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PolicyLayer enforces spending limits on AI agent wallets without custodying private keys.

The problem: AI agents are moving into production with irreversible financial capabilities, but every agent is one bug or prompt injection away from draining a wallet. Traditional options are bad—shared seed phrases (compliance nightmare), custodial wallets (counterparty risk), manual approval (defeats automation), prompt-level limits (easily jailbroken).

How it works: - Drop-in wrapper for existing wallet SDKs (Ethers, Viem, Coinbase CDP, Privy, Solana) - Two-gate enforcement: Gate 1 validates against policies, Gate 2 detects tampering via SHA-256 fingerprinting - Keys never leave your infrastructure—we only see transaction metadata - Fail-closed: if anything fails, transactions stop (not continue) - Policies configured in dashboard: daily caps, per-tx limits, recipient whitelists

Also supports X402 (HTTP 402 payment protocol) for agents paying for APIs—per-endpoint limits, auto-discovery of new paid endpoints, duplicate payment prevention, and circuit breakers.

SDK is open source.

Feedback welcome — what would make this more useful for your agents?

This article discusses how to create a small telephone exchange using an analog telephone adapter, allowing users to make and receive calls through a private network without relying on a traditional telephone service provider.

The article discusses how Canada's decision to allow the import of cheap Chinese electric vehicles (EVs) has made General Motors CEO Mary Barra nervous, as it poses a competitive threat to North American automakers and could impact jobs and investment in the region.

Shor Labs is a biotechnology company that develops novel treatments for rare and genetic diseases. The company utilizes cutting-edge gene therapy and gene editing technologies to create innovative solutions for unmet medical needs.

The article discusses the importance of execution over just having a great idea, emphasizing that the real value lies in the ability to turn an idea into a successful product or business, and that focusing too much on the idea itself is often a waste of time and energy.

The article proposes a novel deep learning-based framework for efficient video compression, achieving significant improvements in compression ratio and visual quality compared to traditional video codecs. The method leverages a generative adversarial network and a transformer-based architecture to capture spatial-temporal dependencies in video data.

The article introduces ESP-IoT-Core, an open-source framework for building IoT applications on Espressif's ESP32 and ESP8266 microcontrollers. The framework simplifies the development process by providing a modular architecture, comprehensive device management, and seamless integration with various cloud platforms.

The article discusses the benefits of reading books and how it can improve cognitive abilities, empathy, and overall well-being. It encourages readers to incorporate more reading into their daily lives and provides tips for building a reading habit.

I’ve never been able to maintain enough focus on a timer. The temptation to get distracted is always strong—and since it’s easy to ignore the timer, I often did.

After failing to follow the Pomodoro method, I’d feel irritated, frustrated, and blame myself. Soon enough, the routine would fall apart, and I’d go back to working in my usual way—without boundaries or timers.

Then I had an epiphany: focusing on the timer forces you into a battle with yourself. And since it’s hard to fight your own subconscious micro-reactions and habits, you end up frustrated. Sticking rigidly to a timer is the wrong goal. The real goal should be taking regular breaks—focus will follow naturally.

To test this idea, I created "Black Screen for Windows" — an app that forcibly blacks out my screens for a few minutes at regular intervals. Usually, that’s 3–5 minutes every 20–30 minutes.

This practice of enforced, regular breaks has not only improved my well-being but also dramatically boosted my productivity—all without the frustration. My ability to focus improved, too, with a small hack: I start with a 30-minute interval, then gradually shorten it until I find a span of time in which I can maintain clean, distraction-free focus.

I find this works better for me than the classic tier-based Pomodoro.

What do you think?

Qt Creator 19 beta has been released, featuring improvements to the user interface, enhanced support for Qml and C++, and new tools for efficient software development.

The article explores how algebraic geometry can be used to understand the shape of the universe, revealing insights into its large-scale structure and the distribution of galaxies. It highlights how this mathematical approach provides new perspectives on the fundamental nature of the cosmos.

The article explores the mythical creature of the unicorn, examining its historical origins, cultural significance, and enduring popularity. It discusses the various interpretations and representations of unicorns throughout history and how they have become a beloved symbol of imagination and wonder.

The article discusses the development of a new, faster algorithm for solving the Minimum Weighted Matching (MWM) problem, a fundamental problem in computer science. The algorithm, called EMWM, is shown to significantly outperform existing methods in terms of speed and efficiency.

The article discusses the NFCShare Android trojan, which steals NFC card data by tricking users into installing a malicious app. The trojan is capable of intercepting and exfiltrating sensitive data from NFC-enabled cards, posing a significant security risk to users.

The article explores how network theory can help solve a decades-old problem in physics related to the behavior of waves, suggesting that understanding the interconnected relationships within complex systems may provide insights into long-standing scientific challenges.

Hey HN! I'm one of the folks behind Documenso (open-source document signing).

We spent years combining pdf-lib with a custom Rust signing library. It worked, but real-world PDFs kept finding edge cases.

Instead of waiting for a better library to appear, we wrote our own.

LibPDF:

- Lenient parsing with brute-force recovery (inspired by Apache PDFBox) - Digital signatures with no native bindings and full PAdES support - Incremental saves that preserve existing signatures - Encryption (AES-256, AES-128, RC4) - TTF/OTF font subsetting (ported from PDFBox's fontbox)

API inspired by pdf-lib.

Still in beta, but we use it in production at Documenso already. You might hit a few bugs that we haven't yet, if you do let us know!

https://documenso.com/blog/introducing-libpdf-the-pdf-librar... https://github.com/libpdf-js/core https://libpdf.dev

The article discusses the potential impact of AI and automation on job displacement by 2025, suggesting that up to 85 million jobs could be displaced globally, with the fast food, retail, and administrative sectors being the most affected. It also explores potential solutions, such as upskilling and reskilling workers, to mitigate the effects of this technological shift.

Anders Hejlsberg, the inventor of TypeScript, discusses his views on the current state of AI, stating that it is primarily a 'big regurgitator of stuff someone has done' and highlighting the need for more fundamental research and progress in the field.

The article provides practical tips for using AI in coding, including leveraging pre-trained models, automating repetitive tasks, and using AI-powered tools for code generation, debugging, and optimization.

SafeQL is an open-source Python library that provides a secure and user-friendly way to interact with SQL databases, focusing on protecting against SQL injection attacks and simplifying database queries.

Hi HN,

I documented something I kept running into while debugging my own reactions under pressure.

There appears to be a tiny runtime gap between incoming signal (trigger) and outgoing action.

If that gap collapses, behavior executes automatically. If it stays open even briefly, explicit choice becomes available.

I formalized it as a minimal behavioral control primitive:

Origin → Signal → OP Gap → Zero Point → Operator Point → Choice → Action → Return

No beliefs, no mindset, no therapy framing. Just a control discontinuity observable in real time.

OP Gap itself doesn’t decide anything. It simply exposes a control surface. Without it: reflex. With it: authored action.

The model includes explicit failure modes: - gap collapse (autopilot) - operator unavailable - missing return (residual accumulation)

And a recovery mechanism (Return Frame).

I wrote a short technical book describing the closed loop.

I’m not trying to sell anything here — I’m interested in pressure-testing the architecture.

If you think this already exists under another name, or see structural flaws, I’d genuinely appreciate feedback.

Thanks.

The article discusses how the Zig programming language can be used to address supply chain issues by improving the reliability and efficiency of software systems that manage complex logistics. It highlights Zig's ability to provide low-level control, performance, and safety guarantees, making it a potential solution for addressing the challenges faced in the MXN supply chain.

The article discusses the importance of a 'Don't Contact Us' page on a company's website, highlighting how it can effectively manage user expectations and reduce unnecessary inquiries, ultimately leading to a more positive user experience.

The article discusses a critical vulnerability in the Moltbot Discord bot, which allowed for remote code execution with a single click. The vulnerability was discovered and responsibly disclosed, leading to a patch being released to address the security issue.

The article discusses Cloudflare's Internet Review, a report that analyzes global internet traffic patterns and trends over a 28-day period. It provides insights into internet usage, network performance, and the impact of major events or disruptions on internet connectivity worldwide.

LexRay.io offers a platform for businesses to discover, hire, and manage freelance professionals across various skill sets. The website aims to streamline the freelancing process by providing tools for job posting, candidate vetting, and project management.

Mistral Vibe 2.0 is the latest version of the company's AI-powered music player, featuring improved sound quality, expanded music library, and new personalization options to enhance the listening experience.