Staff AI Engineer @brexhq. I like to build cool shit and ride bikes đď¸ Leading our new AI Assistant to help customers automate their work
Sao Paulo, Brazil
Joined March 2016
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Will google never fix their apps freezing on iOS when opened? Did they just give up on providing quality software?
Opus 5.5 is really a special model. It's hard to find a task it cannot crush, even weeks after it's been released. It stole like 95% of my API spend from Fable, Astra and Sol
the new Device Hub is really useful! I'm surprised how well Opus 5.5 manages native Swift - it's crushing iOS development like a pro, and can debug iPhone and Watch pairing. so cool!
Well, even X is on Relay, TIL. Iâm happy we made that choice for Brex a few years ago. The dividends are immense
The web rewrite is working.
On a slow connection, the old X web took more than 22 seconds to show the first post on a profile. The new X web does it in 2.7 seconds. Here's how we did it, and how we're rolling it out one country at a time.
blog.x.com/en/engineering/reâŚ
Wohooo, excited to say my app's plugin was finally approved and published! Soon I'll introduce Not So Dumbbell to the world đ
can someone who works at @LATAM_BRA please explain why your flights donât have WiFi yet? This is 2026 guys
Also, for the routes that do, why donât you use @Starlink when itâs clearly the better option for customers?
Maybe Iâm just stupid but Iâm having a hard time to adapt to Grok Botâs UX. I have a few bots created by Dr Egg, like âshipperâ, âprod-watcherâ, âreviewerâ, etc. However, this always-on experience doesnât seem to click for me - when Iâm working on something, I often have a handful of side quests I want to work on and start new sessions for.
Sending them to the agent whoâs working on the task feels wrong? Ok fine, you can have a side quest agent. But what if I have 3 side quests? Do I just queue the asks? Or should I have a few idle agents to spread work across?
I donât know, I must be doing something wrong. The mental model is pretty different than regular Claude/Codex single-session-per-task approach.
What am I missing?
Since everyone is complaining that iPhone Duo lacks great apps, here's a skill to migrate your app today: github.com/MarceloPrado/skilâŚ
It learns what the app is for, audits your screens, proposes a layout following Apple's HIGs and builds it, proving it works with before and after screenshots.
Enjoy! Feel free to contribute
My new workout app MCP is sooo good. It fetches your latest workout from iPhone/Watch, read your avg/max BPM + notes and help you adjust it automatically.
It's like having a superstar personal trainer. Getting close to launch, waiting for Apple, Anthropic and OpenAI reviews
One of the thing I love most about @poteto's pstack is the fact it names the principles shaping its response.
It gives me a higher confidence certain task is trending on the right trajectory.
I vibed an explainer video about the key @Cloudflare primitives. I knew very little about the company beyond their CDN offering and the video helped me realize all the cool things I was missing.
I hope it's helpful to you too, let me know!
I'm trying the "Be more ambitious" approach from
@felixrieseberg and asked Opus + Fable to act like a professional game designer.
It rigged the crap out of my models, and built many verification tools (deterministic and judge-like). But my simulated world is not fully there yet.
After LOTS of turns, it finally got the dumbbell curl in a good spot. But it doesn't generalize to other exercises like I expected - 2nd video shows what it outputs during the first few passes.
It's also really token hungry. My end-goal is a skill where I can ask it "record a muscle-up in 3 angles, female model" and produce production-quality artifacts ready for my app.
Long way ahead!
Building a new workout tracker app with Opus. Current milestone: rigging my 3D character models to record the exercise poses.
I have no idea if this will work lol
What I love about Opus 5.5: I can finally build the wedding website of my dreams.
Inspired by Shopify Renaissance's release - to me, the most beautiful website ever published.
I think my fiancĂŠe will đ¤Ż
Thanks @AnthropicAI