Classically trained software engineer. Founder. Lawyer. Survived cancer and several startups. Building agentic systems (usually while listening to Tool).

Campbell, CA
Joined February 2007
Tim Marman retweeted
xitter.cf/thsottiaux/status/2104… Haha. I knew OpenAI would come out with their Jev competitor soon! (still impressively soon!)
Replying to @lawrencecoburn
👀 I mean, I'm as excited as anyone about Jev, I'm using it all over the place, but I also foresee OpenAI/Anthropic having their own solutions in ~6 weeks.
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I'm excited to see @bcherny's talk at @ComputerHistory tomorrow, but hope it's worth not picking up my M5 Ultra until Thursday. (It was supposed to arrive today).
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Tim Marman retweeted
Apple should take notes from Patek and force you to buy a few iPads before you can get a Mac Studio
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Tim Marman retweeted
hello
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Tim Marman retweeted
Sending lots of love to the Apple community on my last day as CEO. My title changes tomorrow, but the love I have for the Apple community never will. Thank you for being a constant source of inspiration. My gratitude is endless, and I’m excited for the next chapter!
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Tim Marman retweeted
This is going to come off as grumpy, but it needs to be said: Stop showing people your junk. Everyone can build junk with AI now. Nobody else wants to see your junk. We're not kindred spirits just because we both build junk. Play with your junk strictly in private. Thank you.
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Tim Marman retweeted
I’m actually pretty upset Apple allowed this. While the feature is cool, the technical functionality that enables it is not cool. If I was Tim Apple, OAI would be temporarily banned from the App Store until this is reversed, and here’s why: I use iMessage because it’s quantum encrypted, with server keys I can own. Local caches are on devices that are encrypted with my passwords, not apples keys. This makes it and computationally and legally impossible for anyone else to access chat history but the people I trust and directly communicated with. But *now* the copies of my messages from years ago on *anyones* laptop in what is *supposed* to be an encrypted-at-rest local cache only can now be fetched directly by chatgpt without my permission or even knowledge and stored and processed in plain text forever on openai / Microsoft servers unencrypted and requested by any government entity at a moments notice without my knowledge and openai/Microsoft legally have to provide that, in federally enforced total secrecy. And they’re never legally allowed to admit they do it. AND because of default chatgpt settings most people haven’t bothered to turn off, all those private texts can now be used for training and will end up in the weights of future models, so all future AI models will permanently know all of our private lives as a part of the weights, immortalized forever as training checkpoints. Total architecture abandonment and user trust betrayal on Apples part. This should be the most viral story of 2026 by 100x. The permanent end of private communication in the US.
Everyday conversations just got easier with the new Apple Messages plugin. Search messages, catch up on conversations, draft and send replies—all with ChatGPT on your Mac. Now available in ChatGPT Work and Codex on desktop.
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Tim Marman retweeted
Done ✅ @nachunja gloopie Will drop the agent file in the thread 🧵
IMMORTALISE 'CUTE BABY' AS A GLOOPIE!!!! $XYZ
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Tim Marman retweeted
We often build the tools we need ourselves. Berd is the desktop application our teams use to work with AI agents across projects, skills, tools, and models. Today, we’re making it open source and sharing what we’ve learned. Meet Berd, AI with character: block.xyz/inside/designing-a…
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Tim Marman retweeted
When you raise reasoning_effort, does the model solve more net new problems? Nope! It trades some previously solved tasks for other tasks. Every single effort step, in every family, loses tasks that the cheaper setting solved.
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Tim Marman retweeted
Buzz Desktop v0.5.10 Faster channel loading and smoother performance Sharper, better-scoped search A new glass appearance and cohesive settings “Send to channel” for thread messages More reliable link previews Fixes for timelines, themes, and attachments Enjoy! github.com/block/buzz/releas…
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I've always felt that channels and threads are the most natural way for people and agents to work together, especially in multiplayer. Buzz is built around that model, so I've spent the last week figuring out how to bring Voxelbox into it. Read more: tmarman.com/posts/voxelbox-i…
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Tim Marman retweeted
New 21 in 21 episode with @bradleyaxen! We talk about Buzz, an open-source collaboration workspace for humans and agents, @goose_oss, and AI efforts at @blocks.
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Tim Marman retweeted
For my first post, I’m sharing a letter @NVIDIA signed on why open models matter. AI will transform every industry, power every company, and be built by every country. Open models strengthen safety and cybersecurity, accelerate innovation and diffusion, and enable sovereignty. The world needs both frontier closed models and frontier open models. images.nvidia.com/pdf/Open-W…
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Tim Marman retweeted
goose development kit spiral.xyz/projects/
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Tim Marman retweeted
Goose is growing from an app into a platform. We're building GDK: the Goose Development Kit for building agentic apps with shared infra instead of reinventing the whole honking runtime. Let's see what's inside: orchestration, in-process local models, access to 50+ model providers, routing and dynamic model selection, context, tools, memory, remote execution ... (hold on, this goose needs a sip of water. whew!) ...automations and scheduling, skills, subagents, code mode, flexible agent loop, slash command infra, and more 🔥 Companies and individual builders will be able to mix and match these building blocks to create purpose-built agentic apps for their own use cases. I'll honk to that!
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Tim Marman retweeted
According to the email from @quixotic (Reid Hoffman), I was member 5,638 of @LinkedIn. Not too shabby. Who can beat it?
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I miss @boughnaut. RIP my friend.
"Ten years ago, we had Steve Jobs, Bob Hope and Johnny Cash. Today we have no Jobs, no Hope and no Cash." - @boughnaut
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