Joel Castillo

Builder. Laid off May 2026. Shipping roombai, separalo and whatever I need next with Claude + t3code. Viva la Vida

[Joel Castillo @joelcastillo]

Built "Snip" small replacement for the windows snipping tool which sucks.

It hijacks the Win+Shift+S shortcut and adds:
- Scrolling screenshots (No more blurry screenshots on long pages)
- Video
- Screenshots(Duh)
- A Clipboard Win+Shift+A

Open source too :)

Link below:)

[Joel Castillo @joelcastillo]

Man I love Opus

[Joel Castillo @joelcastillo]

God, I'm trash

[Sid @SidChatterjee]

A lot of folks have asked for Spend management limits on @Cloudflare for some time now

I've spent the last three months rebuilding our billing usage platform to enable this for our product catalog starting with Workers and Durable Objects and I'm pleased to give you a quick sneak peek 🫣

Shipping on Cloudflare for humans and agents shortly along with an engineering deep dive on how we did it

Send me or @irvinebroque a DM if you want to try it early

[Joel Castillo @joelcastillo]

What an insane concept. I've installed nightly builds as soon as they release for a while now, and it's usually 1 a day with sometimes being multiple releases per day.

I've had 0 regressions whatsoever, 0 broken builds, 0 issues.

The t3 team is straight up cooking, and showing big companies that is truly possible to move fast and move safely.

0 excuses.

[Theo - t3.gg @theo]

T3 Code version 0.1.3 is now live! Stable is fully caught up to the nightly :)

Pretty small release, here's what's changed since v0.1.2:

- Complete redesign of the app to look significantly better
- Share threads with a guest in 2 clicks
- Opening a thread loads 85% less data, and cold connects send up to 93% less.
- Cmd+K search is comically better.
- T3 Connect promotes to LAN for using other boxes on same network
- File preview overhaul, now supporting office files, mermaid diagrams, sqlite dbs, audio files, pdf annotations, svg attachments, and more
- T3's agent instructions are 60% shorter, and the MCP tool schemas are a third smaller.
- "steer" is default (queueing sucks)
- More reliable PR linking
- You can now add custom instructions for title gens
- Muse Code now shows in usage tab
- All emdashes removed forever
- Various accessibility wins for screen reader support
- Code highlighting got way faster with @.pierre/highlights
- PR timeline, code tab, summary and search got way faster
- Streaming text updates are batched, so long runs use less CPU
- ~480 other things got merged that I forgot lol

...okay maybe it's a big release.

[Joel Castillo @joelcastillo]

@Larryjay41 jesus christ, FIRE

[Joel Castillo @joelcastillo]

@tonychang430 @poteto @bot Me in t3code hitting it every 2 hours

[Joel Castillo @joelcastillo]

@theo drop everything

[Joel Castillo @joelcastillo]

@poteto @BenSolisHelser @leerob @bot Oh this has been happening too me too

[Joel Castillo @joelcastillo]

Claude duet access and a banked reset.

Life's good

[Joel Castillo @joelcastillo]

https://t.co/m8Ok7odSmM

[Joel Castillo @joelcastillo]

if you use windows and hate the snipping tool you should use snip :) is better :) open source too :)

[Joel Castillo @joelcastillo]

I've been telling myself that I HAVE to be a millionaire by 27.

I'm 26, unfortunately for everyone I'll become a millionaire next year.

Posting this so I can quote in a year

[Joel Castillo @joelcastillo]

YO HOOK A BROTHER UP

[@jason @Jason]

Do not quote retweet this or I will be forced to give people $42.0 or $420!

This is not engagement farming, it’s 1am and I’m bored AF and we all deserve a 420 break!

Do not quote retweet or you might get smashed with X Money

[Joel Castillo @joelcastillo]

The 5hr usage thingy explains why I BLASTED thru my limits last week and I've barely chipped at em this week.

[Joel Castillo @joelcastillo]

@RhysSullivan @tszzl interesting

[Joel Castillo @joelcastillo]

@Jason Hello :)

[Joel Castillo @joelcastillo]

Two world class engineers(Thariq and Anthony) leaving Anthropic is crazy

[Joel Castillo @joelcastillo]

@bensenescu say less 🫡

[Joel Castillo @joelcastillo]

@theo thank GOD, i've been battling with the search for older threads. You guys are insane.

[Joel Castillo @joelcastillo]

@thsottiaux @_jayyy18_13k