Sergi Fayos Villalta

I have an AI team that builds me companies. 🤖 Now you can have one too. Venture City is a platform where anyone can build, launch, and run a company completely on autopilot. We've opened 100 spots for people to build a company for free. There are only 50 left! Give it a try. Link below 👇

@folaoftech Is this legit? It's pretty insane

Google Omni might be too powerful 🫥

@MakiHacks @brookeleblanc @isaactolley_

This gorg @brookeleblanc & I planning GTM mocktail night at my SF apt Jun 8. Seeking superstar GTM/Sales pros. Who to invite? ~15 ppl.

With AI ads, people are wishing me a tragic life. I must be doing something right.

@karina_repko @matiasszarfer

what's the best AI video generator on the market rn (MJ, higgsfield etc.)?

Juno (@junocompanion) is the AI personal health assistant for the 1B+ people living with chronic illness. Founders @isaactolley_ & @marshalljgould both grew up with chronic conditions and spent years waiting for answers. 6 months in, Juno now supports 80,000+ people globally. ycombinator.com/launches/QT7-j…

@ycombinator @junocompanion @isaactolley_ @MarshallJGould AI used right

@matiasszarfer James won't listen to me

what we've been up to:

@anandPa94 @tryscope_app 👏👏

Introducing Scope (@tryscope_app): the platform that breaks down exactly how AI agents see and interact with your product. Products are increasingly being used through Claude Code, Codex, Cursor, and similar AI agents. Most companies have no idea what an agent's decisions look like. Scope fixes that. What Scope does: → Run real workflows across Claude Code, Codex, and Cursor, and show you when agents choose you vs. a competitor → Pinpoint exactly where agents get stuck: auth, onboarding, docs, setup → Show the full trace of every agent decision so you know what broke and why → Tell you what to change to get picked more, used more, and kept more. Every company we've shown this to has immediately thought of a workflow they want to run. Want to know how agents see your product? ↓

@gigi_ggrimes @pai_company @everhettgrimes @betaworks 👏👏

I’m so excited to officially introduce @pai_company to the world - the simulation engine for consumer brands. @everhettgrimes and I have spent the past 10 weeks building from the @betaworks campus in NYC - we’ve rebuilt our product from the ground up, landed F500 customers, and saved brands hundreds of thousands of dollars on research costs. We’ve also brought an unbelievable group of industry advisors and experts onto our team - I’m excited to share more about that soon. Pai helps brands build an AI model of their customer base that they can talk to and test product ideas, packaging, messaging, and ads with. We transform first-party customer data and research into a custom simulation engine that helps brands predict their customer reactions with over 85% accuracy on some of the toughest research questions - messaging hierarchy, concept tests, and packaging design.

@anandPa94 x.com/i/status/20548…

What’s the best airline to keep shipping?

220+ users 170 companies launched people already making revenue but the line I keep coming back to from a user call: “i wouldn’t have started this without Venture City.” that’s the point: not more apps, more people turning what they know into companies.

@godoyruben_ @techeurope_ 💪

{Tech:Europe} Paris AI Hackathon 🤖 @techeurope_

@MarshallJGould I heard @isaac_tolley17 is on top of his tiktok game

hit 100k tiktok followers in 2 months when i was 15. at the time i kept it lowkey because i genuinely thought having a tiktok was cringe. people at school eventually found out about the account and yeah, most of them thought it was cringe too lol. but a few of them came up to me wanting to know how i did it. i gave them some advice and they ended up hitting 50k and 20k respectively within a few weeks. suddenly we were all earning way more than the $5/week pocket money we were used to. it's been 7 years since i've posted on that account. honestly haven't really posted anywhere. now i'm looking to grow our company and step away from the code for a few weeks, and it's pretty clear tiktok is not the same platform anymore. the slop and low effort videos that used to print views are now getting actively penalised. the trends, the formats, the whole vibe is different. even UGC (a newer thing) used to work - but users are way less receptive to it now, you can feel it. so -what's the biggest viral tiktok hack in 2026 that actually guarantees views?

@isaac_tolley17 @junocompanion @bcherny @MarshallJGould @_catwu Beasts!

this week, we demo'd @junocompanion (yc p26) to the founders of claude code crazy what 18 months does now normal for us: - feature requests ship same-day - bugs fixed in <15min with automated PRs - custom integrations built in hours, not months what does coding in 2027 look like?

@matiasszarfer It's the rug mate, you gotta try it

They gave us an office with 35 empty spots and my cofounder decides to work on the floor

@isaac_tolley17 🔥👏

top 10 bedtime messages to receive

@isaac_tolley17 Wait... Where's his Mac Mini??

pov: your cto gets bored of the terminal

@Talhayasin112 @isaac_tolley17 Yes

@SergiFayos @isaac_tolley17 We aren’t live just yet, but I am building an early-access list. Can I add you in that list and will connect once we launch?

For those applying to YC today… Describe your product in exactly one sentence. Explain it to me like I’m 12 years old. If it sounds interesting I will roast your application…

Whether you're a creator who needs blog posts,tweets,and articles on demand,or a power user who wants perfectly structured prompts for ChatGPT, Claude,or any AI tool Hivid handles both. It free for 3 days and see how fast "good enough" becomes great. hivid.site

I'm presenting at a university tomorrow about my journey in building and entrepreneurship. Reserved a section on what I'd tell my 22-year-old self. If you were 22 again, what's the one piece of advice you'd give yourself? In building or otherwise