot me a DM if you have the time to give it a try.

psa: I don't work on Firebase anymore but I was one of the earliest employees so I'll always be a Firebaser.

[David East @_davideast]

@steren @nikitaeverywher we both had the same haircut at 17 lol

[David East @_davideast]

@floydophone when you think about it, the browser is a free and unlimited sandbox too

[Stitch by Google @stitchbygoogle]

Four months ago, we launched the DESIGN.md standard to build a portable visual identity for agents. Recently, it hit one of the top trending repos on GitHub! 🤯

If you haven't checked the repo lately, it has leveled up. We just added:
✨ Linters
✨ Diff tools
✨ Translators

Want to turn your DESIGN.md directly into a Tailwind theme? See the attached one line command.

Keep watching this space. We have big plans for the future of OPEN and portable design formats. Repo link 👇

[David East @_davideast]

@QuinnyPig @marktechson well done lol

[David East @_davideast]

In a few days I'll release the most ambitious solo project of my career.

This took all 12 years of my Firebase expertise and 6 months of patient development.

I believe this has the potential to change everything for build on Firebase and maybe more.

Shoot me a DM if you have the time to give it a try.

psa: I don't work on Firebase anymore but I was one of the earliest employees so I'll always be a Firebaser.

[David East @_davideast]

@davis7 This is wild. And to think I felt good about my Evo X2 setup running wsl containers.

[David East @_davideast]

DESIGN.md is the third most trending repo on GitHub this week. Absolutely wild.

Great ready because we have a lot coming soon.

[David East @_davideast]

It's crazy how effective this prompt trailer is.

"Don't act. Just think and present solutions."

[David East @_davideast]

@sijirano Music to my ears. I actually have two more packages landing that I think are the most useful bits. I would love to get your feedback on them

[David East @_davideast]

Finally. I shipped a side-project.

Introducing inbrowser. Pluggable AI architecture totally in the browser.

site: https://t.co/eRIpEnMlYp
repo: https://t.co/pXLWBKzdws

@​inbrowser/model: on-device w/ transformers.js & webgpu. Cloud model proxies and OpenRouter BYOK flows.

@​inbrowser/agent: pluggable client-side agent architecture

@​inbrowser/resumable: pick up and resume across refreshes

@​inbrowser/relay: when you need a server, syncs resumable jobs and picks up across network drops and backgrounded tabs.

[David East @_davideast]

Finally. I shipped a side-project.

Introducing inbrowser. Pluggable AI architecture totally in the browser.

site: https://t.co/eRIpEnMlYp
repo: https://t.co/pXLWBKzdws

@​inbrowser/model: on-device w/ transformers.js & webgpu. Cloud model proxies and OpenRouter BYOK flows.

@​inbrowser/agent: pluggable client-side agent architecture

@​inbrowser/resumable: pick up and resume across refreshes

@​inbrowser/relay: when you need a server, syncs resumable jobs and picks up across network drops and backgrounded tabs.

[fks @FredKSchott]

Just Shipped: Flue 1.0 Beta

Flue is the TypeScript framework for building the next generation of agents, designed around an open agent harness with zero LLM lock-in. It’s like Astro, for agents.

Flue 1.0 has been redesigned around three core primitives:

🔁 Workflows — structured automations designed for background work, where your code drives the agent from start to finish.

🧭 Agents (New!) — autonomous, stateful loops where the model drives itself to complete a given task.

📡 Channels (New!) — connect agents to Slack, GitHub, Linear, Discord, Teams, and more. Flue handles the boilerplate for you.

Everything shares the same durable foundation, powered internally by Pi, Vite, and Durable Streams. Deploy anywhere, use any LLM, and recover running agents across restarts and downtime.

We’ve talked to a lot of teams building agents, and keep hearing the same thing: getting to production is hard work. We built Flue to help change that.

Flue 1.0 Beta is available today. Give it a try and let me know what you think!

[Rody Davis @rodydavis]

Career Update:

I am joining @GoogleDeepMind DevRel 🚀

[Simon @tokumin]

🚢a huge @NotebookLM ship today!

The new NotebookLM is better at what you love and can do much more of what you expect!

🌟 average win-rate of +15% over OG Notebook across our core chat evals, spiking to +28% win-rate for hard research tasks
🎨 Many new file formats (docx, xlsx, md, csv, json, svg etc) with especially beautiful PDFs, charts and images
🖥️ A cloud computer unlocking complex data analysis workflows for insights and decisions that count
🔍 Helps you find high quality sources online and expand on existing sources using Google Search (eg find and add all the references from a paper)

We want Notebook to be the best tool for research and hope you find our latest iteration to be even more useful!

[David East @_davideast]

@brajesh2022k @joshwoodward @OfficialLoganK @julesagent We are hard at work! But I'd be very interested to see what you've cooked up

[Meng To @MengTo]

Here's how I avoid these:

- Don't use GPT 5.5 to start a design
- Always use an image reference or site url
- Never prompt without a taste skill or DESIGN.md
- Set up design rules in AGENTS.md
- Get familiar with their names so you can change them

[Paul Bakaus @pbakaus]

Introducing Impeccable 3.5, the best way to design in production: iterate on real UI with your AI agent, in the codebase you actually ship.

Turns out many popular design skills, including Impeccable and Anthropic's frontend-design, weren't actually very good at...design (the workflow was valuable, but the output didn't magically make LLMs like GPT great designers). We measured it across thousands of generations: 74% of pages used the cream AI-default background, 76% reached for extreme letter-spacing, 90%+ failed the contrast floor.

So we started fixing slop systematically, specific to each model. The skill now compiles rules for the exact defects each model makes, instead of shipping one generic file to everyone. The biggest jump is in GPT-5.5 and Codex.

Also new:

◆ It now knows the difference between a new project and an existing one. Existing codebase, it reads your design system and preserves your identity. Greenfield, it seeds a fresh palette from 129 hand-curated anchors so every cold start doesn't drift to the same safe colors.

◆ Live Mode is now in beta, and works at two scales. Type a direction into the new Steer bar, or speak it, and the agent reads the whole page and edits it in place. Or pick a single element, steer it with a sub-command, live-edit any copy, and accept the variant straight back to source. Insert mode scaffolds brand-new elements between the ones already there. Recovery survives HMR, hidden heroes, and dev-tool overlays.

◆ A rebuilt anti-pattern detector. Torn off jsdom and onto a real CSS cascade resolver: roughly 20x faster, dependency-free, and now small enough to run inline inside the skill, not just the CLI and extension. 14 new rules, 41 total.

◆ The skill keeps itself current, checking once a day and offering to update. Plus /impeccable init and a bare /impeccable that reads your repo and tells you the next move.

Free, open source. Claude Code, Codex, Cursor, and more.

https://t.co/Q5dmE5wB7X

[David East @_davideast]

@samsheffer @MarcusMilione endorphin pro 5s 👌

[David East @_davideast]

@SambitBiswas okay I need one of these

[David East @_davideast]

Okay yeah, we need this

[Tech Actually @techactually]

Hear me out too