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Show HN: HNswered – watches for replies to your Hacker News posts and comments

https://github.com/adam-s/HNswered
9•dataviz1000•3h ago

Comments

dvt•1h ago
At least write the README yourself, it's like 4 sentences.
scratchyone•1h ago
also

> A self-contained security audit prompt is available at docs/security-audit.md.

lmfao

dataviz1000•1h ago
I spent at least 10 hours testing it yesterday. I got a lot of relief when the number badge incremented telling me that some commented on this post. Thank you.

To me the most interesting thing is the different red team adversary agents I'm using. There is a Jony Ive design critic agent which is surprisingly very good, a red team agent that does normal code review and bug hunting by injecting logging into the code running it in isolation in the /tmp/ folder, a red team agent that code reviews and find bugs in the test harnesses, and an agent that does mutation testing by breaking the code creating regressions to make sure that the test harness catch them -- I wanted to call it the trickster agent but did didn't want to drift from training and density in the LLM model.

I did a huge amount of experimentation last week discovering that if a model misses a bug or gets something wrong, running an adversary agent using the same model or family of models will not surface it. Everyone has the intuition about that but I can describe why using data. So Claude writes code that is orders of magnitude better than any project I inherited in the past 15 years and I'd have ChatGPT run all the adversaries.

In order to surface replies to posts and comments it requires huge amounts requests so I needed to figure out what the optimal request rate is based on frequency of replies over time. First posts get replies after a week so there isn't any reason to surface them. After analysis, I can conclude a request every 5 minutes in the background is enough. What is that 288 (pollComments) + 144 (author-sync) = 432 requests/day per user? I spent a couple hours on that. Actually, I started with the Hacker News API and then realized that I should check the https://hn.algolia.com/api but wanted to know which is optimal including using both. After experimentation and research I discovered that ~432 requests a day at Algolia is enough.

mindcrime•1h ago
Does anybody have a master list of all of the projects that implemented this (or something very similar) over the years? It's got to be a pretty long list by now.

The weird part is, there seems to be enough demand for this that these keep popping up, but not so much that any of them ever hang around.

dataviz1000•58m ago
Before starting I tried searching but I couldn't find anything. Frequently I come across comments about people wanting this feature.

Here is the proof. [0]

> yes please! i need a "comment to follow" functionality on HN

So I built it. I built this for one user named swyx. I'm going to email him now letting him know I built it.

[0] https://news.ycombinator.com/item?id=47402785

mindcrime•40m ago
There have definitely been a few over the years, especially if you include scenarios beyond just "get notified for replies". Some have been webapps, some have been browser plugins, etc.

Here's some discussion of one recent one:

https://news.ycombinator.com/item?id=21172406

And some more:

https://news.ycombinator.com/item?id=42814917

And HNChat, which went a little further:

https://news.ycombinator.com/item?id=12431724

That said, don't take this as criticism. It's clearly something that some HN users want. If you can make it stick, more power to you!

vunderba•33m ago
There have been quite a few of them over the years in varying degrees of complexity. I think the most well-known one is probably HN Replies. A simple Github search returns the following results.

HN Notifier

https://github.com/meanands/hn-notifier

Hacker New Telegram Bot

https://github.com/lawxls/HackerNews-Alerts-Bot

HN Reply Notifier

https://github.com/lotsofnoise/hn-reply-notifier

And there have been Show HNs on them as well.

Show HN: I built an open-source notification inbox widget for Hacker News

https://news.ycombinator.com/item?id=36373123

Show HN: HN Reader – Track your conversations across Hacker News

https://news.ycombinator.com/item?id=46240221

I (and probably a lot of other HN users) built my own bespoke HN suite that notifies me on replies, stories that I might be interested in, etc. It just sits quietly on a VPS and sends messages to me over Signal. Never open-sourced it because the code is a dire abomination.

Yours is probably the first Chrome side-panel variation that I've seen though.

rtaylorgarlock•51m ago
Can we get one which scans for downvotes on comments which are either positive or in anyway against any dominant narrative in HN? *If you feel attacked by this comment, you know exactly what to do. Do it. Fulfill your destiny.
dataviz1000•43m ago
What do you mean by this?

I was thinking allowing people to follow users so they get a stream of posts and comments from users they are interested in the side bar

xnx•50m ago
Also

https://hnrss.github.io/

https://hnreplies.com

latchkey•31m ago
I'll add this to Orange Juice soon too.

You should just submit a PR to OJ.

https://github.com/OrangeJuiceExtension/OrangeJuice/issues/3

dataviz1000•25m ago
Awesome!

If one other person uses it, it is good enough for me.

If you use it and want more features, post in the issue queue or respond to one of my comments -- I'll get it.

The engine that makes the requests and does the logic is agnostic and probably is portable copy and paste into your project. The one thing I have are all the tests and red team adversary agents that do very well to surface bugs.

Google Plans to Invest Up to $40B in Anthropic

https://www.bloomberg.com/news/articles/2026-04-24/google-plans-to-invest-up-to-40-billion-in-ant...
186•elffjs•7h ago•262 comments

My audio interface has SSH enabled by default

https://hhh.hn/rodecaster-duo-fw/
117•hhh•3h ago•21 comments

Iliad fragment found in Roman-era mummy

https://www.thehistoryblog.com/archives/75877
67•wise_blood•2d ago•7 comments

The Classic American Diner

https://blogs.loc.gov/picturethis/2026/04/the-classic-american-diner/
121•NaOH•4h ago•62 comments

Sabotaging projects by overthinking, scope creep, and structural diffing

https://kevinlynagh.com/newsletter/2026_04_overthinking/
339•alcazar•8h ago•82 comments

Google Flow Music

https://www.flowmusic.app/
36•hmokiguess•2h ago•20 comments

Show HN: I've built a nice home server OS

https://lightwhale.asklandd.dk/
22•Zta77•1h ago•9 comments

FusionCore: ROS 2 sensor fusion (IMU and GPS and encoders)

https://github.com/manankharwar/fusioncore
5•kharwarm•37m ago•0 comments

There Will Be a Scientific Theory of Deep Learning

https://arxiv.org/abs/2604.21691
88•jamie-simon•5h ago•27 comments

Work with the garage door up

https://notes.andymatuschak.org/Work_with_the_garage_door_up
87•jxmorris12•3d ago•74 comments

Diatec, known for its mechanical keyboard brand FILCO, has ceased operations

https://gigazine.net/gsc_news/en/20260424-filco-diatec/
81•gslin•6h ago•25 comments

Tell HN: Claude 4.7 is ignoring stop hooks

57•LatencyKills•3h ago•48 comments

How to be anti-social – a guide to incoherent and isolating social experiences

https://nate.leaflet.pub/3mk4xkaxobc2p
283•calcifer•12h ago•279 comments

Email could have been X.400 times better

https://buttondown.com/blog/x400-vs-smtp-email
101•maguay•1d ago•91 comments

Spinel: Ruby AOT Native Compiler

https://github.com/matz/spinel
296•dluan•14h ago•80 comments

I cancelled Claude: Token issues, declining quality, and poor support

https://nickyreinert.de/en/2026/2026-04-24-claude-critics/
727•y42•7h ago•427 comments

I'm done making desktop applications (2009)

https://www.kalzumeus.com/2009/09/05/desktop-aps-versus-web-apps/
134•claxo•7h ago•151 comments

SFO Quiet Airport (2025)

https://viewfromthewing.com/san-francisco-airport-removed-90-minutes-of-daily-noise-travelers-say...
113•CaliforniaKarl•4h ago•65 comments

MacBook Neo and how the iPad should be

https://craigmod.com/essays/ipad_neo/
173•jen729w•1d ago•98 comments

CC-Canary: Detect early signs of regressions in Claude Code

https://github.com/delta-hq/cc-canary
32•tejpalv•5h ago•16 comments

You don't want long-lived keys

https://argemma.com/blog/long-lived-keys/
5•kkl•3d ago•1 comments

OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

https://developers.openai.com/api/docs/changelog
187•arabicalories•4h ago•108 comments

SDL Now Supports DOS

https://github.com/libsdl-org/SDL/pull/15377
205•Jayschwa•6h ago•72 comments

DeepSeek v4

https://api-docs.deepseek.com/
1773•impact_sy•20h ago•1376 comments

Show HN: Browser Harness – Gives LLM freedom to complete any browser task

https://github.com/browser-use/browser-harness
68•gregpr07•8h ago•28 comments

Different Language Models Learn Similar Number Representations

https://arxiv.org/abs/2604.20817
87•Anon84•8h ago•35 comments

TIPSv2: Advancing Vision-Language Pretraining with Enhanced Patch-Text Alignment

https://gdm-tipsv2.github.io/
16•gmays•3h ago•1 comments

CSS as a Query Language

https://evdc.me/blog/css-query
51•evnc•5h ago•18 comments

Physicists revive 1990s laser concept to propose a next-generation atomic clock

https://phys.org/news/2026-04-physicists-revive-1990s-laser-concept.html
48•wglb•22h ago•7 comments

Redesigning the Recurse Center application to inspire curious programmers

https://www.recurse.com/blog/192-redesigning-the-recurse-center-application
50•nicholasjbs•6h ago•9 comments