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Show HN: I replaced my portfolio's hero with a Terminal to filter non-tech leads

1•andresrl•44s ago•0 comments

I know what you download

https://iknowwhatyoudownload.com/
1•Sparkenstein•1m ago•0 comments

Amazon Offers Test of 'Ultrafast' Delivery in Two US Cities

https://www.bloomberg.com/news/articles/2025-12-01/amazon-offers-test-of-ultrafast-delivery-in-tw...
1•thm•2m ago•0 comments

Young Adults in China pay pretend to work companies

https://www.bbc.com/news/articles/cdd3ep76g3go
2•sien•3m ago•1 comments

Show HN: Doomscrolling Research Papers

https://www.openpaperdigest.com/
3•davailan•9m ago•0 comments

Show HN: Quash – A mobile-use agent for Android QA

https://quashbugs.com
4•pr_khar•13m ago•3 comments

Gelephu Mindfulness City

https://en.wikipedia.org/wiki/Gelephu_Mindfulness_City
1•austinjp•15m ago•0 comments

GNU Guile 3.0.11

https://lists.gnu.org/archive/html/info-gnu/2025-12/msg00002.html
3•delitrem•15m ago•0 comments

Silicon Valley Builds Amazon and Gmail Copycats to Train A.I. Agents

https://www.nytimes.com/2025/12/02/technology/silicon-valley-builds-amazon-and-gmail-copycats-to-...
1•JumpCrisscross•17m ago•0 comments

The Fastest Physics Yet [Video]

https://www.youtube.com/watch?v=tjtwSq3u6Dg
1•lionkor•18m ago•1 comments

We just shipped portfolio-level screening in InterviewFlowAI

https://interviewflowai.com/
1•mukulmunjal•20m ago•2 comments

Go proposal: Type-safe error checking

https://antonz.org/accepted/errors-astype/
2•henrikhorluck•21m ago•1 comments

TIC-80: Free open-source fantasy console for making tiny games

https://github.com/nesbox/TIC-80
2•victorbuilds•24m ago•0 comments

India tells smartphone makers to put state-run cyber safety app on new devices

https://www.bbc.com/news/articles/cedxyvx74p4o
2•debarshri•25m ago•0 comments

Disco – Self-hosted PaaS for teams outgrowing Render and Heroku

https://disco.cloud/
2•tosh•26m ago•1 comments

My Complicated Relationship with Side Projects

https://lopezb.com/articles/my-complicated-relationship-with-side-projects
1•lopezb•28m ago•0 comments

But why is AI bad?

https://daymare.net/blogs/but-why-is-ai-bad/
3•victorbuilds•29m ago•5 comments

Show HN: Elf – A CLI Helper for Advent of Code

https://github.com/cak/elf
3•cak•30m ago•2 comments

Exposure for Designers

https://hvpandya.com/exposure
1•hvpandya•30m ago•1 comments

Systems, Stables and Stars

https://hvpandya.com/systems-stables-stars
1•hvpandya•31m ago•1 comments

CD4T cells acquire Eomesodermin to modulate cellular senescence and aging

https://www.nature.com/articles/s43587-025-00953-8
1•wslh•34m ago•0 comments

Anacondas Have Been the Same Size for over 12 Million Years, Fossils Reveal

https://scienceclock.com/fossils-reveal-anacondas-have-been-the-same-size-for-over-12-million-years/
1•ashishgupta2209•34m ago•0 comments

Another open source project dies of neglect, leaving thousands scrambling

https://www.theregister.com/2025/12/02/ingress_nginx_opinion/
4•defrost•38m ago•1 comments

India orders phone makers to preload devices with state-owned cyber safety app

https://www.theguardian.com/technology/2025/dec/01/india-phone-sanchar-saathi-app-cybersecurity
3•vinni2•38m ago•0 comments

Deformable Object Manipulation

https://twitter.com/yusufma555/status/1995710878621331719
1•gokhan•39m ago•0 comments

Man unexpectedly cured of HIV after stem cell transplant

https://www.newscientist.com/article/2506595-man-unexpectedly-cured-of-hiv-after-stem-cell-transp...
7•doener•44m ago•0 comments

Show HN: I made a yule themed secret Santa system for my family

https://yule.lingon.land/
3•lingonland•44m ago•0 comments

Ukraine developing independent AI system with Google open technology

https://www.reuters.com/business/media-telecom/ukraine-developing-independent-ai-system-with-goog...
4•giuliomagnifico•45m ago•0 comments

I have high levels of forever chemicals in my blood – what can I do about it?

https://www.bbc.com/news/articles/ce8z8pv1e0ko
4•breve•47m ago•0 comments

Complete AD&D 2nd edition compendium

https://www.completecompendium.com/
1•rogermungo•48m ago•0 comments
Open in hackernews

Show HN: Elf – A CLI Helper for Advent of Code

https://github.com/cak/elf
3•cak•30m ago
I built a CLI tool called elf to streamline Advent of Code workflows. It removes a lot of the repetitive steps around fetching inputs, submitting answers safely, and checking private leaderboards.

The tool focuses on: - Input fetching with caching (no repeated downloads, works offline) - Safe answer submissions with guardrails to prevent duplicate or invalid guesses - Private leaderboard viewer (table or JSON) - Status calendar and guess history viewer - Optional Python API for scripting or automation

It’s built with Typer, httpx, Pydantic, and Rich, and aims to be clean, predictable, and easy to extend.

Repo: https://github.com/cak/elf PyPI: https://pypi.org/project/elf/

Feedback and questions are welcome.

Comments

cak•28m ago
Happy to answer any questions about design choices, caching strategy, the guardrails for safe submissions, or anything else. If anyone uses AoC in a team or automation setup, I’m especially interested in what features would help.
youchen_•14m ago
This looks like a really useful tool for Advent of Code! The caching feature and offline support are great additions. Having a clean CLI interface makes the workflow so much smoother. Thanks for sharing!