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chw9e

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Submissions

Background Coding Agents: Predictable Results Through Strong Feedback Loops

engineering.atspotify.com
2 points·by chw9e·il y a 4 mois·0 comments

Agent-written tests can't verify agent-written code

qckfx.com
3 points·by chw9e·il y a 4 mois·0 comments

Diffusion Models for ARC-AGI: A Retrospective

christopherhwood.com
1 points·by chw9e·il y a 5 mois·0 comments

AI Agents are shipping code faster than we can test

christopherhwood.com
4 points·by chw9e·il y a 5 mois·0 comments

Building iOS UI with Coding Agents Is Slow

qckfx.com
1 points·by chw9e·il y a 6 mois·0 comments

Show HN: qckfx – Stop manually checking if your AI agent broke your iOS app

2 points·by chw9e·il y a 6 mois·0 comments

A Guide to Hiring the Illegible

optimaloutliers.com
2 points·by chw9e·il y a 6 mois·0 comments

Giving Your Agent Eyes Is Not Enough

qckfx.com
1 points·by chw9e·il y a 6 mois·0 comments

Show HN: qckfx – Record your iOS simulator sessions, replay them as tests

2 points·by chw9e·il y a 7 mois·0 comments

We Use API Agents to Build Integrations Fast

qckfx.com
1 points·by chw9e·il y a 7 mois·0 comments

What I Wish I Could Tell Every Engineer Joining a New Team

qckfx.com
1 points·by chw9e·il y a 7 mois·0 comments

Dropbox: Knowledge Graphs, Prompt Optimizers, and MCPs

maven.com
2 points·by chw9e·il y a 7 mois·0 comments

Bug Fixing Is an ETL Problem

qckfx.com
1 points·by chw9e·il y a 8 mois·0 comments

Ask HN: How do you handle oncall at 15-30 engineers?

2 points·by chw9e·il y a 9 mois·0 comments

Finding and fixing software bugs automatically with SapFix and Sapienz

engineering.fb.com
2 points·by chw9e·il y a 9 mois·0 comments

AI-Powered Stagehand + bisect:Finding and Fixing the Commit That Broke Your Code

qckfx.com
2 points·by chw9e·il y a 9 mois·0 comments

Agentic Bug Reproduction for Effective Automated Program Repair at Google

arxiv.org
1 points·by chw9e·il y a 9 mois·0 comments

A Guide to Clustering LLM Chat Transcripts with Hdbscan

qckfx.com
1 points·by chw9e·il y a 9 mois·0 comments

Thoughts on Evals

raindrop.ai
2 points·by chw9e·il y a 9 mois·1 comments

What Real LLM Monitoring Looks Like (and Why It's Hard)

qckfx.com
3 points·by chw9e·il y a 9 mois·0 comments

comments

chw9e
·il y a 3 mois·discuss
This happened to me several years ago. I got signed up to probably 700 newsletters overnight. In the middle of all of the sign ups there was activity on my airbnb account where my notification settings were changed. when i checked my airbnb i noticed that someone had created a fake listing under my account and disabled booking notifications for it. a real multi-layer scam where the hacker would be making money off a fake listing on someone else's account who would probably never even realize it.
chw9e
·il y a 7 mois·discuss
As someone who never used Phind, how was it better than copilot? Did it integrate data from broader sources or just do a better job of presenting it? Was it faster?
chw9e
·il y a 12 mois·discuss
Oh, I just picked Anthropic’s Sonnet4 to start because it’s really good at agentic stuff and because of the subscription benefits.

I will add more model support soon - any models you particularly want to see?

I’m also hoping to test out RL on the tools to get a fine-tuned model specifically for browser automation eventually.
chw9e
·il y a 12 mois·discuss
It also has its own cli if you just want to run it alone too
chw9e
·il y a 12 mois·discuss
Yea it can be, but you will pay Anthropic API price. If you already use Claude code on a subscription then you can reuse your subscription for this MCP, making it effectively free
chw9e
·l’année dernière·discuss
this is t3 chat from what i understand, but probably many people already doing this. this is a good approach for wrappers.
chw9e
·l’année dernière·discuss
probably the idea behind the coding tools eventually. cursor charges a 20% margin on every token for their max models but people still use them
chw9e
·l’année dernière·discuss
Think we've got a long time yet for that. We're going to be writing code a lot faster but getting these things to 90-95% on such a wide variety of tasks is going to be a monumental effort, the first 60-70% on anything is always much easier than the last 5-10%.

Also there's a matter of taste, as commented above, the best way to use these is going to be running multiple runs at once (that's going to be super expensive right now so we'll need inference improvements on today's SOTA models to make this something we can reasonably do on every task). Then somebody needs to pick which run made the best code, and even then you're going to want code review probably from a human if it's written by machine.

Trusting the machine and just vibe coding stuff is fine for small projects or maybe even smaller features, but for a codebase that's going to be around for a while I expect we're going to want a lot of human involvement in the architecture. AI can help us explore different paths faster, but humans need to be driving it still for quite some time - whether that's by encoding their taste into other models or by manually reviewing stuff, either way it's going to take maintenance work.

In the near-term, I expect engineering teams to start looking for how to leverage background agents more. New engineering flows need to be built around these and I am bearish on the current status quo of just outsource everything to the beefiest models and hope they can one-shot it. Reviewing a bunch of AI code is also terrible and we have to find a better way of doing that.

I expect since we're going to be stuck on figuring out background agents for a while that teams will start to get in the weeds and view these agents as critical infra that needs to be designed and maintained in-house. For most companies, foundation labs will just be an API call, not hosting the agents themselves. There's a lot that can be done with agents that hasn't been explored much at all yet, we're still super early here and that's going to be where a lot of new engineering infra work comes from in the next 3-5 years.
chw9e
·l’année dernière·discuss
Yea, Airbnb keeps trying this services idea but not sure it's the right fit.
chw9e
·l’année dernière·discuss
> I haven’t yet come across an agent that can write beautiful code.

o3 in codex is pretty close sometimes. I prefer to use it for planning/review but it far exceeds my expectations (and sometimes my own abilities) quite regularly.
chw9e
·l’année dernière·discuss
The things I'm usually tabbing through in cursor are not the things that make me feel a lot of enjoyment in your work. The things that are most enjoyable are usually the system level design aspects, the refactorings to make things work better. These you can brainstorm with AI, but cannot delegate to AI today.

The rest is glorified boilerplate that I find usually saps me of my energy, not gives me energy. I'm a fan of anything that can help me skip over that and get to the more enjoyable work.
chw9e
·l’année dernière·discuss
How good were LLMs at building code that uses LLMs? This used to be a pain in previous versions because the LLM didn't have any LLM-using code in its training data. And what was the rough breakdown of LLM usage in coding? (looking for something like 20% claude code, 30% gemini 2.5, the rest manual)
chw9e
·l’année dernière·discuss
This was a very cool paper about using diffusion language models and beam search: https://arxiv.org/html/2405.20519v1

Just looking at all of the amazing tools and workflows that people have made with ComfyUI and stuff makes me wonder what we could do with diffusion LMs. It seems diffusion models are much more easily hackable than LLMs.
chw9e
·l’année dernière·discuss
Hey HN - I made a bunch of GenAI projects in 2024:

- 2 frontend React/Tailwind codegen projects (1 an agent, and 1 a really cool website builder)

- 1 Node.js codegen AI agent

- 1 ecommerce product placement image generator

I'm not working on these anymore (and the code and dependencies are probably far out of date now unfortunately - haven't looked at some of these for a year at this point).

But I thought I would just go ahead and make the code public and share it out there in case it can help anyone or inspire some new ideas.

Besides just sharing the code, if you click through to the detailed pages for each project you can see a demo video of each one showing how it works and read some of my notes about each one.

About the projects:

I really love the website builder, it's probably my favorite project I've done - so many cool details.

Other projects have some cool agent things going on, maybe some novel approaches to codegen in there - not sure.

The image generation one has a bunch of ComfyUI workflows that I spent a bunch of time on.

Happy to answer any questions here - although I'll probably have to review the code if anything is too in the weeds as I've forgotten a lot already.

Also the code is not very well-organized and there's some dead code and stuff floating around and things commented out or half-implemented at places. I didn't bother to clean it up too much besides making sure I'm not leaking any env secrets or API keys (if you spot one, let me know please!)

And last - these are mostly written in Node.js, React, and a bit of Python. I don't claim to be an expert in these languages and was pretty unfamiliar with using them before I built these - so don't use this as a reference on how to write great code, rather I hope you enjoy the concepts behind the features.

Hope it can be of interest and potentially of help to someone out there!
chw9e
·l’année dernière·discuss
Hey HN - I made a bunch of GenAI projects in 2024: - 2 frontend React/Tailwind codegen projects (1 an agent, and 1 a really cool website builder) - 1 Node.js codegen AI agent - 1 ecommerce product placement image generator

I'm not working on these anymore (and the code and dependencies are probably far out of date now unfortunately - haven't looked at some of these for a year at this point).

But I thought I would just go ahead and make the code public and share it out there in case it can help anyone or inspire some new ideas.

Besides just sharing the code, if you click through to the detailed pages for each project you can see a demo video of each one showing how it works and read some of my notes about each one.

About the projects:

I really love the website builder, it's probably my favorite project I've done - so many cool details.

Other projects have some cool agent things going on, maybe some novel approaches to codegen in there - not sure.

The image generation one has a bunch of ComfyUI workflows that I spent a bunch of time on.

Happy to answer any questions here - although I'll probably have to review the code if anything is too in the weeds as I've forgotten a lot already.

Also the code is not very well-organized and there's some dead code and stuff floating around and things commented out or half-implemented at places. I didn't bother to clean it up too much besides making sure I'm not leaking any env secrets or API keys (if you spot one, let me know please!)

And last - these are mostly written in Node.js, React, and a bit of Python. I don't claim to be an expert in these languages and was pretty unfamiliar with using them before I built these - so don't use this as a reference on how to write great code, rather I hope you enjoy the concepts behind the features.

Hope it can be of interest and potentially of help to someone out there!
chw9e
·l’année dernière·discuss
Hey HN -

I made a bunch of GenAI projects in 2024: - 2 frontend React/Tailwind codegen projects (1 an agent, and 1 a really cool website builder) - 1 Node.js codegen AI agent - 1 ecommerce product placement image generator

I'm not working on these anymore (and the code and dependencies are probably far out of date now unfortunately - haven't looked at some of these for a year at this point).

But I thought I would just go ahead and make the code public and share it out there in case it can help anyone or inspire some new ideas.

Besides just sharing the code, if you click through to the detailed pages for each project you can see a demo video of each one showing how it works and read some of my notes about each one.

About the projects:

I really love the website builder, it's probably my favorite project I've done - so many cool details.

Other projects have some cool agent things going on, maybe some novel approaches to codegen in there - not sure.

The image generation one has a bunch of ComfyUI workflows that I spent a bunch of time on.

Happy to answer any questions here - although I'll probably have to review the code if anything is too in the weeds as I've forgotten a lot already.

Also the code is not very well-organized and there's some dead code and stuff floating around and things commented out or half-implemented at places. I didn't bother to clean it up too much besides making sure I'm not leaking any env secrets or API keys (if you spot one, let me know please!)

And last - these are mostly written in Node.js, React, and a bit of Python. I don't claim to be an expert in these languages and was pretty unfamiliar with using them before I built these - so don't use this as a reference on how to write great code, rather I hope you enjoy the concepts behind the features.

Hope it can be of interest and potentially of help to someone out there!
chw9e
·l’année dernière·discuss
Yes, it is very good. I have built full websites complete with database storage and automated email sending all without having to touch the code at all.
chw9e
·l’année dernière·discuss
I would say Lovable is the best performing that I've seen. I can build complete non-trivial sites without doing any coding at all.

Deep Research works reliably but I wish the agent would do some due diligence on its link selection and also today I uncovered where it misquoted a website which was very misleading.
chw9e
·l’année dernière·discuss
Another good case is for rolling back a single bad commit from a batch that got merged into main at the same time.

Doing batch merges with a merge queue can speed up things if you have a ton of longer running end to end and integration tests. But then if a test fails you need to identify which commit out of the batch is causing it so you don’t reject the entire batch.
chw9e
·l’année dernière·discuss
Now with AI test frameworks like stagehand it’s actually possible to write end to end tests after a bug appears that can be backwards compatible as long as changes to the dom are not too extreme. But things like broken selectors won’t be an issue.

I wrote about that here: https://qckfx.com/blog/ai-powered-stagehand-git-bisect-findi...