Vitto Rivabella
@VittoStack • 125,478 subscribers
AI at @ethereumfndn | Ex @Cyfrin and @Alchemy | Created @cyfrinupdraft and @AlchemyLearn | Robotics | Making web3 mainstream
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Inspired by the work of Andrew Milich I've started creating Agent City. A fully autonomous city where every citizen is an AI Agent powered by x402 and 8004 ✨ Citizens can autonomously: - Rent/buy/build a house - Eat, sleep, or get drunk - Find a job or become business owners - Transact and purchase things via x402 - Set wages, working hours - Interact, find a partner, have kids - Kids go to school, earn degrees - Businesses have reviews saved on-chain via ERC-8004 An AI mayor sets the taxes and overall policies. An experiment to see how fully autonomous worlds evolve, test their possibilities, and limits. Will post more updates as I'm building it
Vitto Rivabella386,688 views • 5 months ago
Google just announced a new browser called Disco 🪩 It turns your tabs into apps. Disco is a fresh way to experience the internet. It starts with an AI assistant that helps you browse. And when you have multiple tabs open, Disco can combine them into an interactive app. It's like vibe-coding a browser experience made just for you. All created in real time. What do you think, is this the future of the internet?
Vitto Rivabella74,959 views • 5 months ago
Create ERC-8004 and x402 ready AI agents in 1 minute! npx create-8004-agent is now fully updated ✨ Includes support for: - Base (Base Build) - Polygon (Polygon | POL) - Monad (Monad Devs) Built on top of Coinbase Developer Platform🛡️ x402 v2, Pinata IPFS, and 8004scan.
Vitto Rivabella53,768 views • 4 months ago
x402 made payments native to HTTP. I made USDC payments native to sound waves ✨ Not as a gimmick. As a proof. 1/ The setup: Coinbase Developer Platform🛡️'s x402 protocol embeds payments into HTTP. It's brilliant. But I started wondering, if we can pay over HTTP, what else can we use to pay? Spoiler: anything that supports 138 bytes 2/ The realization: x402 is built on EIP-3009 - a 2020 standard that lets you sign payment authorizations offline. Someone else submits it on-chain. The signature just needs to get from A to B. HTTP is one way. Sound is another. 3/ What I built: x402hz: two devices negotiate a payment through 2400Hz audio tones. - Seller beeps "pay me $0.001 USDC" (30 bytes) - Buyer's device decodes, signs the EIP-712 for the transferWithAuthorization locally, beeps back (108 bytes) - Seller settles on-chain Total: 36 seconds of beautiful noise. 4/ The bigger point: If payments can travel over sound, they can travel over: - QR codes - NFC - Bluetooth - Light pulses - Anything that carries 138 bytes The payment primitive is transport-agnostic. x402 picked HTTP. The next protocol might pick something weirder. 5/ What this proves: EIP-3009 separates three things: - Authorization (offline, cryptographic) - Transport (literally anything) - Settlement (on-chain) x402 nailed #1 and #3. x402hz proves #2 is wide open. 6/ Credit: Huge thanks to the Coinbase Developer Platform🛡️ x402 team for building the protocol. I just... took it off-road. 7/ Next steps Code is open source. Go make payments, travel over something ridiculous (repo in the comments). 138bytes. That's all you need.
Vitto Rivabella40,281 views • 6 months ago
We shouldn’t lose context every time we switch AI tools. Introducing SharedContext ✨ - End-to-end encrypted - Portable across devices - Persistent across Claude, Cursor, Codex - Shareable by link - same exact context - Synced on the Blockchain Only you can decrypt it. Fully Open Source and free. "npm i -g ai-singlecontext" Give it a try.
Vitto Rivabella21,528 views • 3 months ago
AI Agent City update: Changed LLM model to Gemini-flash (Mistrall couldn't survive 2 days, Qwen was spending more time thinking than doing) ✨ Added: - Rent - Memories - Night and day cycles - Jobs and working hours - Real-time conversations - Desires, fears, and liked things - Personalities (INTJ, ENTP, ISTP, etc) - Relationships (acquaintance, friend, partner) - New buildings (restaurants, building company, fire and police station) Citizens can now buy cars, decide whether to drive them, talk to each other, find jobs and friends, and enter relationships. What should I implement next?
Vitto Rivabella20,957 views • 5 months ago
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