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Ask HN: What AI agents have you built?

2•ludovicianul•5h ago
Just curious about how people are using AI agents for their personal (or commercial) use. And which models you are using.

Comments

andrewrn•4h ago
I made this agent to tutor physics with diagrams! It's basic and my first agent and actually only has a single tool to call, but I really enjoyed building the agent loop from scratch rather than using a framework. Uses 4.1 for fast but reasonably intelligent, then o3 I think for diagram generation.

https://www.physicsviewer.com

PaulHoule•4h ago
A smart RSS reader that filters 110 feeds down to what I can handle.
vinibrito•4h ago
A whatsapp responder

Hi, I'm founder. I have 20 domains and a dozen Supabase accounts and earned zero

https://www.dontbuildthat.com/landing
1•dropkick_koala•4m ago•0 comments

RFK Jr.'s health department calls Nature "junk science," cancels subscriptions

https://arstechnica.com/health/2025/07/rfk-jr-s-health-department-calls-nature-junk-science-cancels-subscriptions/
18•duxup•6m ago•0 comments

The Path to Medical Superintelligence

https://microsoft.ai/new/the-path-to-medical-superintelligence/
1•jonbaer•13m ago•0 comments

State of the Spack community: the Road to Version 1.0 [video]

https://indico.fnal.gov/event/69557/
1•teleforce•15m ago•0 comments

Product-Market Fit Is Retrospective Fiction

https://www.thebrokevc.com/p/product-market-fit-is-retrospective-fiction-7c36
1•joanwestenberg•16m ago•0 comments

People are using AI to 'sit' with them while they trip on psychedelics

https://www.technologyreview.com/2025/07/01/1119513/ai-sit-trip-psychedelics/
2•pseudolus•21m ago•0 comments

The Hamburger Menu Is No Longer a Hamburger Menu

https://www.datagubbe.se/dimburger/
4•zdw•23m ago•0 comments

Does education increase intelligence and does it matter? (2024)

https://theinfinitesimal.substack.com/p/does-education-increase-intelligence
1•johntfella•23m ago•0 comments

Hot acetic acid enables full recycling of carbon fiber composite materials

https://phys.org/news/2025-06-hot-acetic-acid-enables-full.html
2•PaulHoule•25m ago•0 comments

I Built Neural AST That Works – It Fixed 274 TypeScript Errors Then Went Rogue

https://imgur.com/gallery/bnImeMk
1•StopUncle•25m ago•0 comments

The End of the Arctic? Ocean Could Be Ice Free by 2015

https://www.thedailybeast.com/the-end-of-the-arctic-ocean-could-be-ice-free-by-2015/
1•bilsbie•29m ago•0 comments

Castlevania: Symphony of the Night Decompilation Project

https://sotn.xee.dev/
1•retro_guy•32m ago•1 comments

Young Americans Are Spending a Whole Lot Less on Video Games This Year

https://www.gamespot.com/articles/young-americans-are-spending-a-whole-lot-less-on-video-games-this-year/1100-6532877/
3•andsoitis•36m ago•0 comments

Benchmark for Evaluating Text Embeddings

https://huggingface.co/spaces/embedding-benchmark/RTEB
2•fzliu•37m ago•0 comments

Celebrating love in all its forms across identities and relationships

https://childrensbookforall.org/readings/16
1•chbkall•41m ago•1 comments

Qantas customers involved in mammoth data breach

https://www.news.com.au/travel/travel-updates/incidents/qantas-customers-involved-in-mammoth-data-breach
1•aussieguy1234•42m ago•1 comments

New claim added: X opens up to Community Notes written by AI bots

https://www.theverge.com/news/696210/x-community-notes-ai-note-writers
3•bundie•42m ago•0 comments

HTTP: H Is for Hallucinated

https://www.jasonthorsness.com/28
1•jasonthorsness•44m ago•0 comments

The simple act of reading can be a crime in Malaysia. Here's why

https://www.rnz.co.nz/life/books/the-simple-act-of-reading-can-be-a-crime-in-malaysia-here-s-why
6•billybuckwheat•44m ago•0 comments

Hilbert's sixth problem: derivation of fluid equations via Boltzmann's theory

https://arxiv.org/abs/2503.01800
6•nsoonhui•1h ago•0 comments

Wider or Deeper? Scaling LLM Inference-Time Compute with Adaptive Tree Search

https://arxiv.org/abs/2503.04412
2•vrm•1h ago•0 comments

As wave of dementia cases looms, Law School looks to preserve elders’ rights

https://news.harvard.edu/gazette/story/2025/07/as-wave-of-dementia-cases-looms-law-school-looks-to-preserve-elders-rights/
2•gnabgib•1h ago•1 comments

Self-hostable AT Protocol backlink index that runs on a RPi 4

https://github.com/at-microcosm/links/tree/main/constellation
2•ffin•1h ago•0 comments

Cross-Device Flows: Security Best Current Practice

https://www.ietf.org/archive/id/draft-ietf-oauth-cross-device-security-10.html
3•mooreds•1h ago•0 comments

The Eiffel Tower is closed to tourists due to searing heat

https://www.cnn.com/2025/07/01/weather/europe-heat-wave-global-warming
1•mooreds•1h ago•0 comments

Dewdrop: A Java Event Sourcing Framework

https://dewdrop.events/
3•mooreds•1h ago•0 comments

You MUST Listen to RFC 2119

https://ericwbailey.website/published/you-must-listen-to-rfc-2119/
5•zdw•1h ago•1 comments

Show HN: Conduit – Turn large text files into listenable audio

https://conduit-landing-page-git-master-tobys-projects-a638df7e.vercel.app/
2•tboneskibs•1h ago•0 comments

Show HN: I built a procedural universe in Python to explore simulation theory

https://github.com/SurceBeats/Atlas
2•SurceBeats•1h ago•1 comments

Trump threatens Tesla, SpaceX support

https://www.reuters.com/business/autos-transportation/elon-musk-renews-criticism-trump-spending-bill-calls-new-political-party-2025-06-30/
10•geox•1h ago•4 comments