kevin (@kleffew94) / X

kevin

11.2K posts

kevin

@kleffew94

distributed systems, onchain finance, models, and agents | coauthor of x402 whitepaper | AI GTM @coinbasedev | prev @replit |

San Francisco, CA

Born September 4

Joined April 2011

Pinned
kevin
@kleffew94
Apr 2
Today is 4.02 day. Less than a year ago (May 6, 2025), we published the x402 whitepaper. Since then, the protocol has: • Processed 166M+ transactions • Unlocked new monetization models for API, data, and other providers on the web. • Enabled autonomous flows that were
92K
kevin
@kleffew94
Jan 7, 2025
We're bringing together the best AI developers IRL in SF for the first time to build agents onchain. Join us at the @coinbase office on Feb 1-2 with @Anthropic and @Replit. Check out the Luma link below for more details and registration 👇
313K
kevin
@kleffew94
Jan 23, 2025
We are pumped for @CoinbaseDev's upcoming upcoming Onchain AI Hackathon in San Francisco on Feb 1-2. Today, we are announcing a final list of hackathon sponsors for the event, which includes leading companies, across the AI and Onchain sectors. Join us in welcoming:
127K
kevin
@kleffew94
Sep 5, 2024
Replit Agent is available today for all Replit Core and Teams subscribers. The Replit Agent has access to directly call the tools in Replit – it can: • install packages, •traverse the command-line, • write to the editor, • spin up cloud services like Authentication,
00:00
30K
kevin
@kleffew94
Mar 4, 2025
Onboarded a new friend onchain today 🔵. Excited to get back to work soon!!
10K
kevin
@kleffew94
Oct 22, 2025
Per a16z, the TAM for x402 is in the 'trillions'.
a16z crypto
@a16zcrypto
Oct 22, 2025
Replying to @a16zcrypto
AI and crypto aren’t competing — they’re converging. AI needs identity, payments, and provenance tracking. Crypto provides all three. Together, they’re shaping a more open internet—one where both money and intelligence move freely.
47K
kevin
@kleffew94
May 11, 2025
Replying to @bayeslord
3.3K
kevin
@kleffew94
Oct 10, 2025
Replying to @FarzaTV
Would be funny if you used this to bring back Clippy (Windows 95 style)
14K
kevin
@kleffew94
Oct 21, 2025
Getting ready to present to the x402 meetup in NYC. Discover. Pay. Autonomously.
13K
kevin
@kleffew94
Oct 14, 2025
x402 shoutout in latest announcement from @Visa. investor.visa.com/news/news-deta…
31K
kevin
@kleffew94
May 14, 2022
Replying to @cobie @elonmusk and @Twitter
This is actually how science is done - observation, sampling, data collection, thesis, experiment on variables!!! Science is fine IRL, and directly
kevin
@kleffew94
Aug 20, 2025
This card is so sick. Coinbase has become my bank account with this. 4.5% cash yield with 4% back on all purchases with BTC.
00:51
Coinbase 🛡️
@coinbase
Aug 19, 2025
Coinbase One Cards have started shipping. Here’s the TL;DR ↓
28K
kevin
@kleffew94
Feb 17, 2023
Wrote a @Gradio app. It's a cool example of using @storj as an origin for video2video transformation using stable diffusion. Take link for object that is globally distributed, bring it to an edge GPU, transform it, then push output to storj
00:00
91K
kevin
@kleffew94
Oct 1, 2025
With x402, Agents can buy datasets a lot faster than humans, driving better alignment and task optimization. Great x402 use case discussed on @CNBC.
00:00
17K