Danny Cosson

262 posts

Danny Cosson

Danny Cosson

@dannycosson

CTO at @zocomputer, previously @uber, @triple_byte, @venmo

San Francisco, CA Katılım Mayıs 2009
283 Takip Edilen379 Takipçiler
Danny Cosson
Danny Cosson@dannycosson·
This is just a limitation of harnesses for long-running tasks. If you babysit the runtime (without providing any useful technical oversight) and give them the right feedback loop, these models can absolutely solve most of these. As an example here's a clone of treesitter I made a few months back github.com/dcosson/treesi…
Deedy@deedydas

The creators of SWE-Bench just dropped a really simple new benchmark every LLM gets 0% on. ProgramBench asks: can models recreate real executable programs (ffmpeg, SQLite, ripgrep) from scratch with no internet? We are far from saturated on model quality.

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Danny Cosson
Danny Cosson@dannycosson·
Getting into that agentic engineering flow state
Danny Cosson tweet media
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Danny Cosson
Danny Cosson@dannycosson·
Or how about making it possible to create a token scope for agents that can read/write feature branches and PRs but not push to main to merge PRs? This is literally not possible to do right now even when combining the token scopes with branch protection rules.
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Danny Cosson
Danny Cosson@dannycosson·
Even like very small additions, I'm not talking about designing some brand new agent-first system. But how about recognizing markdown plan docs in PRs and highlighting those & making them easier to read in rendered format instead of only as a diff?
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Danny Cosson
Danny Cosson@dannycosson·
It's wild how much Github refuses to adapt to emerging agentic coding patterns. They just decided the product was perfectly complete like 10 years ago and they're never gonna add another feature.
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ben guo 🏇
ben guo 🏇@0thernet·
i am incredibly stoked to have hired these absolute goats at @zocomputer @dannycosson is the one of the most cracked engineers i've met in my entire career @shreyans___ is one of the most brilliant product minds i know, founded 2 successful consumer startups venmo mafia ftw
Zo Computer@zocomputer

New hires: @dannycosson and @shreyans___ have joined Zo as CTO and engineer Maybe you've heard of the PayPal mafia but have you heard of the Venmo mafia? Our founders @0thernet and @perceptnet met Danny and Shreyans on the early Venmo team 13 years ago "A glitch in the matrix" is how they describe those days. New hires were made at banyas. Danny was an early engineer. Shreyans was the first hire after getting a getting a text from an unknown number that said, “Iqram paid you $1.00 for being a super sexy dude” (@iqramband and @kortina founded Venmo). After Venmo, everyone went their separate ways. Shreyans was most recently cofounder and CTO of @MavenHQ. Danny was an engineering manager at @Uber. Venmo was a product way before its time. It hasn't changed much in the last few years but remains ubiquitous. We hope a few years from now, you'll think the same about Zo. THE GANG'S BACK LFG

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Danny Cosson
Danny Cosson@dannycosson·
Super excited about joining Zo! We're building a great cloud computer home on the internet for you and your agents to get things done and share them with the world. We're also growing the team so let me know if you're interested or you have any referrals!
Zo Computer@zocomputer

New hires: @dannycosson and @shreyans___ have joined Zo as CTO and engineer Maybe you've heard of the PayPal mafia but have you heard of the Venmo mafia? Our founders @0thernet and @perceptnet met Danny and Shreyans on the early Venmo team 13 years ago "A glitch in the matrix" is how they describe those days. New hires were made at banyas. Danny was an early engineer. Shreyans was the first hire after getting a getting a text from an unknown number that said, “Iqram paid you $1.00 for being a super sexy dude” (@iqramband and @kortina founded Venmo). After Venmo, everyone went their separate ways. Shreyans was most recently cofounder and CTO of @MavenHQ. Danny was an engineering manager at @Uber. Venmo was a product way before its time. It hasn't changed much in the last few years but remains ubiquitous. We hope a few years from now, you'll think the same about Zo. THE GANG'S BACK LFG

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Danny Cosson
Danny Cosson@dannycosson·
@dbmikus @0thernet Nice! Here's the library github.com/dcosson/h2. It runs the stock coding agents so you can use subs, lets you launch pods that can talk to each other, and it has skills to get them to work more autonomously and do more review & testing on their own.
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Dylan Mikus
Dylan Mikus@dbmikus·
@0thernet @dannycosson How's it work? We're building infra to help teams more or less design and run their own Gastowns (aka software factories) so I always like to learn what people have cooked up
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ben guo 🏇
ben guo 🏇@0thernet·
today i saw our new CTO @dannycosson's agentic engineering setup in action (it's like gastown but better) and i feel like a caveman
ben guo 🏇 tweet media
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Danny Cosson
Danny Cosson@dannycosson·
@RhysSullivan I don't use stacked diffs but I do the rest of the workflow frequently using github.com/dcosson/h2 Aiming to bring Coding Factories for Everyone to Zo soon but obviously can't use subs out of the box in the hosted product. Want to support delegating to them though.
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Rhys
Rhys@RhysSullivan·
has anyone built "the software factory" thing, misc requirements: - able to use my subscriptions (codex / claude) - stacked diffs w/ graphite - able to go from planning -> lots of small tasks - closing the review loop don't love current agent interfaces, want something new
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Danny Cosson
Danny Cosson@dannycosson·
Going in to make the smallest edit runs the risk of breaking related pieces. It often has limitations in exactly how you can test given the existing design. That handcuffs the agents and leads to more slop vs giving a clean slate where they can iteratively improve their work.
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Danny Cosson
Danny Cosson@dannycosson·
As an example you can consider building entire big, complete, parallel modules and routing between the old and new one at a higher layer, vs going in with a scalpel to get the existing module to support new capabilities.
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Danny Cosson
Danny Cosson@dannycosson·
When building software the goal is normally to ship ASAP. Pre-AI this meant making the changes as small as possible bc writing more code = takes more time. It's still under-explored what software engineering can look like when you relax this constraint.
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Danny Cosson
Danny Cosson@dannycosson·
@ossaijaD Yeah, that's definitely true sometimes. But other times smaller is more convoluted rather than simpler. I.e. hacking something on that doesn't really fit because refactoring the existing thing would be too slow.
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TG
TG@ossaijaD·
@dannycosson What is making the changes small was also a way for you to reason currently about the solution the code implements?
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Danny Cosson
Danny Cosson@dannycosson·
@0xblacklight @badlogicgames Was anyone recommending unstructured swarms as a good model? Even Gastown which is borderline unusably chaotic still has defined planner/orchestrator, worker, and merger roles
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Danny Cosson
Danny Cosson@dannycosson·
Love to see it, I've also found agents are very productive in go. They can also drop down to simd-optimized assembly instead of zig for simple hot paths to avoid the cgo overhead. One major thing I feel like is missing in go though is support for tokio-rs/loom style permutation testing for the native concurrency primitives. It's hard to deterministically test concurrent go code, you either don't do it and just rely on fuzzing or you have to wrap all the built-ins in helper methods leading to pretty non-idiomatic code.
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Mitchell Hashimoto
Mitchell Hashimoto@mitchellh·
I'm writing Go again (for what, you'll see later...). `go doc` and `gopls` are like agent superpowers and its shocking how productive agents are out of the box at writing [good] Go code versus other languages I've used (including the JS ecosystem). Also, Go + Zig is a good mix. Go for the higher level and concurrent stuff and then no-libc Zig code plus the Zig compiler for zero dependency cross-compiled cgo with high-performance characteristics (minimize cgo boundary crosses). Chefs kiss. Its funny because a lot of the shitty ergonomics of Go CLIs like `go doc` and `gopls` (prev. stuff like `go oracle` or `guru`) are totally obviated by agents and not just that but in a twist of irony they're excellent for agents. Don't worry, its not Ghostty. Ghostty and libghostty will remain pure Zig; it's a fantastic fit and a perfect pairing. This is for something else. "Wait, I thought you said Go has no place anymore?" I was wrong, mostly because agents are so productive at Go. I won't bring in other languages in this discussion because I don't want to feed the crabs, so to speak. lol.
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Danny Cosson
Danny Cosson@dannycosson·
All the responses here are either "just bring your kids along" or "trade off with the other parent to get some me time". I'm sure that every parent feeling burnt out has tried these things. Why is this apparently so simple and a non-issue for some but doesn't work for everyone?
PPE@planert41

Dads with young kids Is it normal to just feel tired and burnt out all the time? It’s like you don’t even really get the weekend to recover because it’s all just kid stuff the moment you wake up Arguably the only personal time you have is when they nap (and you’re already dead tired by that time) or the hour after they go to bed but before you pass out Just trying to figure out if I’m doing something wrong

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Danny Cosson
Danny Cosson@dannycosson·
@TommyTPaine @buccocapital I'm specifically talking about things where you're there to do it for fun. You can bring them but it ends up being more work than fun. For running errands, yeah you can drag the kids along and it makes it harder but it works fine.
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Danny Cosson
Danny Cosson@dannycosson·
@TommyTPaine @buccocapital Maybe so, but even at 2 years? My American mind can't even comprehend lol. Do you keep them strapped in somewhere the whole time? How are you not just running after them constantly?
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BuccoCapital Bloke
BuccoCapital Bloke@buccocapital·
4 simple to feel less burned out as a parent: 1. Do things *you* like to do. Kids just come along. Doesn't always have to be about them. 2. Switch off sleeping in 3. Switch off taking kids places to get time alone 4. Schedule a date night and stick to it
PPE@planert41

Dads with young kids Is it normal to just feel tired and burnt out all the time? It’s like you don’t even really get the weekend to recover because it’s all just kid stuff the moment you wake up Arguably the only personal time you have is when they nap (and you’re already dead tired by that time) or the hour after they go to bed but before you pass out Just trying to figure out if I’m doing something wrong

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Danny Cosson
Danny Cosson@dannycosson·
@buccocapital So for all the people saying "kids don't need to take up 100% of your time, you're just doing it wrong!" It's all just #3 in this list? Have someone else watch the kids while you go off and do stuff?
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Danny Cosson
Danny Cosson@dannycosson·
@buccocapital 2. Doesn't help because my internal clock just wakes me up by 6am now no matter what. 4. Is good for the relationship but that's a separate need than the need for me time and not feeling burnt.
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Keşfet

@AgrawalArian @0thernet @zocomputer @shreyans___ @dbmikus @RhysSullivan @ossaijaD @0xblacklight