Andy Croll
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andycroll.bsky.social
Andy Croll
@andycroll.bsky.social
1.6K followers 67 following 200 posts
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Reposted by Andy Croll
briancasel.com
Agent OS v3 is out.

Legacy codebases are a challenge in AI development. Your agents can scan your files, but not the knowledge and decisions baked in between the lines.

Agent OS enhances (doesn't reinvent) what Claude Code does well.

New video & docs here: buildermethods.com/agent-os
January 22, 2026 at 4:25 PM
andycroll.bsky.social
Array#rfind arrived with Ruby 4.0
andycroll.com/ruby/find-t...
January 12, 2026 at 12:00 PM
andycroll.bsky.social
Opening the CFP for Brighton Ruby 2026.
All the videos are up for last year.
Tickets still on sale.
Please sponsor. (PLEASE)
January 12, 2026 at 8:00 AM
andycroll.bsky.social
Year in Review: 2025
andycroll.com/other/year-...
January 1, 2026 at 1:45 PM
andycroll.bsky.social
Back on the writing horse, in time for Xmas.
except_on for validations
andycroll.com/ruby/except...
December 23, 2025 at 1:14 PM
Reposted by Andy Croll
chadfowler.com
The Death and Rebirth of Programming
Programming didn't die all at once. There was no single moment, no dramatic obsolescence event. Instead, something quieter happened: the core constraint that shaped software for seventy years dissolved. Writing code stopped being the hard part.
aicoding.leaflet.pub
December 22, 2025 at 5:43 PM
andycroll.bsky.social
Could not be more deserved. Hooray for @marcoroth.dev
rubyonrails.org/2025/12/17/...
Congrats Marco Roth: 2025 Rails Luminary
We are stoked to share that the Rails Core team has announced Marco Roth as the 2025 Rails Luminary.
rubyonrails.org
December 18, 2025 at 11:13 AM
andycroll.bsky.social
If you wanted to have loved one buy you a t-shirt because “you’re impossible to buy for” today is your last day to get it for Xmas.
rubytshirts.com
Ruby T-shirts
Matz is nice, and so are these excellent shirts. Ships worldwide.
rubytshirts.com
December 15, 2025 at 12:00 PM
andycroll.bsky.social
I made some lovely Ruby loving foxes on a t-shirt in tribute to the long lost _why.
rubytshirts.com/products/_w...
_why the foxes
What a racket. With love to Ruby's missing spirit animal. • 100% combed and ring-spun cotton (Heather colors contain polyester) • Fabric weight: 4.2 oz./yd.² (142 g/m²) • Pre-shrunk fabric • Side-seamed construction • Shoulder-to-shoulder taping • Blank product sourced from Nicaragua, Mexico, Honduras, or the US Discla
rubytshirts.com
December 8, 2025 at 12:00 PM
Reposted by Andy Croll
flavorjon.es
It's finally happening. I'm going to Brighton Ruby next June!

ti.to/goodscary/br...
Brighton Ruby 2026
The single day, single track Ruby conference for folks who like to go to the seaside, learn things and hang out with fellow Rubyists.
ti.to
December 6, 2025 at 4:41 PM
andycroll.bsky.social
Or did the Joker ask the question first?
rubytshirts.com/products/wh...
Why So Serious
Fundementally a bunch of jokers. • 100% combed and ring-spun cotton (Heather colors contain polyester) • Fabric weight: 4.2 oz./yd.² (142 g/m²) • Pre-shrunk fabric • Side-seamed construction • Shoulder-to-shoulder taping • Blank product sourced from Nicaragua, Mexico, Honduras, or the US Disclaimer: The fabric is sligh
rubytshirts.com
December 5, 2025 at 7:57 PM
andycroll.bsky.social
Logan Roy said it best about the Rubyists
rubytshirts.com/products/no...
Not Serious Rubyists
I love you ruby people. But.• 100% combed and ring-spun cotton (Heather colors contain polyester)• Fabric weight: 4.2 oz./yd.² (142 g/m²)• Pre-shrunk fabric• Side-seamed construction• Shoulder-to-shoulder taping• Blank product sourced from Nicaragua, Mexico, Honduras, or the USDisclaimer: The fabric is slightly sheer a
rubytshirts.com
December 5, 2025 at 7:55 PM
Reposted by Andy Croll
tenderlove.dev
GitHub was the answer to "what if sourceforge didn't suck?" I'm kind of worried we're getting a new sourceforge 😢
December 5, 2025 at 12:27 AM
andycroll.bsky.social
So I watched 2001: A Space Odyssey (again) last week. Stately, yes. Bananas, yes. Visually inspiring, also yes.

So. T-shirts. Three of them.
Close-up of a helmeted face with blue eyes reflected in multicolored streaks of light, evoking a contemplative, spacefaring mood.
November 17, 2025 at 5:57 PM
andycroll.bsky.social
And this equally applies to conference talks. You need a story and not just release notes.
www.joanwestenberg.com/p/why-stori...
Why Stories Make You Smarter Than Self-Help Books
The Smartest People You Know Still Read Novels
www.joanwestenberg.com
October 31, 2025 at 5:00 PM
andycroll.bsky.social
In the words of the wise monkey Rafiki from the Lion King.

brightonruby.com
"It is time"—Rafiki from the Lion King
October 20, 2025 at 11:00 AM
Reposted by Andy Croll
drbragg.dev
It's scary getting up on stage. Especially when some guy in a sparkly jacket is throwing crazy ruby at you. Being able to give some prizes at the end is the least I can do. Big thanks to our prize sponsors:
@honeybadger.io
@judoscale.com
@joemasilotti.com
@andycroll.bsky.social
October 10, 2025 at 3:02 PM
andycroll.bsky.social
If I put together a 2/3day Rails-oriented, indie business/small team technical leader MICRO-conference for early/mid-Jan in the UK countryside… would that sound interesting?

Everyone brings one strong opinion and one problem and we take it in turns to help each other out.
October 10, 2025 at 1:21 PM
Reposted by Andy Croll
drbragg.dev
The game show works best when I have great contestants and I had some GREAT contestants this time. They brought the energy and the fun!
October 9, 2025 at 2:32 PM
andycroll.bsky.social
They'll be there for you.
rubytshirts.com/products/ru...
Ruby Friend
They'll be there for you. When the CI starts to fail. • 100% combed and ring-spun cotton (Heather colors contain polyester) • Fabric weight: 4.2 oz./yd.² (142 g/m²) • Pre-shrunk fabric • Side-seamed construction • Shoulder-to-shoulder taping • Blank product sourced from Nicaragua, Mexico, Honduras, or the US This produ
rubytshirts.com
October 2, 2025 at 11:00 AM
Reposted by Andy Croll
valeriecodes.bsky.social
Freedom, another member of the Ruby Central Board, wrote this post, but it closely aligns with my feelings and experiences as well.

apiguy.substack.com/p/a-board-me...
A board member's perspective of the RubyGems controversy
What a week it's been as a Ruby Central Board Member.
apiguy.substack.com
September 21, 2025 at 7:30 PM
andycroll.bsky.social
It’ll be missed. Because it was so carefully curated.

We do these things out of love.
adrianthedev.com Adrian Marin @adrianthedev.com · Sep 19
Friendly.rb is taking a break.
We've had quite a few questions about that and wanted to share them publicly.

blog.adrianthedev.com/friendly-is...
September 19, 2025 at 3:35 PM
Reposted by Andy Croll
andycroll.bsky.social
Hurt Me Plenty
rubytshirts.com/products/hu...
Hurt Me Plenty
This t-shirt is shareware. This t-shirt is everything you've dreamed of and more. It feels soft and lightweight, with the right amount of stretch. It's comfortable and flattering for all. • 100% combed and ring-spun cotton (Heather colors contain polyester) • Fabric weight: 4.2 oz./yd.² (142 g/m²) • Pre-shrunk fabric •
rubytshirts.com
September 16, 2025 at 7:12 PM
andycroll.bsky.social
Hurt Me Plenty
rubytshirts.com/products/hu...
Hurt Me Plenty
This t-shirt is shareware. This t-shirt is everything you've dreamed of and more. It feels soft and lightweight, with the right amount of stretch. It's comfortable and flattering for all. • 100% combed and ring-spun cotton (Heather colors contain polyester) • Fabric weight: 4.2 oz./yd.² (142 g/m²) • Pre-shrunk fabric •
rubytshirts.com
September 16, 2025 at 7:12 PM
andycroll.bsky.social
Moved house. After three brutal days of boxes it’s a new (birthday) walk to work along the seafront. Brighton is an excellent (albeit windy) city, I encourage all my friends to move here.
The sea off Brighton, above the marina Brighton Palace Pier
September 12, 2025 at 6:41 AM