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Show HN: ChartGPU – WebGPU-powered charting library (1M points at 60fps)
huntergemmer about 8 hours ago

Show HN: ChartGPU – WebGPU-powered charting library (1M points at 60fps)

Creator here. I built ChartGPU because I kept hitting the same wall: charting libraries that claim to be "fast" but choke past 100K data points.

The core insight: Canvas2D is fundamentally CPU-bound. Even WebGL chart libraries still do most computation on the CPU. So I moved everything to the GPU via WebGPU:

- LTTB downsampling runs as a compute shader - Hit-testing for tooltips/hover is GPU-accelerated - Rendering uses instanced draws (one draw call per series)

The result: 1M points at 60fps with smooth zoom/pan.

Live demo: https://chartgpu.github.io/ChartGPU/examples/million-points/

Currently supports line, area, bar, scatter, pie, and candlestick charts. MIT licensed, available on npm: `npm install chartgpu`

Happy to answer questions about WebGPU internals or architecture decisions.

github.com
439 137
Summary
Stories removed from the Hacker News Front Page, updated in real time (2024)
akyuu about 11 hours ago

Stories removed from the Hacker News Front Page, updated in real time (2024)

This repository tracks the removal of stories from Hacker News, providing insight into the moderation practices of the platform. It serves as a tool for understanding the types of content that are removed and the potential implications for the community.

github.com
232 159
Summary
Claude's new constitution
meetpateltech about 7 hours ago

Claude's new constitution

https://www.anthropic.com/constitution

anthropic.com
195 128
Summary
Swedish Alecta has sold off an estimated $8B of US Treasury Bonds
madspindel about 10 hours ago

Swedish Alecta has sold off an estimated $8B of US Treasury Bonds

The article reveals that Alecta, one of Sweden's largest pension funds, has dumped a significant portion of its holdings in American government bonds, amid concerns over the U.S. federal budget deficit and rising inflation.

di.se
97 57
Summary
Comic-Con Bans AI Art After Artist Pushback
cdrnsf about 9 hours ago

Comic-Con Bans AI Art After Artist Pushback

Comic Con International has banned the use of AI-generated artwork at its conventions, following backlash from artists who argued that the technology undermines their work and livelihood. The decision aims to address concerns about the impact of AI art on the creative community.

404media.co
93 65
Summary
Show HN: Rails UI
justalever about 5 hours ago

Show HN: Rails UI

RailsUI is a comprehensive open-source library of UI components and design tools for building modern, responsive web applications with Ruby on Rails. It provides a range of pre-built, visually appealing components that can be easily integrated into Rails projects to accelerate development and enhance the user experience.

railsui.com
81 58
Summary
eBay explicitly bans AI "buy for me" agents in user agreement update
bdcravens about 2 hours ago

eBay explicitly bans AI "buy for me" agents in user agreement update

eBay has banned the use of AI agents and updated its user agreement, requiring arbitration of disputes starting in February 2026. The changes aim to address concerns around the use of AI tools and ensure a fair dispute resolution process for eBay users.

valueaddedresource.net
66 33
Summary
Slouching Towards Bethlehem – Joan Didion (1967)
jxmorris12 about 6 hours ago

Slouching Towards Bethlehem – Joan Didion (1967)

The article explores the life and work of renowned American author Joan Didion, highlighting her enduring influence on literary and cultural discourse through her incisive observations and distinctive writing style. It provides insights into Didion's personal experiences and the themes that have defined her acclaimed body of work.

saturdayeveningpost.com
44 1
Summary
Show HN: yolo-cage – AI coding agents that can't exfiltrate secrets
borenstein about 8 hours ago

Show HN: yolo-cage – AI coding agents that can't exfiltrate secrets

I made this for myself, and it seemed like it might be useful to others. I'd love some feedback, both on the threat model and the tool itself. I hope you find it useful!

Backstory: I've been using many agents in parallel as I work on a somewhat ambitious financial analysis tool. I was juggling agents working on epics for the linear solver, the persistence layer, the front-end, and planning for the second-generation solver. I was losing my mind playing whack-a-mole with the permission prompts. YOLO mode felt so tempting. And yet.

Then it occurred to me: what if YOLO mode isn't so bad? Decision fatigue is a thing. If I could cap the blast radius of a confused agent, maybe I could just review once. Wouldn't that be safer?

So that day, while my kids were taking a nap, I decided to see if I could put YOLO-mode Claude inside a sandbox that blocks exfiltration and regulates git access. The result is yolo-cage.

Also: the AI wrote its own containment system from inside the system's own prototype. Which is either very aligned or very meta, depending on how you look at it.

github.com
42 61
Summary
Spotify won court order against Anna's Archive, taking down .org domain
voxadam about 3 hours ago

Spotify won court order against Anna's Archive, taking down .org domain

The article discusses an incident where the 'Anna's Archive' website was suspended, which was initially attributed to a Spotify data scrape. However, the article states that the suspension was actually due to a different issue unrelated to the Spotify data scrape, and the website has since been restored.

arstechnica.com
26 11
Summary
TrustTunnel: AdGuard VPN protocol goes open-source
kumrayu about 6 hours ago

TrustTunnel: AdGuard VPN protocol goes open-source

AdGuard VPN has announced the open-sourcing of its VPN protocol, TrustTunnel, providing transparency and enabling the community to audit and contribute to the protocol's development. This move aims to enhance trust and security in AdGuard VPN's offerings.

adguard-vpn.com
24 2
Summary
Challenges in join optimization
HermitX about 6 hours ago

Challenges in join optimization

The article explores the performance advantages of StarRocks, a distributed SQL database, focusing on its efficient join operations. It highlights how StarRocks' unique architectural design and query optimization techniques enable significantly faster join processing compared to traditional database systems.

starrocks.io
23 1
Summary
MAGA Delusions of Economic Leverage
rbanffy about 12 hours ago

MAGA Delusions of Economic Leverage

The article discusses the MAGA movement's belief in the economic leverage of the United States, arguing that this belief is a delusion and that the U.S. has significantly less economic power than many believe. It examines the misconceptions and flawed assumptions underlying this belief.

paulkrugman.substack.com
18 2
Summary
Show HN: UltraContext – A simple context API for AI agents with auto-versioning
ofabioroma about 9 hours ago

Show HN: UltraContext – A simple context API for AI agents with auto-versioning

Hey HN! I'm Fabio and I built UltraContext, a simple context API for AI agents with automatic versioning.

After two years building AI agents in production, I experienced firsthand how frustrating it is to manage context at scale. Storing messages, iterating system prompts, debugging behavior and multi-agent patterns—all while keeping track of everything without breaking anything. It was driving me insane.

So I built UltraContext. The mental model is git for context:

- Updates and deletes automatically create versions (history is never lost)

- Replay state at any point

The API is 5 methods:

  uc.create()   // new context (can fork from existing)
  uc.append()   // add message
  uc.get()      // retrieve by version, timestamp, or index
  uc.update()   // edit message → creates version
  uc.delete()   // remove message → creates version
Messages are schema-free. Store conversation history, tool calls, system prompts—whatever shape you need. Pass it straight to your LLM using any framework you'd like.

What it's for:

- Persisting conversation state across sessions

- Debugging agent behavior (rewind to decision point)

- Forking contexts to test different flows

- Audit trails without building audit infrastructure

- Multi-agent and sub-agent patterns

What it's NOT:

- Not a memory/RAG system (no semantic search)

- Not a vector database

- Not an Orchestration/LLM framework

UltraContext handles versioning, branching, history. You get time-travel with one line.

Docs: https://ultracontext.ai/docs

Early access: https://ultracontext.ai

Would love feedback! Especially from anyone who's rolled their own context engineering and can tell me what I'm missing.

ultracontext.ai
15 18
Summary
Trump Mixes Up Iceland and Greenland in Incoherent Davos Speech
doener about 5 hours ago

Trump Mixes Up Iceland and Greenland in Incoherent Davos Speech

In a speech at the World Economic Forum in Davos, Switzerland, former U.S. President Donald Trump confused Iceland and Greenland, mistakenly referring to one as the other. This gaffe highlights Trump's tendency to make factual errors during public appearances.

newrepublic.com
12 2
Summary
Canada Announces Divorce from America
mooreds about 10 hours ago

Canada Announces Divorce from America

Canada announces its intention to distance itself from the United States politically and economically, citing divergent values and priorities between the two neighboring countries.

charlotteclymer.substack.com
12 0
Summary
What if AI is both good and not that disruptive?
nr378 about 2 hours ago

What if AI is both good and not that disruptive?

The article explores the implications of artificial intelligence (AI) being both highly capable and widely deployed, raising concerns about the potential for unintended consequences and the need for careful governance and oversight of this powerful technology.

deadneurons.substack.com
12 9
Summary
71 Percent of Americans Say US Is 'Out of Control' Under Trump
doener about 5 hours ago

71 Percent of Americans Say US Is 'Out of Control' Under Trump

A new poll by Newsweek finds that a majority of Americans believe the country is 'out of control' under the Trump administration, with concerns over the president's leadership and the direction of the nation.

newsweek.com
11 2
Summary
Immigration officers assert power to enter homes without a warrant
duxup about 1 hour ago

Immigration officers assert power to enter homes without a warrant

The article discusses the arrest of several people in Minneapolis by Immigration and Customs Enforcement (ICE) agents, despite the city's status as a sanctuary city. It examines the ongoing tensions between local governments and federal immigration enforcement efforts.

apnews.com
10 6
Summary
Show HN: I built a narrative game about running a thrift shop
hollowlimb about 10 hours ago

Show HN: I built a narrative game about running a thrift shop

We use optical illusion-style puzzles to reflect the characters’ psychology.

store.steampowered.com
9 0
Summary