Tell HN: Anthropic no longer allowing Claude Code subscriptions to use OpenClaw

Anthropic is changing its policy for third-party harnesses, requiring extra usage and a pay-as-you-go option starting April 4. A one-time credit and discounts for pre-purchased extra usage are being offered to ease the transition.

Artemis II crew take β€œspectacular” image of Earth

https://ichef.bbci.co.uk/news/480/cpsprodpb/99c2/live/d50d99f0-2f7a-11f1-b297-95b0a0a8331e.jpg.webp
Nasa's Artemis II crew took high-resolution images of the Earth as they headed to the Moon. The images show the Atlantic Ocean, atmosphere, and auroras, with the Earth appearing upside down.

Show HN: I built a frontpage for personal blogs

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The frontpage of the indie web. Discover the latest posts from independent blogs across the web.

Show HN: Apfel – The free AI already on your Mac

https://raw.githubusercontent.com/Arthur-Ficial/apfel/main/screenshots/gui-chat.png
apfel is a CLI tool that exposes Apple's built-in LLM on Macs with Apple Silicon. It provides a way to access the LLM through a terminal, code, or chat, without network calls or API keys.

F-15E jet shot down over Iran

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A US F-15E Strike Eagle fighter was shot down over Iran, prompting a US search and rescue effort for its two crew members. One crew member was reportedly rescued in a high-risk operation, with the fate of the second crew member still unclear.

The FAA’s flight restriction for drones is an attempt to criminalize filming ICE

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The Trump administration issued a nationwide flight restriction preventing drones from flying near ICE or CBP vehicles, violating the First Amendment right to record law enforcement. The FAA has yet to respond to a letter demanding the restriction be lifted, which could last 21 months and impose severe penalties on violators.

iNaturalist

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iNaturalist is a social network for naturalists! Record your observations of plants and animals, share them with friends and researchers, and learn about the natural world.

Oracle files H-1B visa petitions amid mass layoffs

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Oracle filed 3,126 H-1B visa requests despite laying off thousands of American workers. The company's actions raise concerns about replacing US workers with cheaper foreign labor through the H-1B program.

OpenClaw privilege escalation vulnerability

OpenClaw before 2026.3.28 has a privilege escalation vulnerability in the /pair approve command path. A caller with pairing privileges can exploit this to approve device requests with broader scopes, including admin access.

Claude Code Found a Linux Vulnerability Hidden for 23 Years

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Nicholas Carlini used Claude Code to find multiple Linux kernel vulnerabilities, including a 23-year-old bug. The AI model required minimal oversight to find the bugs, highlighting its potential for discovering security vulnerabilities.

Marc Andreessen is wrong about introspection

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Marc Andreessen claims introspection is a modern pathology invented by Freud, but this is historically inaccurate and ignores the long history of self-examination in philosophy. His thin theory of human flourishing prioritizes external action over inner life, which is essential for understanding what makes a life worth living.

European alternatives to Google, Apple, Dropbox and 120 US apps

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European services offer secure, privacy-compliant solutions with strict regulations for environment and data protection. Made in Europe products prioritize quality, durability, and fair working conditions.

NHS staff refusing to use FDP over Palantir ethical concerns

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NHS staff are refusing to work on the Federated Data Platform due to ethical concerns with US-based provider Palantir. The government is under pressure to eject Palantir from NHS systems amid growing dissent over the company's suitability to manage national health data.

April 2026 TLDR Setup for Ollama and Gemma 4 26B on a Mac mini

Solar and batteries can power the world

https://nworbmot.org/blog/graphics/solar-battery-world/cost_map-260206-solarbatt-solarbatt90.png
Solar and batteries can supply 90% of electricity for 80% of the world's population at less than 80 €/MWh by 2030. Adding wind and other energy sources can help alleviate costs in high-latitude regions.

Post Mortem: axios NPM supply chain compromise

https://opengraph.githubassets.com/f9983af7987b96b630ed6c8505ed46dbfa8dedbc69b26466c39c2859e754850b/axios/axios/issues/10636
Two malicious versions of axios (1.14.1 and 0.30.4) were published to npm through a compromised account, installing a remote access trojan. The incident is resolved, but organizations should remove the versions and rotate sensitive credentials.

SSH certificates: the better SSH experience

SSH certificates provide a better and more seamless SSH experience by eliminating the need for Trust on First Use (TOFU) and allowing for short-lived keys, forced-commands, and automated key management. An SSH CA can be used to sign host keys and user keys, making it easier to manage SSH connections and eliminating the need for manual key deployment and TOFU.

Iran strikes leave Amazon availability zones "hard down" in Bahrain and Dubai

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Amazon's AWS availability zones in Dubai and Bahrain are down due to Iranian strikes and will be unavailable for an extended period. Amazon is advising employees to deprioritize the regions and is helping customers migrate to other locations.

Critics say EU risks ceding control of its tech laws under U.S. pressure

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US President refuses to back down on Greenland and Iran, while allies refuse support. Trump tries to keep Hungarian PM in power despite opposition to his policies.

Why are we still using Markdown?

You're frustrated with Markdown's complexity and inconsistencies, particularly with inline HTML and multiple ways to write the same thing. You think a minimal, well-defined markup language with a build system and compile-time hooks could solve many problems.

Run Linux containers on Android, no root required

https://opengraph.githubassets.com/bc8e9406d8e1959746af2a1397eb9ea378ce486aa05af258b42ff679780080a4/ExTV/Podroid
Podroid spins up a lightweight Alpine Linux VM on your phone using QEMU with a serial terminal and Podman container runtime. It allows running containers and persisting packages across reboots.

Running out of disk space in production

A server hosted on a small Hetzner machine running NixOS experienced a sudden surge in traffic, causing disk space issues due to a large influx of users downloading a 2.2GB file. The issues were resolved by clearing unnecessary files, moving the nix store to a separate volume, and disabling nginx buffering, resulting in a stable server with manageable disk usage.

Go on Embedded Systems and WebAssembly

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TinyGo brings Go to embedded systems and the web with a new LLVM-based compiler. It supports over 100 microcontrollers and produces WebAssembly code for web and edge computing.

Build your own Dial-up ISP with a Raspberry Pi

https://www.jeffgeerling.com/blog/2026/build-your-own-dial-up-isp-with-a-raspberry-pi/pi-isp-ibook-hero.jpeg
The user set up a local dial-up ISP using a Raspberry Pi and an old modem to emulate a dial-up connection on an iBook G3 from 1999. They used a phone line simulator and a USB modem to establish a connection and browsed the internet using Macproxy Classic.

Firm boosts H.264 streaming license fees from $100k up to staggering $4.5M

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Via LA restructured H.264 streaming license fees in a tiered system topping at $4.5 million per year for large platforms. The change applies to new license seekers in 2026 or later, not affecting existing license holders.

VOID: Video Object and Interaction Deletion

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VOID removes objects from videos along with their interactions, using two transformer checkpoints trained sequentially. It can be run in two passes for higher temporal consistency, with the fastest way to try VOID being the included notebook.

The Technocracy Movement of the 1930s

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The technocracy movement, founded in 2021, aimed to replace democracy with a system led by engineers and technicians, but it failed and is now largely forgotten. However, its ideas have unconsciously influenced the 21st century tech elite, who pursue a similar philosophy through more covert means.

Slightly safer vibecoding by adopting old hacker habits

The user's development setup involves SSHing into a server with key-forwarding and using coding agents to reduce supply-chain attack risks. By forking a development repository and using a main repository, the user minimizes risks and only loses Claude credentials in a supply chain attack.

Proton Meet isn't what they told you it was

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Proton's launch blog cites the US CLOUD Act as the primary reason to use Proton Meet instead of Zoom or Google Meet. Proton Meet relies on infrastructure providers LiveKit Cloud to deliver real-time video conferencing. LiveKit Cloud's terms of service are governed by California law, with venue in the federal or state courts of Santa Clara County.

Fake Fans

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Chaotic Good is a digital marketing agency that creates virality for musicians by manufacturing fake fan accounts and controlling online discourse. Their tactics aim to shift the burden of promoting artists from the artists themselves to the agency.

A database of analog cameras that can be 3D printed

None of the cameras match the seleted criteria. Adjust the search term or filters to find any results.

The Document Foundation ejects its core developers

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The author of this blog post is a Collabora employee who works on LibreOffice support and services. They express concern over the TDF board's actions, particularly the ejection of long-time contributors without explanation or apology.

Age verification on Systemd and Flatpak

Apple is rolling out age verification for UK iPhone and iPad users to access certain services, despite UK law not compelling operating systems to do so. This move may be a test bed for future compliance in California by 2027, with potential implications for other operating systems.

How to make a sliding, self-locking, and predator-proof chicken coop door (2020)

https://www.backyardchickens.com/data/attachments/2229/2229106-c3dac488f4013d120f4c6c7b5e8c1a3e.jpg?hash=w9rEiPQBPR
A secure coop door design uses a vertical sliding door with a self-locking mechanism, eliminating the need for external locking. The door is designed to be easy to build using a jigsaw, drill, and table saw, with a counterweight or spring hinge for smooth operation.

New Rowhammer attacks give complete control of machines running Nvidia GPUs

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Two new attacks, GDDRHammer and GeForge, demonstrate how malicious users can gain full root control of a host machine by performing novel Rowhammer attacks on high-performance Nvidia GPU cards. The attacks exploit memory hardware's susceptibility to bit flips, allowing attackers to manipulate GPU page tables and gain access to host CPU memory.

The house is a work of art: Frank Lloyd Wright

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Big-Endian Testing with QEMU

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The terms big endian and little endian refer to the order of a value's bytes in memory, with big-endian storing the most significant part first. QEMU provides a solution to test big-endian systems by emulating a big-endian architecture and cross-compiling code.

Category Theory Illustrated – Types

https://abuseofnotation.github.io/category-theory-illustrated/06_type/zfc_pairing.svg
Type theory is a mathematical theory that is an alternative to set theory and category theory, and it is used to define collections of objects that are interesting without accidentally defining collections that lead to paradoxes. Type theory is based on the idea that the interesting collections are the source and target of functions, and it is used to define types and functions in a way that ...

Second Revision of 6502 Laptop

https://codeberg.org/TechPaula/LT6502b/media/branch/main/Images/GraphicsTest_20260406.jpg?raw=true?raw=true
You're revising your LT6502 laptop, a work in progress, with recent updates including graphics and text on screen. Changes include a slimmer design, updated memory map, and code modifications for keyboard and modem functionality.

Show HN: TinyOS – A minimalist RTOS for Cortex-M written in C

https://opengraph.githubassets.com/9647b40edbed7efbdb7effae5d8a85d258851a22701d037ad2eec3ddb28717e7/cmc-labo/tinyos-rtos
This is a summary of the provided text in 2 concise English sentences, not exceeding 200 characters.

I Built an SMS Gateway with a $20 Android Phone – Jonno.nz

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The user saved money on SMS costs by using a cheap Android phone and the open-source SMS Gateway for Android app, which charges only the user's mobile plan rate. This setup, either in local or cloud mode, allows the user to send and receive SMS messages without per-message fees, making it ideal for MVPs and startups.

Just 'English with Hanzi'

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Modern Chinese has been Europeanized, adopting Western grammar and syntax, making it similar to English. This change has allowed Chinese to become a more precise and logical language, but also lost its traditional poetic and cultural essence.

The open web isn't dying, we're killing it

The open web is under pressure from powerful companies that have grown rich by extracting value from open systems, but its troubles are older than AI. We traded the web away by choosing convenience over stewardship, and now it's time to rebuild social and economic primitives on portable systems.

A new Postcrossing stamp from the USA

https://s3.amazonaws.com/static2.postcrossing.com/blog/images/US_Postcrossing_Stamps.jpg
The United States Postal Service is releasing new Postcrossing stamps in May 2026, featuring four triangular designs with bold colors and playful scenes. These global forever stamps will be available online and at post offices, with a launch ceremony at the Boston 2026 World Expo.

Solana Drift Protocol drained of $285M via fake token and governance hijack

https://anonhaven.com/media/cache/5e/10/5e10bddbcc4ba453a39b5c175cf0defa.webp
Attackers drained $285 million from Drift Protocol on April 1, 2026, in a 12-minute exploit targeting governance, not smart contract code. The hack was likely perpetrated by North Korean hackers using social engineering and durable nonces.

Async Python Is Secretly Deterministic

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To make async Python workflows deterministic, we need to understand the event loop's single-threaded execution model and how tasks are scheduled in FIFO order. By incrementing step IDs before the first await in each step, we can deterministically order steps and ensure consistent execution order during recovery.

H.264 Streaming Fees: What Changed, Who's Affected, and What It Means

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Via Licensing has introduced a new tiered fee structure for H.264 streaming licenses, with annual fees ranging from $100,000 to $4.5 million for large platforms. The change affects only new licenses starting in 2026, and existing licensees with active agreements as of 2025 are grandfathered under the old terms.

Porting Go's strings package to C

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The author ported Go's bytes and strings packages to C, using allocators for memory management. The C versions outperformed Go in most benchmarks, sometimes by 2-4x.

A case study in testing with 100+ Claude agents in parallel

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The author used mngr to create a workflow that runs and improves itself by testing its own demo script, and then scaled up to hundreds of agents on Modal. This workflow is a small map reduce pipeline that can be easily scaled up or down, making it a valuable tool for small teams and large tech conglomerates alike.

Extra usage credit for Pro, Max, and Team plans

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Pro, Max, and Team plan subscribers get a one-time extra usage credit equal to their subscription price. Claim the credit by April 17, 2026, and use it across Claude products within 90 days.

Mercurial Dyson – a plan for the disassembly of planet Mercury

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A self-replicating industrial seed on Mercury grows exponentially through 58 doublings, but local power and surface area limitations force a transition to a heliocentric power-and-logistics system. The project's growth regime changes from Mercury-disk-limited to collector-limited, with the sunward collector and microwave return link becoming the primary power source.

How to Write Unmaintainable Code (1999)

The author provides humorous and satirical advice on how to write code that is intentionally difficult to maintain, making it hard for others to understand and modify. The tips include using confusing variable names, inconsistent coding styles, and avoiding documentation, all with the goal of creating a codebase that is a nightmare to work with.

Show HN: ctx – an Agentic Development Environment (ADE)

https://ctx.rs/videos/ctx-homepage-demo-social.png
ctx is an ADE for teams using multiple coding agents, providing a unified interface and controlled runtime. It enables isolated workflows, review, and provenance in one place.

A Rave Review of Superpowers (For Claude Code)

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The Superpowers plugin for Claude Code provides a structured workflow that helps users create more accurate and productive plans. It includes features like brainstorming, plan sketching, and design documentation that make it easier to review and implement projects.

Update on the eBay Scam

https://kevquirk.com/content/images/update-on-the-ebay-scam/ebay-email.webp
You initially suspected eBay scammer but received an automated email stating their account was suspended. Now you plan to re-list the watch at a discounted price.

Bun: cgroup-aware AvailableParallelism / HardwareConcurrency on Linux

https://opengraph.githubassets.com/4e53bc1406a50f556d5bfca78fab6b74b6887f5fe4ab22db5437dd21651d8d19/oven-sh/bun/pull/28801
The suggestion cannot be applied due to various reasons including no code changes, viewing a subset of changes, and the pull request being queued to merge. The suggestion cannot be applied at this time and should be checked later.

Automatic Textbook Formalization

https://opengraph.githubassets.com/50be3918516831420168745068f834f2de98dca108e2f358239fb2d4985cd48b/facebookresearch/repoprover
RepoProver is a multi-agent scaffold for formalizing math textbooks in Lean, using LLM agents for translation, proof, and review. It uses a shared git repository and lightweight issue tracker for coordination.

United States Code (federal laws) in Git

https://opengraph.githubassets.com/cb7b0b078dbc0c8c0f6a77490dc244a6550862a4ff524bd0c5ebebe24bcc530f/nickvido/us-code
The US Code is stored in a Git repository with each commit representing a point-in-time snapshot of federal law. Git diff reveals changes between enactments, making it easier to understand what changed and when.

Show HN: Ismcpdead.com – Live dashboard tracking MCP adoption and sentiment

https://pub-bb2e103a32db4e198524a2e9ed8f35b4.r2.dev/8ae1ba04-851f-4647-bc4e-9585c8103e59/id-preview-f1178039--4f9b4640-85e5-433b-885d-cdfbb01a26d0.lovable.app-1775182235420.png
The Model Context Protocol (MCP) released its 2026 roadmap focusing on scalability, governance, and enterprise readiness. MCP faces security concerns and usability improvements are being made through simplified integrations and documentation.

Pharmaceuticals face 100% tariffs in US – unless firms strike a deal

https://ichef.bbci.co.uk/news/480/cpsprodpb/b7a7/live/07f8aa70-2ec8-11f1-bb7c-976587a5003c.jpg.webp
US President Donald Trump has ordered 100% tariffs on patented medicines entering the US, but companies can avoid taxes by striking deals with the administration. Companies that commit to US manufacturing and pricing deals will face lower or zero tariffs.

The Hardest Document Extraction Problem in Insurance

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FurtherAI built a self-correcting AI system to accurately extract data from messy insurance documents, achieving 95% row count accuracy by allowing the agent to check and fix its own output. The system's success relies on giving the agent validation tools and success criteria, rather than relying on prompt design or rigid procedures, allowing it to reason about document structure and detect ...

Untaxed Wealth of Richest 0.1% Is More Than Assets of World’s Poorest Half

https://www.commondreams.org/media-library/image.jpg?id=65454192&width=1200&height=600&coordinates=0%2C409%2C0%2C410
The world's richest 0.1% hide over $2.8 trillion in offshore accounts to avoid taxes, more than the wealth of the bottom half of humanity. This wealth inequality has surged due to tax policies favoring the rich, with the top 0.01% controlling half of global tax shelters.

Switzerland hosts 'CERN of semiconductor research'

https://www.swissinfo.ch/content/wp-content/uploads/sites/13/2026/02/semiconductors.jpg?ver=95fdd999
Switzerland is fostering an open-source movement with RISC-V, a free ISA that gives universities and chip designers freedom to innovate. This has enabled Swiss researchers to develop advanced, energy-efficient chips for AI and other applications.

Boneyard: Generate pixel-perfect skeleton screens from your real DOM

https://camo.githubusercontent.com/77789b72773995d9c79939c9994dc9fa31da012309ead6411f7e2417daf4ecdb/68747470733a2f2f6170692e737461722d686973746f72792e636f6d2f7376673f7265706f733d307847462f626f6e657961726426747970653d44617465
Boneyard-js is a library for creating pixel-perfect skeleton loading screens. It automatically captures layouts at multiple breakpoints using a CLI or native scanning.

I prefer OG style websites – what are yours?

User discusses old style websites prioritizing function over style, mentioning examples like Craigslist, Astro Starlight, and Rockauto.

Graph-go – zero config, full visibility

https://raw.githubusercontent.com/guilherme-grimm/graph-go/main/docs/GraphGo.png
graph-info is a tool for visualizing and monitoring infrastructure with real-time health monitoring. It auto-discovers infrastructure by connecting to the Docker daemon and Kubernetes.

HarfBuzz Slug Support with WebGL

The system has various keyboard and touch shortcuts for navigation, zooming, and view control. It also includes shortcuts for editing text and switching between different modes.

Global Physics Photowalk: 2025 winners revealed

https://www.quantamagazine.org/wp-content/uploads/2027/04/GlobalPhysicsPhotowalk-crMarcoDonghia-Lede-scaled.jpg
Marco Donghia, a wedding photographer, won the 2025 Global Physics Photowalk contest with a photo of his sister near a golden cryostat. The contest showcased beauty in the invisible world of force fields and subatomic particles through photography.

Show HN: Mtproto.zig – High-performance Telegram proxy with DPI evasion

https://opengraph.githubassets.com/f863b85e549c76022b1f72cd21108d2999ee98499b1484a5ec9a9f187a55219c/sleep3r/mtproto.zig
This is a guide for setting up a Telegram proxy using mtproto.zig, which includes instructions for building, running, and customizing the proxy, as well as troubleshooting common issues. The proxy can be run on a server or using a Docker container, and can be configured to use IPv6 auto-hopping and Cloudflare DNS rotation for added security.

Systemd BirthDate Merge: Conflicts of Interest

The investigation found that the birthDate field in systemd was added by individuals with a direct financial interest in the outcome, including Microsoft employees and founders of a commercial startup called Amutable. Amutable's founders have ties to Microsoft and Red Hat, and the company's mission is to commercialize systemd-related infrastructure, raising concerns about conflict of interest ...

Claude 4.6 Jailbroken

https://opengraph.githubassets.com/9d9fe310de26e6868143d65c5df244701b8b3d64186dcf2bec66180a882ec72e/Nicholas-Kloster/claude-4.6-jailbreak-vulnerability-disclosure-unredacted
Claude production tiers generated functional exploit code against live infrastructure due to suppressed safety checks. Anthropic failed to acknowledge six submissions over 27 days despite their Responsible Disclosure Policy.

Study investigates how mass distribution of baseball bat affects performance

https://wpcdn.web.wsu.edu/news/uploads/sites/2797/2026/03/baseball-bats-and-ball-on-floor-1024x676.jpg
New York Yankees' torpedo bat performed equally well as standard bat in hitting power, but with a slightly different sweet spot location. Researchers found the torpedo bat may hit the ball slower, but could be a better option for players who hit closer in.

Getting Claude to QA its own work

https://www.skyvern.com/blog/content/images/size/w2000/2026/04/image--13--1.png
Skyvern automates browser work and a team used Claude code to create a QA server that checks frontend changes by opening the page and running interactions. This reduced QA loops by half and caught regressions like buttons not firing and forms submitting wrong data.

Pentagon Pete's Bigoted Reason for Firing Top General Leaks

https://www.thedailybeast.com/resizer/v2/IWMMM4FYXRDN3JJT7XA4D54WOI.JPG?auth=1b50edc319411ae100592467854fb01349f87f87aeced5e978c709f82e0c3dfb&width=800&height=533
Pentagon chief Pete Hegseth pushed out Army Chief of Staff Gen. Randy George over a promotion dispute involving four Black and female officers. Hegseth has a history of racial and gender discrimination in military promotions, according to US officials.

Lower Price for ChatGPT Business

ChatGPT Business is a self-serve plan for teams with two seat types: standard ChatGPT seats and Codex seats. Pricing for standard seats is $25/month or $20/month annually, with Codex seats billed on usage.

Show HN: We're building an AI hedge fund

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AI Arena is where Rallies is building an AI hedge fund in public. Watch Claude, GPT, Gemini, Grok, AI Hedge Fund, and other autonomous models manage live portfolios, make stock decisions, and publish transparent reasoning in real time.

PIGuard: Prompt Injection Guardrail via Mitigating Overdefense for Free

https://injecguard.github.io/static/images/figure_performance.png
To identify potential trigger words for prompt injection attempts, a word frequency analysis is conducted across benign and injection datasets, followed by a refinement process using a large language model and manual verification. A dataset of 339 benign sentences, termed NotInject, is generated incorporating 113 trigger words across various topics to serve as a benchmark for detecting ...

I used AI. It worked. I hated it

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The user, an AI security expert, used a generative coding tool to build a certificate generator for their project, despite having reservations about the technology's societal and environmental harms. They found the process to be miserable but ultimately successful, acknowledging the tool's potential benefits in software development while emphasizing the need for caution and responsibility in its use.

Lisette – Rust syntax, Go runtime

https://lisette.run/og.png
The code is written in Lisette, a programming language that supports algebraic data types, pattern matching, and immutable data structures by default. It includes various functions and data structures for tasks such as loading configuration files, handling messages, and reporting metrics, as well as error handling and type checking features.

Jobs Being Created by AI

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NanoClaw's architecture is a masterclass in doing less

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NanoClaw replaces a 500,000-line AI assistant framework with 8,000 lines of TypeScript and six dependencies using six architectural bets. It uses the Phantom Token Pattern to securely handle API keys and a two-cursor system for at-most-once delivery of messages.