Blake Niemyjski

VP @codesmithtools / VP @exceptionless / Principal Engineer @LiaisonEDU - Dad, ❤ OSS, Distributed Newbie, Home Automation, Pilot, Snowboarder & Bee Keeper!

[Paul Solt @PaulSolt]

Codex now supports KEYBOARD SHORTCUTS for Environment Run Actions! 🎉

Set your Environment Action 1 to run your app (without opening Xcode!).

I removed the "Reload Browser Pages" shortcut so that I can assign a simple two key press: ⌘ + R

... because I'm not a web developer...

If you don't already have a run action, download my AppCreator skill to use Makefiles with your iOS or macOS projects.

Then just add "make" as your Environment Run Action. Link in thread.

[Dave W Plummer @davepl1968]

fopen() is magic! Here's what you've been missing all these years....

[Tibo @thsottiaux]

It’s time to fly!

Excited to share the first short brand film for Codex. Catch it airing during Game 1 of the NBA Finals tonight.

https://t.co/1J4Epczj8T

[Blake Niemyjski @blaken]

@brockpierson XP

[Blake Niemyjski @blaken]

@davidfowl @aspiredotdev That is nice, I just never understood why it couldn’t just fix it automatically instead of logging it 3 times.

[Charly Wargnier @DataChaz]

🚨 Karpathy was right. He warned that 90% of AI advice dies in 6 months.

Spoiler: most tools won't even survive 90 days.

What actually compounds?
> Context engineering
> Tool design
> Orchestrator-subagent patterns
> Eval discipline
> MCP as the protocol layer
> The harness mindset (harness > model)

Your plan if you have less than 2 hours today:

Watch this 40-minute video from the master.

Then get hands-on with this brilliant guide by @0xMortyx on how to build your first AI Agent in Claude in 30 minutes 👀 ↓

[Aspire 💫 @aspiredotdev]

Aspire 13.4 has landed 🚀 The TypeScript apphost is officially GA! Plus 500 or so other PRs of goodies 🤌

🔎 Read the blog for the highlights 👉🏻 https://t.co/jJnNvLYx7T
🤯 Check out the What's New for all the deets 👉🏻 https://t.co/VxQ6rn4M3q

[Mr. Buzzoni @polydao]

KARPATHY WAS RIGHT. THIS 40-MINUTE Y COMBINATOR LECTURE PROVES IT

Karpathy said we're in the 1960s of AI - most people using Claude Opus 4.8 are still acting like it's just a search engine

> software 3.0 - LLMs as operating systems, not chatbots
> autonomous agents that run entire workflows without you watching

the 32 skills in this article are how you actually cross that line

bookmark this 👇

[David Fowler @davidfowl]

We've been building up a catalog of skills that @aspiredotdev team uses to drive up the quality on changes made by agents (we're all using them). First, the 3 most important skills:

code-review
https://t.co/mRn1831ImL

pr-testing
https://t.co/Sng8Pk5IOz

create-pr
https://t.co/vIHDWWDlUg

[Peter Steinberger 🦞 @steipete]

I do this with codex all the time. Ask it to review code for bugs and it will tell you all good, tell it there is a bug and it will LOOP AND LOOP and will find issues.

[Guinness Chen @guinnesschen]

If you ever get tired of managing your Codex threads, just let Codex manage itself! Codex can now create threads, search them, organize them, pin the important ones, and spin up worktrees for parallel tasks.

[Blake Niemyjski @blaken]

@notparbez @burkeholland @code It’s been a bug, but part of me says it’s a cost savings and will be fixed when it goes to token usage

[Fayaz Ahmed @fayazara]

One of my favorite UI elements from the Cloudflare dashboard is now available for everyone to use in Kumo UI

https://t.co/ZcrZ8jMkHk

[Blake Niemyjski @blaken]

@Zafir88538734 @TeslaTrackerUS @cybrtrkguy Yeah we need to community notes this because even sloth will speed, complete lies on standard doesn’t speed. Bring back set speed limits

[Peter Steinberger 🦞 @steipete]

Folks: when you write skills, ask your agent to be token efficient, relax grammer. I see too many skills that write books in the skill description, and all that crap is loaded into every context.

I wrote a skill that finds the worst offenders. https://t.co/kfaaJpxMXE

[.Morten 🪁🗺💻 @dotMorten]

Blogged: Automatically getting API difference diagrams in your .NET PRs https://t.co/YJNgLAFnY8 #dotnet

[Vaibhav Sisinty @VaibhavSisinty]

Perplexity just open-sourced the tool they use internally to keep their own developers safe. 😨

It's called Bumblebee. It runs quietly on a developer's laptop and checks for any sneaky code, suspicious browser plugins, or AI tools that might be silently leaking access to your data.

It covers Claude Code, Codex, Cursor, all of it.

Here is why this matters now.

For the last six months, hackers have been quietly slipping malicious code into the free building blocks that almost every app in the world is built on.

When a developer installs one of these poisoned pieces, the attacker gets a backdoor into everything that developer touches.

Including their AI tools and the keys that unlock them.

Most security tools defend the finished product. Bumblebee defends the person building it.

An independent security researcher read through the entire code and confirmed it is clean.

No hidden tracking. No data collection. No backdoors.

For two years, AI coding tools shipped with zero security defenses around them. Perplexity just shipped one. Free.

Worth installing if you build anything with AI.

[Parth Jadhav @ParthJadhav8]

@cursor_ai https://t.co/0IfHCkDbNY