
Dave Kerr
@hackerrdave
fiddler & engineer
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Startup Advice: "If you can keep your head when all about you are losing theirs its just possible you haven't grasped the situation."
It’s now 27 years since I was made redundant and given a few grand. I decided that if I was careful, I could live off the money for 6 months trying to become a comedian before I had to get another job. I was 37. Worth a punt.

Claude is now available in Slack. Chat with Claude through DMs, tag @.Claude in threads, or use the AI assistant panel—with access to web search, document analysis, and your connected tools.
I think it's fair to say that PlanetScale is known for having a high bar for hiring. What you probably don't know is that we don't do coding interviews.
If AI ends in the mother of all busts, it won't be because people were enthralled by short-form videos. It will be because people were enthralled by the "good stuff," the olympic-level math, etc. that convinced them there was a path to productive intelligence.
More on my blog, including this hopefully reassuring note for anyone afraid of the impact this will have on their career as a programmer simonwillison.net/2025/Sep/29/ar…

Cursor can now control your browser. Agent can take screenshots, improve UI, and debug client issues. Try our early preview with Sonnet 4.5.
We asked every version of Claude to make a clone of Claude(dot)ai, including today’s Sonnet 4.5… see what happened in the video
Introducing Claude Sonnet 4.5—the best coding model in the world. It's the strongest model for building complex agents. It's the best model at using computers. And it shows substantial gains on tests of reasoning and math.

When Claude Code fetches Bun’s docs, Bun’s docs now send markdown instead of HTML by default This shrinks token usage for our docs by about 10x

Been at GitHub for nearly 13 years and I'm pretty sure this request is more than 10 years old... 🆕Comment on unchanged lines in any file inside a Pull Request is now available Gotta keep the core of GitHub getting better every day. 🫡
Ok, let me try explaining (mostly to myself) what the x402 protocol, launched by Coinbase, means: ✔️ When you type a URL into the browser, your browser ("the client") tries connecting to a server that hosts the website (e.g., Bloomberg). If it successfully connects, the server…

🚀 Big news 🚀 @coinbase and @cloudflare will be launching the x402 Foundation to establish x402 as the universal standard for AI-driven payments. Legacy payment systems weren’t built for machines, but x402 changes that by embedding payments directly into web interactions,…

HERE IS THE MERRILL REESE CALL OF THE GAME WINNING BLOCK GOOSEBUMPS
we are in for a few years of security nightmares

I spent the summer of 2004 writing documentation for the first release of Rails. Twenty years later, I'm doing the same for Omarchy. Good docs seed good vibes right from the get go. manuals.omamix.org/2/the-omarchy-…
Half the timeline thinks AI is a bubble/statistical parlor trick and the other half thinks if you haven't secured generational wealth by next Thursday you'll be trapped in a permanent underclass ruled by techno-capital overlords who command drone armies. Probably a middle ground
FYI ... ChatGPT Plus (or Pro) users who log in to Codex CLI get _a lot_ of free GPT-5 tokens. They're not clear on what are the actual rate limits but with my $20 Plus sub I can go for a couple of hours at a time.

We launched a Claude Code learning mode! Claude Code not only makes you more productive, but can now also help you get better at coding. Whether you're a CS student or seasoned programmer, it will push you to think deeper about the code you're generating.
As a young parent I heard “it goes by so fast” loads but never really listened. Then an old guy’s face showed me the difference between ‘hearing advice’ and *feeling* Truth. I was pushing a stroller down the sidewalk and had my three kids with me. An older guy walks past and…

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