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Jay 🔔

@jaycooperbell.dev
2.4K followers 311 following 652 posts

CTO/Co-Founder Trellis.org | @evermind.sh | Angular GDE | Nx Champion | Magic Player 🌐 jaybell.me

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Jay 🔔 @jaycooperbell.dev · 23/09/2026
Ya a little hard to tell in that case. I in used opus 5.5 all day yesterday and it performed really well. Hard to tell if it's fable 5.1 level or not though like they claim
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Jay 🔔 @jaycooperbell.dev · 23/09/2026
Have you worked with Sol 6 and/or Opus 5.5 to see where they fit in yet? Based on how they are presented they would replace the first two.
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Jay 🔔 @jaycooperbell.dev · 18/09/2026
Using Jev from @typesafeai.bsky.social to improve matching performance, accuracy and cost in our automated @blackbaud.bsky.social RE NXT CRM integration. www.linkedin.com/pulse/jev-vs...
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Jay 🔔 @jaycooperbell.dev · 17/09/2026
I can't wait until I get to interview me.
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Jay 🔔 @jaycooperbell.dev · 07/09/2026
Trying to convince my friend to start a Warhammer podcast with me.
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Manfred Steyer @manfredsteyer.bsky.social · 02/09/2026
What are the possibilities of Agentic UI? What are typical patterns? How to avoid a chat with a text wall? I discussed these questions with @jaycooperbell.dev and @mhartington.io 👇
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Jay 🔔 @jaycooperbell.dev · 02/09/2026
Oh this so checks out.
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Brandon Roberts @brandonroberts.dev · 12/08/2026
🚀 @analogjs.org 2.7 is out! ⚡️ Server Functions: typed, validated server ops with @angular.dev DI 🌊 Streaming SSR: works w/Incremental Hydration 🤖 Agent-ready projects: AGENTS.md + an Agent Plugin 📖 Docs now powered by Analog And more! 👇 dev.to/analogjs/ana...
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Jay 🔔 @jaycooperbell.dev · 11/08/2026
Very glad to hear that.
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Jay 🔔 @jaycooperbell.dev · 11/08/2026
Just hook em up to an MCP and boom! I used Claude + cadquery + Blender + Orca Slicer hooked together in a pipeline with MCPs and CLIs and I was able to build an STL for 3d printing!
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Jay 🔔 @jaycooperbell.dev · 11/08/2026
Enjoy the grass Josh, you deserve it! Incredibly happy that we were able to cross paths a few times (although not yet in person). Hope to see you in the community again, you will be missed, both emotionally and technically.
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Jay 🔔 @jaycooperbell.dev · 07/08/2026
In the last 365 days Trellis.org has saved a mind blowing 8 years and 174 days of computation time with @nx.dev Cloud! 🤯 (just in CI!) That massive bar is our graphql-codegen target. Interestingly our computation savings were very very swingy from Aug 2025-Nov 2025 and then it drops down.
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Jay 🔔 @jaycooperbell.dev · 05/08/2026
Oh god I didn't even check that 🙈
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Jay 🔔 @jaycooperbell.dev · 05/08/2026
fixed!
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Jay 🔔 @jaycooperbell.dev · 05/08/2026
Honestly didn't even know I added on 😅 Will fix! thank you!
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Jay 🔔 @jaycooperbell.dev · 05/08/2026
Thanks Logan!
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Jay 🔔 @jaycooperbell.dev · 05/08/2026
Hahaha damn! Nice attention to detail. That is definitely not a design choice, that is an artifact of having AI help me with the design cause my brain has yet to be able to understand how to do CSS well!
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Jay 🔔 @jaycooperbell.dev · 05/08/2026
New personal site design! jaybell.me
jaybell.me
Jay Bell
Jay Bell is a CTO, co-founder of Trellis.org, Angular GDE, and Nx Champion. He co-hosts The Angular Plus Show and This is Tech Talks.
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Jay 🔔 @jaycooperbell.dev · 02/08/2026
Thanks! Thankfully I have a lot of experience with testing in my professional life! But it gets a little unruly when suddenly the agent is writing lots of tests. Reading those resources now and I just passed them off to me team at work as well!
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Jay 🔔 @jaycooperbell.dev · 02/08/2026
I'm currently working on a greenfield project, going the full vibe coding route to see how far I can get, i have a ton of e2e tests, but almost no confidence that they aren't flaky or fragile at all. Skill issue? Maybe. But still, not sure how much value they are providing currently.
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Jorge Vergara @jorgevergara.co · 31/07/2026
Google Play won't let me launch RoundForge (my free, combat-sports interval timer) until 12 testers run the beta for 14 days. I have 4. If you have an Android: send me your Google email, I'll add you + send an opt-in link. Install, keep it 2 weeks, done 🥊 Reposts help!
Interval timer app screenshot showing the dashboard with some stats and quick actions
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Jay 🔔 @jaycooperbell.dev · 01/08/2026
DM'd!
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Jay 🔔 @jaycooperbell.dev · 31/07/2026
Working on what 👀
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VoidZero @voidzero.dev · 30/07/2026
From @angular.dev v22.1.0 on, Rolldown will be used as the default bundler! Full @vite.dev integration when? 👀 github.com/angular/angu...
github.com
perf(@angular/build): default chunk optimization to use Rolldown by clydin · Pull Request #33397 · angular/angular-cli
Now that Rolldown is stable, swap the default chunk optimizer from Rollup to Rolldown to utilize native compilation benefits and optimize heap memory usage. Rollup remains an optional peer dependen...
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Jay 🔔 @jaycooperbell.dev · 22/07/2026
You are doing enough and you ARE enough Santosh. Never forget that.
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Jay 🔔 @jaycooperbell.dev · 14/07/2026
I did an analysis on our AI (Claude Code) use over the last 6 months! TLDR: Very positive results! tech.trellis.org/blog/2026-07...
tech.trellis.org
Is Increasing AI Usage Increasing Code Review Burden? - Trellis Tech Blog
Monthly output rose ~55%. Review friction per reviewed PR stayed flat.
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Jay 🔔 @jaycooperbell.dev · 11/07/2026
Will be coming to you for all my jetbrains issues now @mhartington.io, you can blame Jan.
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Jay 🔔 @jaycooperbell.dev · 10/07/2026
@wordman.dev you are off the hook, I will be going straight to @mhartington.io now.
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Mike Hartington @mhartington.io · 10/07/2026
New job alert! I've joined @jetbrains.com!
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Jay 🔔 @jaycooperbell.dev · 09/07/2026
Ya I have seen a lot online right now of using Fable as the orchestrator and GPT 5.5 xhigh as the implementors and stuff like that. I am not quite at that level right now haha. Command Code works really well and they have done a lot of harness engineering to make all the open models awesome.
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Jay 🔔 @jaycooperbell.dev · 09/07/2026
Kind of wild honestly, like its significantly worse from an initial experience. Haven't used OpenCode in quite a while, but I use @commandcode.ai when my CC subscription runs out of usage.
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Jay 🔔 @jaycooperbell.dev · 09/07/2026
I have a new appreciation for the Claude Code CLI after using Codex for like 5 minutes.
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Jay 🔔 @jaycooperbell.dev · 08/07/2026
Our resident Trellis.org frontend expert, @stonepaw.bsky.social, just wrote his first blog post on the Trellis Tech Blog! If you are an @angular.dev dev, a fan of Signals, or just want to learn about auto-saving forms, read this! tech.trellis.org/blog/2026-07... #angular #signals #typescript
tech.trellis.org
Auto-Saving with Signal Forms - Trellis Tech Blog
Implementing type-safe auto-saving of Signal Forms as a functional schema builder pattern.
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Jay 🔔 @jaycooperbell.dev · 02/07/2026
I keep on clicking to focus back in and then inadvertently clicking something that is now apparently clickable 🙃 For nothing ever being clickable in the term prior, this is a huge UX change.
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Jay 🔔 @jaycooperbell.dev · 01/07/2026
I very much dislike being able to click in the terminal when running Claude Code, the number of times I have clicked something I didn't want to...
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Jay 🔔 @jaycooperbell.dev · 01/07/2026
I read this as translucent and was like uhhh, you should go see a doctor.
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Jay 🔔 @jaycooperbell.dev · 28/06/2026
Starred!
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Jay 🔔 @jaycooperbell.dev · 19/06/2026
Oh ya for sure! Will do!
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Jay 🔔 @jaycooperbell.dev · 19/06/2026
Just read Loggerheads by @kettanaito.com. Was a great (and quick!) read. Fantastic little short story. Read it in one sitting. www.amazon.ca/Loggerheads-...
amazon.ca
Loggerheads: Archer, Zak: 9788011066321: Books - Amazon.ca
Loggerheads: Archer, Zak: 9788011066321: Books - Amazon.ca
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Jay 🔔 @jaycooperbell.dev · 17/06/2026
open.spotify.com/track/0fVUKr...
open.spotify.com
This Bitter Earth / On The Nature Of Daylight
Clyde Otis, Max Richter, Dinah Washington, Louisa Fuller, Natalia Bonner, John Metcalfe, Philip Sheppard, Chris Worsey · The Blue Notebooks (15 Years) · Song · 2018
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Jay 🔔 @jaycooperbell.dev · 16/06/2026
Was just thinking about you today when using WebStorm.. Come to the light side!!!
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Jay 🔔 @jaycooperbell.dev · 14/06/2026
Oooh! Always looking for a good book. Even though I have a backlog cause I've kind of fallen out of reading recently 🙁
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Jay 🔔 @jaycooperbell.dev · 13/06/2026
Which book? 👀
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Jay 🔔 @jaycooperbell.dev · 03/06/2026
Got access to @nx.dev Task Sandboxing today. Lets just say our caching inputs were NOT setup correctly 😅. Way to go Nx team, this feature is awesome.
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Ai Dev Craft @ng-conf.bsky.social · 03/06/2026
#Angular22 is here—and it’s more than just another release. 🚀 Signal forms, #Angular Aria, #AI-ready workflows, & what’s next for development. Join us & Mark Techson to break it all down! #ngconf #AI 📺https://youtu.be/CnQr8bAYKKY 🍎https://apple.co/43dgPxy 🟢https://bit.ly/3QgGgvc
The Angular+ Show logo. “Season 11 Episode 11 Angular 22 Has Landed — And It’s Built for the Future with Mark Techson”  Photos of Hosts  in the style of a Photo Booth:  Lara Newsom, Jan-Niklas Vortmann, Jay Bell and Brian Love."  Photo of Mark  in the style of a polaroid picture.
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Jay 🔔 @jaycooperbell.dev · 02/06/2026
Content-Security-Policy is really confusing (or at least it is for me)
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Jay 🔔 @jaycooperbell.dev · 28/05/2026
...90% of nonprofit leaders are worried about staff burnout...one in ten leaders say burnout isn't affecting their team...nearly seven in ten nonprofit employees said they'd consider leaving this year...too much responsibility, not enough support. www.linkedin.com/pulse/3-pers...
linkedin.com
The 3-Person Event Team That Raised $1.5M
"We just don't have the people." "Our team is already stretched.
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npmx @npmx.dev · 23/05/2026
this is what open source is all about 🤍 > Looking back at this past year, it’s crazy how much has changed. From my very first small PR to becoming a maintainer in multiple projects. I’ve learned that communication is key in Open Source, and when people work together openly, incredible things happen
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Jay 🔔 @jaycooperbell.dev · 22/05/2026
This ended up WAY longer than I was originally intending, turns out I had a lot to say on the topic. How an event-loop issue turned into a multi-week review of per-key revivers, schema-driven walkers, simdjson, V8 codegen, and custom pipeline for our Model Cache. tech.trellis.org/blog/2026-05...
tech.trellis.org
Surviving the (parsing) Storm - Trellis Tech Blog
How we sped up our Model Cache by over 2x and dropped the number of operations by almost 7x.
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Nikolay A. @kolyasya.bsky.social · 21/05/2026
Moved my repos too 💪
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