I'd love to know why it's defined like that, as opposed to including all of the instructions directly in the skill Markdown file.
jw1224 12 hours ago [-]
I've used a similar technique with my own tools. It helps to save context overall, by deferring the detailed instructions not only to when they're needed, but also to where they're needed.
Simply loading the browser Skill alone, doesn't always mean a browser is actually necessary (or supported). The user might've want them to control their main desktop browser; or the user might be pointing them toward a read-only HTML file that doesn't need rendering; or the sandbox might prevent network access; etc...
Codex is especially 'keen' to use Skills (especially by comparison to Claude), I often see it load Skills which it doesn't go on to use, because the main Skill content says "when not to use this". So I'm sure this is a product design decision to help with those kinds of circumstances.
lanyard-textile 13 hours ago [-]
It's runtime dependent on the browser being used! A skill file wouldn't be able to have this dynamically injected for the browser that's about to be used.
Skill file could indicate general instructions for all browsers. This provides guidance for the browser that's about to actually be used.
tomrod 11 hours ago [-]
Two sources of truth, if playwright updates?
Honestly, this is one of the things OpenAI does pretty well, I think, these tiny design decisions that you wouldn't notice until it becomes super annoying.
GrinningFool 8 hours ago [-]
That's a pattern I often follow - refer it to the docs, don't include them. Usually it's another markdown, but sometimes it can be the output of something else. This avoids including any of that in context before it's actually needed.
newswasboring 13 hours ago [-]
I'm guessing, but can be because then the skill will always fetch the latest docs.
Simon, thanks for all the great work you do. I definitely appreciate your contributions to discussion threads here as well as your blog. I learned so much from you.
enos_feedler 8 hours ago [-]
For ultimate show of appreciation, there is a way to subscribe to his work on github :)
owebmaster 14 hours ago [-]
[flagged]
dang 11 hours ago [-]
simonw is a fine contributor to HN and we're lucky to have him.
I realize that for some people there is too much LLM-related content and (therefore?) too much by certain authors, but that has always been the case for certain topics and certain authors in HN's history. This is a side effect of the frontpage being the same for everyone, and therefore the scarcest resource.
Simon is not the OP. He’s just commenting on his own work. How is that spam?
simonw 14 hours ago [-]
My comment here is entirely justified in this case.
Someone else submitted my vibe-coded slop site to the front page without any context, and it accumulated enough votes to show up at the top.
I could have linked to my blog post about it, but instead I linked to a Hacker News comment precisely because I anticipated complaints about "spamming" if I linked to my blog.
yoavm 14 hours ago [-]
Simon, thank you for your comments and the great content you create. I've learned a lot from your blogposts and your experiments.
NoDodgeQuestion 13 hours ago [-]
You don't know, SimonW made Django Python framework?
Cheyana 13 hours ago [-]
Chuckling at a Python reference in a comment thread arguing about spam.
rob 13 hours ago [-]
Didn't he leave the project before it even had an official release?
> I haven’t been involved with Django since leaving the Journal-World back in September, but now that the framework is open-sourced I look forward to contributing to its further development—both in terms of documentation and actual code.
bewareofscams 13 hours ago [-]
Having done a thing does not make a person into a demigod embodiment for life, please remember that guys.
12 hours ago [-]
rvz 14 hours ago [-]
[flagged]
simonw 14 hours ago [-]
What am I "doing" here?
rvz 14 hours ago [-]
[flagged]
simonw 14 hours ago [-]
How is this comment "spam"? Spell it out for me.
(I think you may be confusing "spam" with "prolific". I write a lot.)
infecto 13 hours ago [-]
I think folks are a little too aggressive here but I know I typically have your posts muted by default for me simply because too often it was just blog spam about something you wrote before. I suspect the greater HN in net likes your work but there is a pretty wide spectrum and I would say you definitely blur the limits between spam and “prolific”.
rob 13 hours ago [-]
You don't like seeing the top post of every model thread being a link to some SVG pelican that he generated?
rvz 13 hours ago [-]
Once again, continues to gaslight after spamming a post with another top-posted comment after having to “justify” it. In this case, You already admitted to it.
There is just no end or need to rapidly post on every opportunity that involves “AI” or whatever that is related to it.
simonw 13 hours ago [-]
Seriously, what's your definition of spam?
Or an easier question: how am I gaslighting here? You should be able to spell that out.
(You do understand that the top linked site here was built by me, but has no authorship information on it at all, right? That's why I posted a comment explaining what it is.)
simianwords 13 hours ago [-]
.. I know its tempting to try to reply to all these people but I'd just ignore them. A lot of them feel stressed by AI and it has nothing to do with you personally.
owebmaster 13 hours ago [-]
"Am I so out of touch?"
"No, it's the children who are wrong".
nswizzle31 13 hours ago [-]
Spam = excessive promotion of your work. It’s not one comment, but the entire context of all your comments.
Gaslighting because it’s so OBVIOUS that this is what people are referring to by “spam” that you almost have to be purposely pretending to not understand. Such a prolific writer simply has to be aware of the fine line where promoting your work becomes excessive.
Not taking sides here.
filmgirlcw 13 hours ago [-]
Someone else posted his site to HN, not Simon. He responds with additional context and also responds to links to other HN comments he’s made rather than just linking back to his own site. The only person gaslighting here is you.
monster_truck 13 hours ago [-]
maybe chill out dog
bingemaker 14 hours ago [-]
[flagged]
bewareofscams 13 hours ago [-]
I share the sentiment of the parent (downvoted) commenter.
infecto 14 hours ago [-]
I just tune out every post that says “I wrote about this already” and then links to it. Simon is great and kudos for his self promotion but it’s interesting to see as it’s often called out for anyone else.
The guy is good but he certainly stretches the limit. I just auto ignore his stuff but I know others enjoy!
satvikpendem 13 hours ago [-]
I don't get how this is different from Codex if Codex can do all the same things.
simonw 12 hours ago [-]
ChatGPT Work in the ChatGPT desktop app is effectively Codex with a different skin. It can operate on your local files in the same way.
ChatGPT Work in the ChatGPT web and mobile app experience is very different.
If you like, you can think of it as a cloud-hosted version of Codex that's skinned to look more like consumer ChatGPT.
shostack 54 minutes ago [-]
As someone who uses ChatGPT and Codex across desktop and phone and VPS, the current topology they have for their different "apps" is very confusing and disjointed. I would really like to see improvements in unifying this and reducing the confusion between what works in which part on which device and enabling seamless context and memory sharing across them.
lxgr 7 hours ago [-]
> ChatGPT Work in the ChatGPT desktop app is effectively Codex with a different skin. It can operate on your local files in the same way.
It even shares the same login state and conversation history with /resume, at least when running it in a "project" (which seems to largely map to a directory/repo, at least the one selected as "primary"?)
satvikpendem 12 hours ago [-]
If I use Codex in one session on desktop can I then resume it for cloud and mobile sessions as Work? Or do I have to make separate sessions each time? Or rather, can Codex in the cloud do the same things, if such a thing exists?
darepublic 3 hours ago [-]
Some of these work tools can slow things down and waste plentiful tokens
enraged_camel 14 hours ago [-]
Meta comment: I've been wondering why AI-generated websites/artifacts/reports always have the same "look". It reminds me of Bootstrap (CSS Framework) days when every startup website looked the same.
Scroll down to the "Establish the visual direction" section.
tsunamifury 13 hours ago [-]
This can be replaced, you just have to do the work of building a design library yourself and the guidance components. Then building skills around their use.
Almondsetat 12 hours ago [-]
Because most AI generated websites are from people who don't know much and as such cannot even articulate the look they want
I keep seeing comments like this, and having messed around and generated a few (non-public) websites myself they all looked completely different?
Mind you I don’t spend a lot of time on ai generated websites or the kinds of places you might find those. Well except for HN but you get my point.
newswasboring 13 hours ago [-]
I think these guideline are built into the llms. After all with llms, any decision you don't take will be taken for you. For a so called slop site (Simon's words, not mine :P) I don't think they specified a style so the llm just decided the default it knows. One day I will run experiments (when I can afford it) trying to identify the "taste" of different llms.
nit, the LHS menu does not scroll until I get the the very bottom of the main content, it should scroll independently so I can see the "ToC" in full without having to view the page in full
simonw 7 hours ago [-]
Thanks, I passed that on to ChatGPT Work, should be fixed now (I'm on mobile so haven't tried it on desktop yet.)
montroser 7 hours ago [-]
Can we get one for how to test websites on a regular sized screen?
That left-hand sidebar needs to be able to scroll on its own, unless you're on a 4k monitor. Otherwise, there's no way to view the bottom half of the list.
Anyone using ChatGPT Work given Sam Altman's richly documented history(1), the essential elimination and/or public exit of the safety function at OpenAI(2), and the huggingface debacle's exposure of the abject operational, cultural and technical failures at OpenAI(3), is making a serious mistake.
It tells ChatGPT Work how to launch a Playwright instance via its Node.js REPL, and tells it to run:
To get further instructions.That method returns this text with full details about how to use the browser: https://codex-tool-reference.simonw.chatgpt.site/skills/cont...
I'd love to know why it's defined like that, as opposed to including all of the instructions directly in the skill Markdown file.
Simply loading the browser Skill alone, doesn't always mean a browser is actually necessary (or supported). The user might've want them to control their main desktop browser; or the user might be pointing them toward a read-only HTML file that doesn't need rendering; or the sandbox might prevent network access; etc...
Codex is especially 'keen' to use Skills (especially by comparison to Claude), I often see it load Skills which it doesn't go on to use, because the main Skill content says "when not to use this". So I'm sure this is a product design decision to help with those kinds of circumstances.
Skill file could indicate general instructions for all browsers. This provides guidance for the browser that's about to actually be used.
Honestly, this is one of the things OpenAI does pretty well, I think, these tiny design decisions that you wouldn't notice until it becomes super annoying.
I realize that for some people there is too much LLM-related content and (therefore?) too much by certain authors, but that has always been the case for certain topics and certain authors in HN's history. This is a side effect of the frontpage being the same for everyone, and therefore the scarcest resource.
https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
Someone else submitted my vibe-coded slop site to the front page without any context, and it accumulated enough votes to show up at the top.
I could have linked to my blog post about it, but instead I linked to a Hacker News comment precisely because I anticipated complaints about "spamming" if I linked to my blog.
> I haven’t been involved with Django since leaving the Journal-World back in September, but now that the framework is open-sourced I look forward to contributing to its further development—both in terms of documentation and actual code.
(I think you may be confusing "spam" with "prolific". I write a lot.)
There is just no end or need to rapidly post on every opportunity that involves “AI” or whatever that is related to it.
Or an easier question: how am I gaslighting here? You should be able to spell that out.
(You do understand that the top linked site here was built by me, but has no authorship information on it at all, right? That's why I posted a comment explaining what it is.)
"No, it's the children who are wrong".
Gaslighting because it’s so OBVIOUS that this is what people are referring to by “spam” that you almost have to be purposely pretending to not understand. Such a prolific writer simply has to be aware of the fine line where promoting your work becomes excessive.
Not taking sides here.
The guy is good but he certainly stretches the limit. I just auto ignore his stuff but I know others enjoy!
ChatGPT Work in the ChatGPT web and mobile app experience is very different.
If you like, you can think of it as a cloud-hosted version of Codex that's skinned to look more like consumer ChatGPT.
It even shares the same login state and conversation history with /resume, at least when running it in a "project" (which seems to largely map to a directory/repo, at least the one selected as "primary"?)
Are they following some sort of common guideline?
Scroll down to the "Establish the visual direction" section.
https://blog.kinglycrow.com/no-skill-no-taste/
Mind you I don’t spend a lot of time on ai generated websites or the kinds of places you might find those. Well except for HN but you get my point.
That left-hand sidebar needs to be able to scroll on its own, unless you're on a 4k monitor. Otherwise, there's no way to view the bottom half of the list.
(1) https://www.newyorker.com/magazine/2026/04/13/sam-altman-may... (2) https://thenextweb.com/news/openai-preparedness-team-disband... (3) https://thezvi.wordpress.com/2026/08/29/metr-and-redwood-off...