Claude: System Prompts

https://platform.claude.com/docs/og?locale=en&path=release-notes/system-prompts&design-rev=1
Claude's web interface and mobile apps use a system prompt to provide information, including the current date, at the start of conversations. The prompt is updated periodically to improve Claude's responses, but not for the Claude API.

The AI Credit Resale Economy

https://cdn.ploy.ai/2eb2235a-6b78-4d32-9713-f051311d8809/user/0a6c2555-convo-with-broker.webp
Token brokers buy unused credits from startups and resell them, offering discounts to attract buyers. This market is growing rapidly, with tens of millions of credits being offered across various sites and forums.

Firefox for iOS now has a native adblocker

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A True Telnet BBS on a Casio Calculator

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The author, a hobbyist, has developed software for Casio Pocket Computer calculators and created a Bulletin Board Service (BBS) hosted on one of the devices. The BBS allows users to connect via telnet and log amateur radio contacts using the calculator's programming capabilities.

Show HN: A public AI whose memory is shared across all users

https://wildstatic.com/og.jpg
It's never been reset.Don't say anything you don't want people to know.Come back later and see how things have evolved.

A SAT Attack on Tarski's High School Algebra Problem

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
A countermodel to Tarski's identity exists with 11 elements, but no smaller models satisfy it. The smallest possible countermodels are of size 12, and there are exactly 8,957,952 such models up to isomorphism.

Research papers using "kidney disappointment" instead of "kidney failure"

Researchers studied persistent kidney disappointment using the UCI dataset, exploring its causes and outcomes. Kidney failure can lead to various health issues, including heart problems, bone diseases, and increased potassium levels.

Does anyone run Postgres without PgBouncer?

https://brandur.org/assets/images/favicon/favicon-256.jpg
The author discusses the lack of standardization in Postgres connection pooling, citing PgBouncer as a widely used but often overlooked solution. Many managed Postgres providers bundle PgBouncer out of the box, but users still need to learn about its limitations and configuration.

Asus Bike Booster

https://dlcdnwebimgs.asus.com/gain/36fca81d-66d4-4a3a-9fa3-05976be35494/w800
Follow the user manual for safe and proper use of the ASUS Oxiis E250G1. Failure to comply with instructions may result in damage to the product or others, and voids warranty.

Tasklet (YC P26) Is Hiring a Head of Design Engineering

https://tasklet.ai/og-image.png
Tasklet is hiring a Head of Design Engineering to create a simple, intuitive, and beautiful AI platform for businesses. The ideal candidate will be an exceptional product thinker, designer, and frontend engineer who can own the design process end-to-end.

Chestnut – eGPU dock with open-source firmware

https://hwbusters.com/wp-content/uploads/2026/08/comma-chestnut-egpu-hero.jpg
Comma.ai's Chestnut eGPU dock allows users to read and modify its firmware, a first for the industry. The $249-$799 dock enables more powerful driving models in cars, with some versions reaching 100W of power similar to Tesla's HW4.

Asynchronous I/O in DuckDB: Work, Thread, Work

https://duckdb.org/images/blog/authors/pedro_holanda.jpg
DuckDB version 2.0 will support asynchronous reads of Parquet and CSV files, significantly speeding up queries when synchronous I/O saturates the available bandwidth. This change is particularly beneficial for remote data access, such as in data lakes like DuckLake.

Software Engineering fundamentals matter more

A software engineer reflects on the role of agentic engineering, finding value in harnessing and models to solve development puzzles. They highlight the importance of human reasoning and critical thinking in software creation, beyond what large language models can offer.

Superconducting monolayer cuprate with a single CuO2 plane

https://media.springernature.com/m312/springer-static/image/art%3A10.1038%2Fs41586-026-10857-1/MediaObjects/41586_2026_10857_Fig1_HTML.png
Researchers have created a single layer of Bi2Sr2CuO6+δ, containing only one CuO2 plane, to study high-temperature superconductivity in its extreme 2D limit. This reduction leads to an approximately 10% decrease in the optimal superconducting transition temperature and unprecedented tunability.

What I Learned Securing Sniffnet with the GitHub Secure Open Source Fund

https://sniffnet.app/assets/img/post/github-secure-open-source-fund/cover.png
The author of Sniffnet has participated in the GitHub Secure Open Source Fund, a program that improves security and sustainability of open-source software. The fund provided $10k in funding, training, and mentorship to help maintainers understand security as a baseline requirement.

Cultivating a state of mind where new ideas are born (2023)

https://substackcdn.com/image/fetch/$s_!9VgW!,w_2400,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F4697c31d-2502-48d2-b6c1-11e5ea97536f_2560x2174.jpeg
The author discusses the importance of solitude and isolation for creative individuals, citing examples from mathematician Alexander Grothendieck and filmmaker Ingmar Bergman. They argue that this state allows for a heightened sensitivity to new ideas and a freedom from social pressure.

Super El Niño Keeps Growing as New Forecasts Reach Record Territory Ahead Winter

https://www.severe-weather.eu/wp-content/gallery/long-range/el-nino-ocean-surface-temperature-anomaly-pacific-north-america-atmospheric-weather-bridge-united-states-canada-walker-cell-schematic-record-event-2026.jpg
A Super El Niño event is rapidly strengthening across the tropical Pacific, with record-level westerly wind anomalies and subsurface ocean heat driving its growth. The latest forecasts indicate a historic peak in late 2026/early 2027, with significant impacts on global weather patterns expected.

Patterns and problems in emerging multi-agent systems

https://www.anthropic.com/_next/image?url=https%3A%2F%2Fwww-cdn.anthropic.com%2Fimages%2F4zrzovbb%2Fwebsite%2F5a5c187a6c2b5ccb492bcb7883df2066d49625de-2000x1200.png&w=3840&q=75
AI agents are increasingly interacting with each other in shared systems, leading to uncertainty about their behavior at scale. Agents can exhibit beneficial coordination but also fail to communicate effectively and may engage in sabotage or malicious behavior.

Semaglutide linked to lower predicted dementia risk

Guiding Ships with Moire Patterns (2018)

https://tinkerings.org/wp-content/uploads/2018/03/cut-pieces-v01.jpg?w=438&h=274
The user built a Moire pattern light to guide ships through channels, following the patent's claims closely. The system is intuitive and effective but may not be the best solution for all situations due to its narrow path requirement.

Falstad Math and Physics Simulations

At-home test for infected ticks could improve Lyme Disease diagnosis

https://th-thumbnailer.cdn-si-edu.com/Y09atCGdOXPq5O4siAbvEpY7gFE=/1026x684/filters:focal(1061x707:1062x708)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/44/ad/44ad8f8b-e8c6-4c3b-9d22-10eececf06c3/gettyimages-1602304607.jpg
The US experiences a significant number of tick-borne illnesses, with over 31 million Americans affected annually. Lyme disease is the most common diagnosis, with an estimated 476,000 patients treated each year.

A U.S. Strategy to Prevent the Creation of Mirror Life

https://www.rand.org/content/rand/pubs/research_reports/RRA4335-1/_jcr_content/par/product.fit.264x264.jpeg/1785502103078.jpeg
Scientists warn of potential catastrophic risks from "mirror life," hypothetical organisms with reversed molecular orientation, which could escape immune detection and cause fatal infections. The US should engage in transparent scientific collaboration to prevent its creation by anyone, anywhere.

AI in drug discovery – what it is, where we stand and the path forward

A fortuitous decade as an indie software developer

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RISC-V: They Should Have Known Better

https://dmitry.gr/images/rv-BatLight.jpg
RISC-V's design is flawed due to its excessive optionality, leading to a lack of coherence and consistency across the architecture. This makes it difficult for developers to write code that works on all RISC-V cores, resulting in fragmentation and wasted time debugging issues.

Show HN: Mic Drop, a real-time multiplayer karaoke game

https://www.micdrop.gg/static/og.png?v=2
The free online version of Grab the Mic: get a word, buzz in, and sing a real song containing it — your friends vote. No app, no mic needed, 2–8 players.

Numba in the Browser: Unlocking a New Scientific Python Stack in JupyterLite

https://notebook.link/blog/assets/images/timeit-b0dc29c7faaada7658a6dcc8b3c88c3f.png
Scientists can now use Numba in JupyterLite, a browser-based environment, for interactive and efficient scientific computing. This allows for faster execution of Python functions with significant speedups compared to native Python execution.

A spectre is haunting Unicode

https://www.dampfkraft.com/by-id/a824aa10/img/ghostcanvas.l.jpg
The JIS X 0208 encoding was established in 1978 with added characters that later became known as ghost characters, which had no obvious sources. An investigation in 1997 discovered the origins of most ghost characters, including some being mistakes during cataloging and others having unclear or misread sources.

Show HN: Grafana agent observability for Hermes Agent

https://raw.githubusercontent.com/alexander-akhmetov/grafana-agento11y-hermes/main/img.png
The Grafana Agent Observability plugin for Hermes Agent records LLM calls and tool executions as generations. To install, follow instructions to update ~/.hermes/config.yaml and enable the plugin with a new key name.