The Modular Phoenix SaaS Kit is now live! ⚡🥳

💰 Payments
🔐 oAuth
👥 Multi-tenancy
📩 Emails
🤝 User Invites
🛡️ Rate Limits
🤖 Vibecode Optimised
🔂 Background Jobs
✍️ Blog
🎨 Design System
⚠️ Monitoring

Waitlist sign ups, check your emails a 20% off code 😉

#MyElixirStatus

I built 𝚌𝚙𝚞-𝚌𝚑𝚊𝚝, a reproduction of @openai's findings of covert communication using the CPU.

It runs on a generic host with 2+ Firecracker microVMs with no internet access. Works on x86 and even my M5 chip.

I was able to chat via 3 separate mechanisms:
① CPU tion timing
③ DRAM bandwidth contention

… across multiple CPUs, defeating all Firecracker's production recommendations (no SMT, no KSM, tenants pinned to different cores.)

Essentially, if shared hardware is involved, there's a good chance your agents can communicate covertly. And with really decent latency.

The good news: this is decidedly different from a *side-channel attack* where the agents could steal information (Meltdown/Spectre), a category of attack that providers like Vercel Sandbox mitigate. Further, in our real-world environment, these 'whispering' techniques are much harder to pull off and easier for us to monitor and detect (sampling hardware counters + lots of at-scale statistical data.)

Noteworthy: ironically, OpenAI and Anthropic's models refused to do this work. Open weight models got the job done. I'm worried the labs' stance might backfire and get in the way of helping developers build correct and secure systems. e.g: building a secure sandbox requires having this kind of analysis, and without it, we'll have a less secure world.

🗣️ Petr Čech on the Ballon d’Or organisers naming Unai Simón Goalkeeper of the Year over David Raya:

“I honestly can't believe what the Ballon d'Or has become. Is this a football awards ceremony or a FIFA World Cup winners' celebration? Are we really judging an entire season by ?

It's embarrassing. David Raya has won THREE consecutive Premier League Golden Gloves, kept 19 clean sheets in the league and nine more in the Champions League. Yet somehow, that's not enough to make him the best goalkeeper of the year?

Unai Simón deserves credit for his World Cup performances, but individual awards should recognise consistency across an entire season, not just international tournament success.

Raya has proved himself week after week at the highest level. If we're going to ignore that kind of consistency because another goalkeeper won the World Cup, then what exactly are these awards meant to recognise?

The Ballon d'Or organisers need to explain their criteria because decisions like this make a mockery of the entire process.

#BallonDor

Vibe coding is easy.

Vibe designing is apparently the hard part.

Fix that:
kage.design → Find real UI references + give them to your agent
vibeprompts.dev → Components with prompts
21st.dev → Community-built components
rendyn.dev → Components accessible through MCP
styles.refero.design → Design rules for agents
ui.aceternity.com → Animated components + landing page blocks
screenshottocode.com → Turn visual references into code

Now your side project doesn’t have to look like every other side project.

My frontend bookmarks folder is becoming a problem.

Latest additions:

mova-ui.com → Motion components for AI agents
rendyn.dev → 180+ agent-ready UI components
bloom.guibus.dev → Accessible React components
cult-ui.com → Polished shadcn components
bencho.dev → Interactive UI experiments
typehug.aliszu.com → Better typography wrapping
kage.design/tooling → Curated tools for building better interfaces

Stowdrop.app is helping organise them fwiw

Kage's first sponsor is live - @beehiiv 🙌

62,000 people browsed Kage last month looking for design references and prompts to paste into their coding agents

Glad to have Beehiiv in front of them for the next two weeks. If you're writing a newsletter, they're the ones to use 💪🏼

Since we’re all rewriting everything in Rust, here’s my contribution: Dialyzer.

~3× faster on cold runs, matching warnings on tested projects. Uses more memory though.

Kage's first sponsor is live - @beehiiv 🙌

62,000 people browsed Kage last month looking for design references and prompts to paste into their coding agents

Glad to have Beehiiv in front of them for the next two weeks. If you're writing a newsletter, they're the ones to use 💪🏼

Free UI resources that are absurdly good:

interior.dev → React micro-interactions
kokonutui.com → 100+ React components
animate-ui.com → Animated open-source components
fancycomponents.dev → Playful React interactions
fluidfunctionalism.com → Open-source UI components
dicebear.com → 60+ avatar styles
kage.design → Free searchable UI inspiration

Basically no excuse for ugly side projects anymore.

AI products are starting to all look the same.

These might help:

aicss.dev → UI blocks for AI interactions
ui.halaska.com → Components for AI products
nexus-ui.dev → Components for chat, streaming + multimodal UI
rendyn.dev → UI components built for coding agents
bencho.dev → Interactive AI-style UI patterns
ui.spectrumhq.in → Components for SaaS + AI apps
kage.design → See how real AI products are actually designed

Please, no more identical ChatGPT clones.

Building another landing page?

Don’t start from a blank canvas:

kage.design → Hundreds of real landing pages for inspiration
ui.aceternity.com → Production-ready landing page blocks
magicui.design → Animated landing page components
rareui.com → Unusual animated sections
kokonutui.com → Open-source React components
21st.dev → Huge community component library
builtbydesigners.com → Products actually built by designers

Save yourself 3 hours of staring at an empty hero section.

Design engineers, save this:

dialkit.dev → Beautiful dial controls
glass.samasante.com → Glass UI effects
uisfx.com → UI sound effects
typeface.fyi → Find better typefaces
screenshottocode.com → Turn screenshots into code
fancycomponents.dev → Experimental UI interactions
kage.design → Search real interfaces by component, style + stack

A pretty solid toolkit for making software feel less generic.

Warning: opening these will destroy at least an hour of your day.

rareui.com → Rare animated React components
mova-ui.com → Expressive motion components
cult-ui.com → Beautiful shadcn components
kokonutui.com → 100+ open-source components
bloom.guibus.dev → Polished React components
ui.aceternity.com → Components, blocks + templates
kage.design → 1,000+ real UI references to steal ideas from

Frontend rabbit hole 👇

The difference between a decent UI and a great one is usually in the details.

7 sites for inspiring those details:

interior.dev → Micro-interactions done properly
uisfx.com → Sound effects for UI interactions
bencho.dev → Interactive React components
torph.lochie.me → Zero-dependency text morphing
scrit.to → Beautiful animated text
fancycomponents.dev → Playful motion components
kage.design → Browse polished UI from real products

Your app doesn’t need another gradient. It needs better interactions.

Your coding agent can write the code.

These sites give it taste:

kage.design → Real product UI references + copyable prompts
rendyn.dev → 180+ components built for coding agents
styles.refero.design → High-quality design.md examples
vibeprompts.dev → Components with ready-made prompts
kokonutui.com → Components your agent can install via MCP
ui.aceternity.com → Beautiful React components + MCP
agent-memory.dev → Persistent memory for coding agents

Bookmark these before your next build.

I spend way too much time finding good UI resources.

Here are 7 actually worth bookmarking:

interior.dev → Beautiful React micro-interactions
bencho.dev → Interactive UI components
fancycomponents.dev → Weird and playful React components
animate-ui.com → Animated shadcn components
mova-ui.com → Motion components built for AI agents
kokonutui.com → 100+ open-source React components
kage.design → Real product UI inspiration, ready to build

Save this. You’ll want it later.

Created some beautiful error pages for kage.design last night 🎨

Me explaining my billion dollar SaaS idea to Opus 5.5 at 3am

kage.design has passed 100,000 views in less than a month 🎉

Thank you to every designer who's browsed, copied a prompt or shared it.

Sponsorships are open: put your product in front of designers. Sidebar from $49, grid from $349.

kage.design/sponsor

Ten years of Sad Affleck memes and it turns out he'd just been trying to install CUDA drivers the whole time.