AI Builder & Medical Student
South Korea
Joined April 2026
- Tweets1.4K
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- Followers486
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Hey X! 👋
I’m Sungyeob, a medical student and startup founder from South Korea 🇰🇷
I’m passionate about AI, technology, entrepreneurship, and building things that matter.
Currently building DirectN and exploring new ideas.
Here to share my journey, learn, and connect with fellow founders, developers, and builders around the world.
Let’s connect! 🚀
Sungyeob Lim retweeted
Hi my friends! I created a new Seoul 3D Map video to participate in #OpenAISideQuest at OpenAI DevDay 2026! It includes English narration and subtitles. Thank you for watching!
I hope this will be helpful
If you are wondering whether your website is affected, we have packaged a Codex skill to help check.
Point your Codex at this repo to guide you through it: github.com/openai/php2shell-…
One of the hardest intellectual skills is recognizing when your ego is filtering criticism.
Sometimes disagreement is just noise.
Sometimes it’s exposing a flaw in your thinking.
And sometimes the only reason you call it noise is because you don’t want it to be true.
#buildinpublic
Being open-minded doesn’t mean treating every opinion as equally valid.
It means being willing to change your mind when presented with better reasoning or evidence.
The goal isn’t to agree with everyone.
It’s to get closer to the truth.
Let’s #connect
Someone telling you you’re wrong is not the same as showing you where you’re wrong.
Good criticism gives you something to examine.
Noise just demands a reaction.
Learning to distinguish the two is one of the most underrated skills in critical thinking.
#buildinpublic
Something serious happened I guess
Effective Immediately, all organizations using PHP for their systems are advised to be prepared for an update addressing two critical vulnerabilities. PHP is widely used for web applications. These vulnerabilities often provide a direct path to the server's file system or database. If an immediate update is not feasible, it is recommend that organizations take the system offline until it can be fully mitigated. NSA will follow up shortly with more specific guidance.
Not all disagreement is equally valuable.
Some people challenge your assumptions with reasoning and evidence. That’s signal.
Others disagree without understanding the problem or explaining why. That’s noise.
But here’s the difficult part:
How do you make sure your ego isn’t deciding which is which?
Sometimes the criticism that makes you most uncomfortable is exactly what you need to hear.
#buildinpublic
Good, maybe the future version of Dispatch?
Have you ever tried Aside, the agentic brower?
It is popular in Korea, and YC-backed company. I wonder you guys have any experiences of using it.
aside.com/
A mediocre product with great distribution can reach millions.
A great product with zero distribution can disappear without a trace.
The uncomfortable truth is that building something useful isn’t enough.
People have to discover it.
#buildinpublic
Tibo, the great chef of OpenAI
What are you cooking now?
I genuinely love u! FOR SURE
@thsottiaux
🤖 Made with AI
Sungyeob Lim retweeted
Told 500 of you I’d start sharing my builds, so here’s the first update 🐧
I asked my agent to turn Gexpense web into a React Native mobile app. It got surprisingly far in one shot, then needed some UI polishing.
Might share the prompt I used too. Monorepo + adapter pattern so we reuse the logic, not rebuild everything. If you know, you know ;)
Quick demo below 👇
0 → 500 in a few weeks
A few weeks ago I had 0 followers and no idea who would care about this 🐧.
Turns out the void had 500 people in it (thats you guys hehe)
For anyone new here, I’m Pengwu (not my real name). I work a 9–5 and build side projects after work, trying to turn them into a business.
> My salary is still winning (i really want to quit, sad).
From now on to keep myself accountable, I will be sharing the journey midweek and Sunday: what shipped, what flopped, and what I learned.
Who else is doing the 9–5 + side project juggle?
Drop what you’re building. Let’s connect!
(i know i've many of these, but 500 is a good milestone to do another xD).
BRO, YOUR LAPTOP SHOULDN’T DECIDE WHAT YOU’RE CAPABLE OF BUILDING.
We have cloud storage.
We have cloud software.
We even have AI running in the cloud.
But when you need more RAM, a better GPU, or a faster CPU?
You’re still expected to buy another machine.
Why?
What if your personal computer could simply grow with your needs?
That’s the problem I’m trying to solve with my project.
#buildinpublic
What if your next PC wasn’t a physical device?
I’m building a personal Windows PC in the cloud that you can connect to from anywhere.
Same environment. Different devices. Computing power on demand.
#buildinpublic
🤖 Made with AI
Sungyeob Lim retweeted
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🎙️ ElevenLabs Startup Grants: 12 months of free AI voice, around 680 hours of audio. elevenlabs.io/grants-applica…
📝 Notion for Startups: 6 months free on the Plus plan, AI included. notion.com/startups
