Barron (@BarronCaster) header
Barron (@BarronCaster) profile picture

catch more bugs w/ only code review that runs your code @qawithito founded/sold @theleowallet. built/scaled products to 9 figures @rev

SF
Joined September 2010
Photo by Barron (@BarronCaster)Photo by Barron (@BarronCaster)Photo by Barron (@BarronCaster)Photo by Barron (@BarronCaster)Photo by Barron (@BarronCaster)Photo by Barron (@BarronCaster)Photo by Barron (@BarronCaster)Photo by Barron (@BarronCaster)Photo by Barron (@BarronCaster)Photo by Barron (@BarronCaster)
The harder you work, the luckier you get.
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Promise made. Promise kept. By tomorrow, 25 million American children will have our gift of $250 in their accounts. $6.25 billion. Invested in kids. Compounding for decades. If you have a child under 18, claim their account and see how much is in there now. $250 is only the beginning. 🇺🇸
$6.25 billion. 25 million children. $250 each. Susan and I believe the smartest investment we can make is in children. That’s why we’re so excited to contribute $6.25 billion from our charitable funds to help 25 million children start building a strong financial foundation through Invest America. 💪📈🇺🇸 onedell.com/investamerica/
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Excited to introduce Onyx and announce our $8M seed round led by Dimension to build a virtual immune system! Onyx has always been a story of connection. The first connection was to my cofounder @amlakhan, a deeply curious technologist who I’ve been fortunate to call a friend for 19 years now. I've always said that working together was a cornerstone of starting Onyx, and it truly has been one of the best decisions I've ever made. Connection is also at the heart of what Onyx does. We believe AI is key to making biological complexity tractable, ultimately transforming life sciences into an engineering discipline. But that requires the right data. AI performance compounds with context, and richer biological context comes from more connected data. In biology, such context is often missing: molecular data, clinical history, and change over time are typically captured in isolated fragments. Onyx provides the substrate that connects them, pairing genomics, transcriptomics, proteomics, and metabolomics with rich clinical histories. By studying these layers together in people over time, our data platform traces how real human biology changes in response to infection, inflammation, and treatment. Seeing how these trajectories differ across people brings us closer to understanding what drives disease—and to developing precision medicines that work better for real people. Yet connecting data is only possible because of the people who have connected with our mission. Nearly a thousand members have already joined our research studies. They are more than research participants: they are difference-makers transforming how we understand some of humanity’s most complex and chronic diseases. I always say that our work is for people, but the truth is that people make our work possible. That connection comes full circle, and at Onyx, people will always come first. Finally, as we raised our oversubscribed round, we sought more than just business partners. We wanted investors we felt a true connection to—not merely sources of capital, but co-conspirators in creating meaningful change. To that end, we feel incredibly fortunate to have joined forces with @_DimensionCap, @haystackvc, @refactor, @standard_vc, @robotventures, and many more. Now back to building!
Today we're introducing Onyx, a research collective building a virtual immune system: a model of how real people respond to infection, inflammation, and treatment. We're launching with an $8M seed round led by Dimension Capital. onyx.bio/news/introducing-on…
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.@clairevo at @lennysan & friends summit: "Whose's shipping more than ever in the last year?" *many hands go up "Whose revenue is going up proportionate to the amount of PRs?" *crowd laughs "That's the fundamental problem we're facing here!"
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81% of Ito's findings aren't found in the diff. Catch runtime bugs that only show up when actually running and testing the application.
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Oakland just power went out due to the heat wave. No ac and was relying on my @eightsleep to keep us cool. It needs to come with an external battery pack or built in generator
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We're giving one lucky fan a VIP experience at Saturday's @uscfb game vs San José State, presented by @WellsFargo! Repost for your chance to win!
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We just launched Ito on ProductHunt because code review shouldn't stop at the diff. Ito builds your app, runs the PR, and shows you what broke. producthunt.com/products/ito…
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Great product with clean interface. Actually enjoyed using Grok Bot to knock off some todo items that are more complex, but didn’t want to have to overly configure cursor or Claude. Considering @cursor_ai upgrade to keep using.
Introducing Grok Bot, now in early beta. Bots are AI teammates that do real work for you. They sign in to your tools, use them just like you do, and come back with finished work.
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our AI CMO created our first commercial for runtime code review. they want a feedback before we go live for NFL kickoff. wdyt
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just moved into our humble new office
i'm late to share this. we moved into a new @dodopayments office in indiranagar. 3x bigger than our last one. a year ago we went from a 9-seater to a 30-seater thinking we'd have room for a while. we didn't. the team outgrew it fast enough that we had to split up. my team stayed in the original office, @goelrishabh's team moved into the antler office. took two months to find the right space. now everyone's back under one roof. it's not really about the office. it's about what the office means. more merchants, a stronger product, and a team that keeps outgrowing every space we put it in. and it won't just be ours. we're opening it up to bangalore builders. build irl ep 1 already happened here.
Readers added context they thought people might want to know
As Ayush later admitted, the office photos were AI-generated or altered, yet the post wasn't labeled using X's available AI disclosure option. While not illegal, this misrepresents the company's reality and warrants a Community Note. Source --x.com/ayushagarwal/s…
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Barron retweeted
Ito is a runtime analysis code review agent. Builds your app from a PR branch and runs real tests against it. For Doltgres: real SQL, real Postgres wire protocol. Over 6 wks: 43 PRs, 2:1 signal-to-noise. Caught long-standing bugs they didn't know existed. dolthub.com/blog/2026-07-20-…
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I prefer my models open and harness closed.
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Made this mistake once and was lucky enough to have someone hold me accountable. Never again.
best friend is a PM and is back at work after 5 months maternity leave she is shocked at how many coworkers / partners have outsourced critical thinking and now copy pasta claude “feels like they’re not using their brain, very frustrating”
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Spot on. Peer code review is dead as you get more signals that the code works as expected. Can’t scale with the velocity of the best teams.
i personally think code review is dead. the team does not agree. directionally found this surprising.
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Running parallel coding agents? Worktrees isolate your files, but your DB, ports, and services still collide. moo gives every agent its own Linux VM, versioned with your repo. Fork a 20 GB machine in under a second. moove faster: github.com/heyito/moo
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Still amazed you can move to cutting edge open source models and save 80%+ with no degraded performance
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