Jan Ole Suhr (@janole) header
Jan Ole Suhr (@janole) profile picture

Hands-on, open-minded Product Engineer since 1986. Entrepreneur at heart. Former InsurTech CTO/CPO. Creator of Gravity, the social net app for Nokia w/ 1M users

Berlin, Germany
Joined July 2007
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GLM 5.2 has taken control of a tmux session with Claude Code in it. It's watching and waiting for approval prompts. Then it's trying to approve or reject them, but that tool call itself is running through another GLM 5.2 approval agent 🤯 The fact that I can tweet this means neither of those agents accidentally wiped my MacBook yet ... 😂🤣
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Jan Ole Suhr retweeted
In 10 years as CEO of two startups, I can't count how many times engineers pitched me a complete rewrite of our codebase. It always reminded me of Steve Blank's Startup Suicide: Rewriting the Code and Joel Spolsky's Things You Should Never Do. Joel compared rewriting software from scratch to demolishing a building instead of renovating it. I always agreed and pushed back hard on rewrites. But AI has completely changed my mind. When you can coordinate a swarm of thousands of coding agents, the economics are completely different. Suddenly there's an enormous premium on having an agent-native codebase: super fast CI, minimal dependencies, clean architecture, every decision documented, and everything optimized for agents rather than humans. For the first time in my career, I'm starting to think a complete rewrite might actually be the right call.
The thing with AI: You REALLY can replace existing software with something that is much faster in performance, much cheaper to operate, as reliable (or more!) as before, with shockingly little effort when you know how to use AI Expertise has never been this valuable!!
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Jan Ole Suhr retweeted
Introducing Claude Fable 5.2 and Claude Mythos 5.2, designed to tackle the most daunting technical challenges. They’re capable collaborators on ambitious projects in many fields, and show improvements in areas like coding, reasoning, and vision.
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Always good to analyze all your sessions. Apparently, Opus 5.5 was switching away from using Bash for reads/writes/edits from 11-05 to 11-07. Back to normal now. I didn't notice any difference in quality, and usage was feeling normal, too ... 🤷
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Argh! I seem to have been targeted by another Anthropic A/B test. Probably worth monitoring regularly. It's when you see lots of Bash usage ("sed ...", "cat ...", ...) instead of Read/Edit/Write. For me, "bashFirst" works better.
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It's nice that you can just use Claude to analyze itself: "Since about 09:13 UTC today the server has Bash-first switched on for us anyway, so nothing urgent is wrong right now. ..."
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Jan Ole Suhr retweeted
Cybersecurity expert #1: AI is becoming superhuman at finding vulnerabilities and soon no computer will be safe Cybersecurity expert #2: also our private key is '4' and if you mash the keyboard long enough it logs you in as root
*sshole is out if you run sshd on alpine, openwrt or any musl box with password auth on: update now official writeup: sshhole.com
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Wild bug …
Background subagents in Claude Code now use less of your usage limit. A running subagent updates its status line every 30 seconds, and each update used to re-read its whole conversation. Now Haiku 5.5 writes it from short notes instead, so each update costs about 99% less.
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When the agent starts to talk to sub-agents although it shouldn't and I'm reading ... "Great work — the operator loves the Plan tab." ... I'm thinking to myself: are they alive!? 🥰
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Jan Ole Suhr retweeted
Sorry bro, weekend is for the lazy, I let my robo clean up my desktop (sound on)
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Jan Ole Suhr retweeted
the moat is to be a solo founder
there is no moat
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🧐 „Claude Code burns ~15–20% of your tokens on a 3-word status line. Here's how to turn it off“ gist.github.com/flamerix-ai/… Not sure if that’s really true. Can’t reproduce it (I am using Claude in my own harness with my own remote-/sub-agents only.)
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Testing the harness ... Opus 5.5 driving 40 sub-agents of deepseek-v4.1-flash-1017. Cache hit rate looks healthy, I'd say 🥰
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Jan Ole Suhr retweeted
feels like there needs to be a new way to distribute opensource software such that people can modify via agents but also get upstream automatically merged in coding agents can do this but they won’t do it automatically
experimenting with a lil personal project: an AI-native macOS dock with custom modes (writing, building, etc.) to help me stay focused my agent is able to customize mode behavior and add new modes, it uses jev to classify my activity + notifications in real time & act on them
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I think I must be in some test group with my Claude subscription ... Third day into the "Claude week" and I have a full day of usage (~14% points) leeway ... 😍🥳🎉
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Finally started to use Tailscale back in August before going on vacation. I can only suggest to try it out, and add some instructions / scripts to your AGENTS.md to automatically show the corresponding Tailscale URL alongside every local URL.
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Jan Ole Suhr retweeted
I tried to use and like Mastodon but didn’t last (too many unwritten social expectations on what I acceptable to post & how) and I self-censor posting about AI on Bluesky because I’m tired of the anti-AI responses there from devs. Today, X is the most positive forum on tech
The poll so far between Twitter, Bluesky and Mastodon. I think it looks less absurd than last time, but still pretty clear that the base is divided. teapaw.org/mitsuhiko/status/21143…
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The feeling when "you" have just implemented "your" own React DataTable component with virtualization ... and the weekly usage of your Claude subscription is still at 7% on the second day of the "Claude week" ... 😍🥰💪
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Who's running their software factory from the wrist? (I am ... 💪 ... it's not my arm, though, I wear my Apple Watch on the right hand 😅)
🤖 Made with AI
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... and usually, I don't approve "bash" right away but click on the next button that's barely visible: "Hand over to agent" 🤠
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Jan Ole Suhr retweeted
DeepSeek Status 1.4 released. New display support for LithosAI balance. GitHub: github.com/owenzhao/DeepSeek…
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