Tupi — Tupinambá · Bertioga, 1554 A bark-canoe war fleet paddles up the Bertioga channel at dawn. Real-time 3D in the browser, researched from 16th-century sources. Built with Claude Opus 5.5 + three.js: ~22h, 32 agents, ≈$516 in tokens. rubenmarcus.dev/demos/tupi @threejs @AnthropicAI

Got a P/R merged in VIEM! damn Im so happy! github.com/wevm/viem/pull/51…

3rd view camera in CS Brasil made with AI and Three.js -> play: csbrasil.online

20% discount with my code: ti.to/halfstack/halfstack-vi… @halfstackconf

New post: how I rebuilt a 1554 Tupinambá canoe raid in the browser with 32 AI agents on opus 5.5 The research that corrected my brief, why the people were the hardest part, and what froze the page on a friend's PC. rubenmarcus.dev/blog/rebuild…

I need to confess something: I created a custom AI skill by feeding it over 1,000 of my social media posts and every article I’ve ever written, so it could learn my writing style. Then, I give the AI ​​a topic and ask it to write; covering everything from workplace feedback to social media posts. Of course, I review everything before publishing; often, I’ll write the text entirely myself or start by outlining the ideas in paragraphs, and the AI ​​develops the content alongside me.

In 16 of November Ill be presenting a speak about the engineering behind my fps game: CS Brasil (csbrasil.online) , at Halfstack Vienna - Austria @halfstackconf

In less then 1 Hour Ill be online at CONF42 Youtube check it out: piped.video/watch?v=4M5rn29g… conf42.com/AI_Agents_2026_Ru…

Alguém fez sozinho, com Claude Code, um jogo onde o seu GitHub vira um bunker de sobreviventes e esse alguém sou eu... Chama GitShelters. a premissa: houve o Great Merge Conflict, a internet virou as 404 Lands, e o que sobrou foram bunkers de devs. o seu é um deles. cada commit que você faz na vida real vira bytes lá dentro, bytes constroem cômodos, e os sobreviventes (os Forks) sentem quando você some do repositório: pushou hoje, a tripulação fica feliz e as luzes ficam firmes. uma semana sem commit e eles começam a reclamar no terminal. a referência mais direta é o Git City do @samuelrizzondev, que provou que "seu GitHub virando um mundo" funciona e tem público. o meu ângulo é o bunker: em vez de uma cidade que cresce, uma tripulação que depende de você. e, em parte, a mentalidade de shippar do Coro Solto do @rubenmarcus_dev, que me tirou da paralisia de "ainda não está pronto". o que tem hoje: – o bunker em corte, dois andares, cômodos que você constrói gastando bytes. o andar de baixo só abre com um elevador – Forks com nome, trait e humor, andando pelas salas, sentando no terminal, trabalhando na bancada. mais de 100 falas, escritas à mão – jobs: cook na despensa, engineer no gerador, tinkerer na oficina. Cache, Uptime e Payload são simulados enquanto você está fora, e sem engineer o bunker apaga – um Daily Event todo dia no terminal do Main Branch, com escolha e consequência. a tripulação reage à sua decisão – badges no seu perfil público, e um mapa das 404 Lands onde cada bunker é um ponto – uma intro com trilha, sincronizada com a música, e o mascote logando você no Repo – tudo em three.js com geometria primitiva, zero modelo 3D externo, 60fps em notebook. código aberto, AGPL 5 meses no forno, nas horas vagas, entre trabalho e estudo. hoje abre a alpha. é alpha de verdade: vai ter bug, e eu quero saber de cada um. joga aqui, é só conectar com o GitHub: gitshelters.com código: github.com/GuiBarradas/git-s…

its crazy how your work vocabulary changes according to what product you have been working on. For the past 4 years I had been talking a lot on tokenization, transactions, onboarding, etc that was the time when I worked on Crypto. Now.. my vocabulary is basically, IK, rigs,mesh,models all day everyday.

I briefly held #1 on a public EVM gas-optimization leaderboard: a reimplementation of the modexp precompile (0x05) as 5,444 bytes of EVM bytecode, with a Lean 4 machine-checked proof it's correct for every input, not just the test vectors. Built end-to-end by a fleet of AI agents. precompile.fast @yukonresearch

Its cool to see some of my old work colleagues still works on web3 and blockchain, and see which path they went. I myself pivoted to 3d/gaming/animation with AI. Im currently not just building a game but working with Blender,Unreal and Three.js day and night. Im happier now.

Im 36 , AI Engineer based in Portugal and Spain Im here to meet smart people who turn ideas into real products. Im building an fps game with AI and have several other open source projects, lets connect

just bought this beauty + UGreen 40gbps protection case for it. Since then 400 euros, I got 2TB storage on my macbook with almost native speed. I was using a lot of storage for my AI workflows and it always reached the limit of 512gb of my mac. Now it is using barely 150 gb. thinking that a 1TB mac in Portugal is 1000 euros more expensive then my current one, Its a nice bargain. and I can plug this in any other laptop that I want with all my project files.

I got two talks approved here in the EU. In November I gonna talk about my game and the engineering behind in a Austria Event In December I will speak in a big Paris event about AI Harness Engineering. Really excited, some news really soon about it!

Last month my MCP Server on my portfolio had more then 25k calls. 319 Agents are indexing my blog posts and CV through the internet. 33 people also consumed my resume through CURL command. The result? IDK, I got two emails from AI companies, and lot of spam from bots/scripts.