What is Hackers' Pub?

Hackers' Pub is a place for software engineers to share their knowledge and experience with each other. It's also an ActivityPub-enabled social network, so you can follow your favorite hackers in the fediverse and get their latest posts in your feed.

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silverpill @silverpill@mitra.social
Public
Shared by @reiver ⊼ (Charles) :batman:

Recently, there was a discussion about generic #ActivityPub servers. Several people claimed that they were working on one, but it turned out that their "generic" servers only support activities defined in the ActivityPub specification. Such a server shouldn't be called generic. It is not difficult to build, neither it is an interesting concept because competing protocols (e.g. Nostr) already offer much more.

I've been writing a #FEP that describes how to build a real generic server. It is not finished yet, but I feel like now is a good time to publish it:

FEP-fc48: Generic ActivityPub server

This kind of server:

- Can process any object type, and can process non-standard activities like EmojiReact.
- Compatible with FEP-ae97 clients.
- Does not require JSON-LD.

I attempted to implement it when I was researching security properties of FEP-ae97 API: https://codeberg.org/silverpill/fep-ae97-server. Back then I didn't know what to do with side effects, but now I think that we can simply force clients to specify them.

Special thanks to @mariusormarius and @trwnhinfinite love ⴳ for their input.

#C2S

Summary card of repository fediverse/fep, described as: Fediverse Enhancement Proposals

fep/fep/fc48/fep-fc48.md at main

fep - Fediverse Enhancement Proposals

codeberg.org · Codeberg.org

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Hacker News 50 @hn50@social.lansky.name
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PCB Tracer

Link: pcbtracer.com
Discussion: news.ycombinator.com/item?id=4

PCB Tracer: AI-Enhanced Reverse Engineering, Troubleshooting & Repair

Free browser-based Printed Circuit Board (PCB) reverse engineering tool for electronics. Trace signal paths through multi-layer PCBs with virtual X-Ray view. Annotate components, vias, traces, and pads. Perfect for PCB reverse engineering, circuit board reverse engineering, PCB analysis, PCB troubleshooting, PCB documentation, circuit board analysis, electronics troubleshooting, circuit board repair, PCB repair, and PCB learning. Features include: PCB trace, PCB tracing, printed circuit board trace, printed circuit board tracing, signal path tracing, via tracing, trace analysis, component annotation, PCB component identification, multi-layer PCB analysis, PCB x-ray view, X-Ray view, virtual X-Ray, PCB X-Ray, PCB annotation, PCB design, electronics reverse engineering, electronics tool, electronics learning, PCB viewer, PCB editor, online PCB tool, browser PCB tool, free PCB software, PCB reverse engineering software, PCB trace tool, PCB netlist, PCB schematic, KiCad export, BOM export, Bill of Materials, circuit connections, copper traces, SMD pads, through-hole pads, voltage buses, ground connections, board dimensions, PCB measurements, PCB scaling, debugging circuits, test points, component placement, pin connections, power nodes, ground nodes, PCB photographs, circuit documentation, PCB analysis tool, PCB reverse engineering tool, AI-powered component identification, artificial intelligence, Gemini, Claude, supervised learning, connection tracking, pin-to-pin connections, net building, net naming, assign meaningful names to nets, named nets, record measurements. No installation required.

pcbtracer.com · PCB Tracer

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もちゃ(あと-12.40Kg) @mot@mastodon.motcha.tech
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キーボードに4万円出せないでしょっていう気持ちはめっちゃあるけど、こちとら1日のうち4時間とか5時間は少なくともキーボード触ってんだって考えると、ここに対する投資でモチベ上がるなら安いかっていう言い訳ががががが

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복설 뉴스 @boknews.bsky.social@bsky.brid.gy
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Shared by 레몬그린🍋

트럼프 “앤트로픽은 좌파 광신도, 정부기관서 클로드 쓰지 마라”···‘AI 병기’ 거부에 보복 www.khan.co.kr/article/2026... "클로드는 현재 미군 기밀 시스템에서 사실상 유일하게 활용 가능한 AI로 알려져 있다. 국방부는 이를 향후 ‘합법적인 모든 목적’에 제한 없이 사용하겠다는 입장을 밝혀왔다. 반면 앤트로픽은 자사 AI 모델이 자국민을 대상으로 한 대규모 감시 활동이나 완전 자율무기 체계에 활용돼서는 안 된다는 원칙을 고수해왔다."

트럼프 “앤트로픽은 좌파 광신도, 정부기관서 클로드 쓰...

트럼프 “앤트로픽은 좌파 광신도, 정부기관서 클로드 쓰지 마라”···‘AI 병기’ 거부에 보복

도널드 트럼프 미국 대통령이 27일(현지시간) 모든 연방기관에 인공지능(AI) ‘클로드’ 개발사인 앤트로픽의 기술 사용을 중단하라고 지시했다. 국방부가 AI의 군사적 활용 범위를 전면 개방하라고 요구한 데 대해 앤트로픽이 거부 입장을 밝히면서, 양측 간 갈등이 정면 충돌로 번지는 양상이다. 트럼프 대통령은 이날 소셜미디어 트루스소셜에서 “미국은 절대로...

www.khan.co.kr · 경향신문

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Maho 🦝🍻 @mapache@hachyderm.io
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Shared by @reiver ⊼ (Charles) :batman:

I’m building a new tool and looking for volunteers to test it! A linktree.

It’s designed for two types of people:

Normies / newcomers – Think of it like a free, privacy-respecting Linktree. No trackers, no ads. But here's the cool part: it's a Trojan horse for the fediverse. Your profile link is itself an ActivityPub actor. That means people can interact with it directly in the fediverse, and it encourages exploration of open platforms.

Fediverse users, If you have multiple accounts (, , Loops, a federated blog…), you know the struggle: sometimes you just want one persona to follow. This tool gives you that. It doesn’t post on its own (read-only), but it boosts all your other accounts and even has its own inbox. PLUS it can receive and show your badges issued by @badgefedThe BadgeFed Project !

Interested in testing? Reply here, I will reach out in the next 24-48hrs with an invitation link.

One webpage screenshot in white background and big letters saying Your links, Your Identity our NetworkA screenshot of links in rows, showing a profile with Pixelfed, Blog, Mastodon, LinkedIn links among others.
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Charles Oliver Nutter @headius@mastodon.social
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I think it's pretty telling that after stealing the entirety of the world's Open Source Software to train their models, *none* of the AI code tool companies offer discounted or free plans to OSS projects. Just another slap in the face from the biggest OSS pirates in history. Guess I won't be able to use them to support our users without some generous donations.

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David Bushell ☕ @db@social.lol
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Shared by @reiver ⊼ (Charles) :batman:

a shocking number of web dev blogs are missing CORS headers!

only 46 of the 200+ feeds I subscribe to can be accessed by web-based RSS readers :(

Learn how and why: blogsareback.com/guides/enable

I'll give you 30 days before I name and shame 😈

Blogs Are Back — Discover and follow independent blogs

Enable CORS for Your Blog

Learn how to enable CORS headers on your RSS feed to make it work faster with browser-based readers. Step-by-step guides for Netlify, Vercel, Cloudflare, Nginx, Apache, and more.

www.blogsareback.com · Blogs Are Back

Link author: Blogs Are Back@blogsareback@mastodon.social

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kazuhito @kazuhito@vivaldi.net
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Between the Dots: What Designers Miss Without Braille Users helenkeller.org/between-the-do

Between the Dots: What Designers Miss Without Braille Users

Braille users experience technology differently than both sighted users and screen reader users. Helen Keller Services Accessibility Specialist Megan Dausch explains what developers and design teams need to understand about braille displays, focus management, and dynamic content to create truly accessible digital experiences.

www.helenkeller.org · Helen Keller Services

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여기서도 그냥냥씨 @nyanyanyangc.bsky.social@bsky.brid.gy
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효과적인 그림 학습법에 대한 영상. 요약하자면 '나중에 쓰기 위한 학습(J.I.C. = Just in case)'은 효율이 떨어지며, 실제로 작품을 만들면서 '필요한 그 순간에 학습(J.I.T. = Just in time)'하는 것이 훨씬 효과적이라는 얘기. youtu.be/h8S_mno1SCA?...

The LAZIEST way to improve you...

The LAZIEST way to improve your art is actually the FASTEST

🔥 Get a massive 38% OFF the ART School: Digital Artists program 🎓 https://cubebrush.co/mb/products/0dpzeg/art-school until February 28th 2026 ONLY to celeb...

www.youtube.com · YouTube

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HyoYoshikawa @hyoyoshikawa@toot.blue
Public

トランプや高市氏はそういう難しい話がわからない。

（引用

Anthropicがペンタゴンとの件で声明を発表。Anthropicはそもそも中国を敵視してて米国がAIで勝つためには何でもするぞ！というような企業だから、当初はペンタゴンや米国諜報機関にジャンジャンClaude使わせてあげてた。「ただし、ウチのAI使って国民監視やAI自律兵器やるのだけは例え米国政府でもダメです。」というルールだけを付けていた。国民監視は民主主義に反するし、AI自律兵器は危険すぎる。それなのにペンタゴンは「AIの使い方にゴチャゴチャ文句付けるな！いいから黙ってセーフガード全部外せ！」とキレ散らかしてる。おかしくね？国民監視や自律兵器に使う予定でもない限りこんなルールあっても何も問題無いはずだが？だから我々はペンタゴンの要求を拒否した。
との事。Anthropicは米国の味方だけど、あくまで民主主義の理念に則った米国の味方であって、薄汚い反民主的な
x.com/umiyuki_ai/status/202725

x.com · X (formerly Twitter)

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