Show HN: WhatHappened – HN summaries, heatmaps, and contrarian picks

https://www.whathappened.tech/

66•marsw42•4d ago

Hi HN,

I built WhatHappened (whathappened.tech) because I have a love/hate relationship with this site. I love the content, but the "wall of text" UI gives me FOMO. I was spending too much time clicking into vague titles ("Project X") or wading through flame wars just to find technical insights.

I built this tool to act as a filter. It generates a card for the top daily posts with a few specific features to cut the noise:

1. AI Summaries: It generates a technical TL;DR (3 bullet points) and an ELI5 version for every post.

2. The Heat Meter: I analyze the comment section to visualize the distribution: Constructive vs. Technical vs. Flame War. If a thread is 90% Flame War, I know to skip it (or grab popcorn).

3. Contrarian Detection: To break the echo chamber, the AI specifically hunts for the most upvoted disagreement or critique in the comments and pins it to the card.

4. Mobile-First PWA: I mostly read HN on my phone, so I designed this as a PWA. It supports swipe gestures and installs to the home screen without an app store.

Stack: Next.js, Gemini, Supabase.

It currently supports English and Chinese. Any feedback will be appreciated! My original X post: https://x.com/marsw42/status/1997087957556318663, please share if you like it or find it helpful! :D

Thanks!

Comments

MrCoffee7•4d ago

It seems like each article takes a lot of vertical space. What if you changed the UI so you just displayed a title for each article with a little icon next to it like a downward arrow that you could click on if you wanted to see more of that article? That way, you could display more titles on one screen so that the user could more quickly scroll to the articles they actually wanted to see?

9vigugfgg•1d ago

The arrows in the circles floating fixed at the bottom expand and collapse as you want.

marsw42•14h ago

Yes there is a collapse all button on the bottom right. On desktop view you can also try the table/card view switch button next to the "sort by" button for denser information.

hyperjeff•3d ago

Nice. It’d be cool if you could tap on the subject tags to filter for the latest posts with that tag.

marsw42•14h ago

Just added the feature!

mvkel•1d ago

Really nice experience on mobile. I didn't think I'd like the "contrarian take" section, but it's actually useful to see what the main counterpoint is on a post, and how seriously others are taking it

fhutrr567•1d ago

You like it, because that's pretty much the only way to get the contrarian take.

As I said below, hn bans contrarians to curate consensus in the interest of harmony above reality, openness or the achievement of human potential.

nickthegreek•1d ago

What BS.The contrarian view listed on the site is based off of the comments from HN. Throughout this thread, your brand new account is posting nonsense.

jcoughenour•1d ago

The timestamp under each title seems to be the timestamp of when it was summarized and not when it was actually posted on HN. As a reader, I would prefer to see when it was posted. You already have a "updated x hours ago" at the top of the page so there is no reason to just repeat that updated timestamp on all the cards.

marsw42•14h ago

Oof that was a bug, just fixed! Clear your localstorage to refetch the data and the time shall be correct now.

prodigycorp•1d ago

The number of new (less than one hour old) accounts with garbled names in this thread is odd, to say the least.

tayo42•1d ago

At a glance though it's not obvious if theres something being sold. Its a hobby project? What is there to gain by gaming hn for this? Odd

FinnKuhn•1d ago

Twitter/X Followers and relevancy.

marsw42•14h ago

I've been a long time HN reader but never created account since I never posted. I built the site to solve my own problems and just thought it was cool to share it with the community that I enjoyed :D

kenreidwilson•1d ago

Any chance this can go open source? I'd love to contribute and self host.

rcarmo•1d ago

Ditto.

marsw42•14h ago

Working on it! Polishing the code and will fix some final bugs and I might make a different post to share the code so it's easier to host :D

winchester6788•1d ago

Ooh, love the UX, the heat meter and contrarian detection are very nice ideas.

I recently released https://trackernews.app/browse which surfaces out and groups content from hn, reddit .. for user defined topics and extracts user defined structured data along with summaries.

a tangential take on similar problem with focus on grouping posts by topics.

would love to get any feedback on the UX/ understandability of the interface

marsw42•14h ago

trackernews is awesome! To me the content of the tables are more or less confusing though. When I built my site I was just trying to focus on the mobile experience so it feels more like an app.

browningstreet•1d ago

I have a Gemini gem for HN where I share a thread and it pulls out insightful comments, interesting links, and avoids that flame war stuff entirely. It's less compact than this format but has more actionable takeaways for me. Tips, tricks, insights, and links is what I want from a lot of these conversations. And there are some specific HN-isms that I've coded into the gem to restrict from the report.

marsw42•14h ago

I agree! Gemini gem is great for deep dives. My site was just for me to have some feed to read whenever I'm on my phone, data is also cached so I can read on my commute where there's no consistent internet access.

renewiltord•1d ago

Cool stuff. You have tags but no filtering on tags sadly. I think that would be the most valuable.

Tempest1981•1d ago

Very nice. Most posts are classified as "Non-technical post" these days.

Was hoping for a way to filter on "technical", for when I need my dose of hacking and technology. (Filter on category could also help, but I assume there are many technical categories.)

And maybe reverse sort, for when I'm tired of controversy.

ugh123•1d ago

I really like this. Although I see a lot of posts leading with "Non-technical post" which seems misapplied in a lot of cases and otherwise too much of a generalization for a technical audience to glean anything useful from.

nextstep•1d ago

Israel used Palantir technologies in pager…

“ Contrarian View(highly upvoted) Many argued the attack was a highly targeted, lawful military operation against Hezbollah's command, achieving military goals with remarkably low civilian harm compared to conventional warfare.”

What a sad world we live in. This site really is a cesspool of American fascism, and the community is not doing enough to take a stance against that

rcarmo•1d ago

Very nice indeed. I recently went through a similar process and built an RSS feed summarizer, but didn’t bother with comments because… well… it could go either way in terms of productivity and token usage (I prefer to grab the original article and summarize it when feasible).

But I really like the output.

marsw42•14h ago

Thanks! Yeah I'm still trying to figure out ways to save tokens, but given the job only runs 3 times a day it's still kinda manageable :P

jimmySixDOF•1d ago

How is this determining a comment is "Highly Upvoted" on HN where that is explicitly kept out of the ui/ux and new comments are a/b tested across users etc... it's not a thing you can know. I have had comments with a big number of descendents but very low upvotes so thats not a reliable indicator either. Genuinely curious.

marsw42•14h ago

Here is the prompt I used!

* contrarian_view: * Look for the most upvoted comment that DISAGREES with the article's premise or the majority sentiment * This is the "steelman" of the opposing view - the most compelling counter-argument * If no significant contrarian view exists, set has_contrarian to false * Focus on constructive disagreement, not flame wars

tomhow•1d ago

[under-the-rug stub]

[see https://news.ycombinator.com/item?id=45988611 for explanation]

jrdnpsnc•1d ago

Looks great Two things: - I second the whole vertical space thing of MrCoffee - I feel like clicking on the title should either take you to the post (I know there is a link but it feels un-intuitive).

Gg otherwise!

9vigugfgg•1d ago

This is perfect for me. I want to stay updated on the same kind of information that is shared here, but i don't care about cred points and find the social networking aspect of hn to be a codified toxic echo chamber.

Thus i love the contrarian take.

I also love that you can switch the default analysis from the story to the comments.

I think this is a good use of ai. Using ai a a creative crutch is dehumanizing like all division of labor as Adam Smith described in his magnum opus was a major problem with capitalism. As we see.

However, as it is wise enough to browse the covers of magazines, but skip the detail inside, so too it's it sufficient and better for the mind, body, and soul to merely browse what happened than the radioactive details from the brainwashed miscreants inside.

kiba•1d ago

What social networking aspect? The karma point is basically hidden from other posters.

fhutrr567•1d ago

Look at the green blue and red bars on the what happened summaries. Almost everyone here agrees with each other (mostly green) even on the most controversial issues, which what happened let's you sort by.

I can't wait for what happened IN THE WORLD!!!

that green bar is not a coincidence in a codified echo chamber.

Almost no one is allowed to disagree with the consensus here and then only in a particular way. Some dissent is outright banned.

Like for example, try suggesting any of the following ideas: Trump is misunderstood, feminism is bad for women, mrna shots aren't vaccines, vc increases pain, suffering and failure, etc.

No discussion like that, among countless other ideas will get your account immediately shadow banned.

So it appears that there's consensus about what "truth" is, as proven now by what happened's green and red bars, but in reality contrarians are forced to lurk.

And what I just said only touches the surface of the many significant issues with this community.

Go deeper and you find some sinister tactics being used to control the narrative.

Good luck seeing this post. I know it was a waste of time to write it.

dugidugout•1d ago

If you look at the site in question closer, it states that the "green, blue, and red bars" mean "constructive, technical, and flame war".

If I had to guess, you likely have some heavy premises that blind you from engaging with the content of a post. I'm not going to pretend there isn't some truth in your premises, however I would imagine there would be "many significant issues with [any] community" if we all operated this carelessly.

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Show HN: WhatHappened – HN summaries, heatmaps, and contrarian picks

Comments