DEV Community • 2026-04-21 15:49

PromptOS - A desktop AI agent that actually controls your machine — not just a chatbot

Prompt OS is an open-source Python desktop app that gives any LLM direct access to your local machine through a real agentic loop. Capabilities It doesn't just answer questions—it takes action. Prompt OS chains tools together until the task is actually done by: System Control: Runs shell commands and executes Python scripts. Web & Browser: Controls your browser and searches ...

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22 BRIDGE:BREAK Flaws Expose 20,000 Lantronix and Silex Serial-to-IP Converters
The Hacker News • 2026-04-21 15:46

22 BRIDGE:BREAK Flaws Expose 20,000 Lantronix and Silex Serial-to-IP Converters

Cybersecurity researchers have identified 22 new vulnerabilities in popular models of serial-to-IP converters from Lantronix and Silex that could be exploited to hijack susceptible devices and tamper with data exchanged by them. The vulnerabilities have been collectively codenamed BRIDGE:BREAK by Forescout Research Vedere Labs, which identified nearly 20,000 Serial-to-Ethernet converters exposed

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DEV Community • 2026-04-21 15:43

Build a No-Code AI Agent in 30 Minutes Using n8n + Claude (Full Walkthrough)

Monitor a Slack channel, summarise threads, post daily digests, all without writing a single line of code. I want to tell you about a Friday afternoon problem. Our team's main Slack channel had become unmanageable. Not because people were saying too much, because they were saying the right things at the wrong times. Someone would share a critical decision at 9am. Someone else would ask a questio...

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I didn't set out to build a sustainability tool...
DEV Community • 2026-04-21 15:43

I didn't set out to build a sustainability tool...

...but only seven weeks in, we've accidentally saved enough electricity to power roughly 65 American households for a year, and enough avoided CO₂ to take 64 gasoline cars off the road. I set out to fix a dumb problem: LLM coding agents load entire files into their context window to answer questions about single functions. That's expensive in dollars, it's slow, and it pollutes the context with j...

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Migrating vector embeddings in production without downtime
DEV Community • 2026-04-21 15:41

Migrating vector embeddings in production without downtime

In the fast-moving world of AI, models evolve rapidly. What was state-of-the-art six months ago is now being surpassed by newer models. For a RAG system, this presents a significant challenge: vector embeddings are tied to the specific model that generated them. If you want to upgrade your model, you can’t just start using the new one. Existing vectors in your database are incompatible with queri...

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HackerNoon • 2026-04-21 15:41

25 Things the Claude Code Leak Reveals About Anthropic’s AI Agents

A temporary npm release exposed Claude Code’s internals, revealing key design decisions around memory, orchestration, tooling, and safety.

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DEV Community • 2026-04-21 15:41

The AI Coding Comprehension Gap: Why Faster Isn't Always Better

AI coding agents have made developers dramatically faster. They've also made something else: a growing gap between the code that exists in a codebase and the code that developers actually understand. This post is about that gap — what causes it, why it matters, and what can actually be done about it. The Speed vs. Comprehension Tradeoff Here's a scenario that's become common: Dev...

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Newest questions tagged javascript - Stack Overflow • 2026-04-21 15:40

Style property gets re-formatted when setting on HTML dom element

I am trying to set the top and left style properties on a div to position it at a screen location, but it's not working. No matter how I define the properties, they somehow get re-formatted to a completely different number. const y = Math.round(geom.centroid.y).toString() + "px" const x = Math.round(geom.centroid.x).toString() + "px" console.log("screen point = ", x, ...

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DEV Community • 2026-04-21 15:40

Understanding Recursion in JavaScript — Explained in Simple Words

If you are learning DSA, recursion can feel scary at first. When I started learning it, I also felt like: “Why is a function calling itself?” “How do I know when it will stop?” “Why does this look so confusing?” But the truth is: Recursion is not hard because of the logic. It feels hard because we try to understand everything at once. So in this post, let’s not do that. Let’s understand rec...

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DEV Community • 2026-04-21 15:39

Windows + V is too clunky, so I built a permanent Sidebar Clipboard Manager. Launching today!

If you’re like me and find the standard Windows clipboard history frustrating because it disappears every time you click away, I built something for us. My new tool, Clip-bored Manager, is a lightweight Windows utility that pins your clipboard history to a sidebar. It’s built for people who need to see their last 100 clips at a glance while they work. Why it’s different: It doesn't hide in the ...

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Hacker News • 2026-04-21 15:39

Show HN: Runner – A Better Claude Cowork

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DEV Community • 2026-04-21 15:38

From Search Chaos to Retrieval Bliss: How I Fixed My Knowledge Management System's Core Problem

From Search Chaos to Retrieval Bliss: How I Fixed My Knowledge Management System's Core Problem Honestly, I thought I had it all figured out. After 1,847 hours of development and 46 Dev.to articles about my Papers knowledge management system, I was sitting here staring at the brutal reality: my "advanced" system was only being used 84 times out of 2,847 saved articles. That's a 2.9% eff...

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Codrops • 2026-04-21 15:37

False Earth: From WebGL Limits to a WebGPU-Driven World

A deep dive into building an infinite procedural landscape using WebGPU and Three.js, where compute shaders and indirect drawing bring millions of interactive grass blades to life.

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HackerNoon • 2026-04-21 15:36

Break the Loop, Part 2: From Data Structures to Computational Control

In this part, we transition from data structures to the "physics" of functions. We'll cover why currying is the default, how tail recursion saves your memory, and how to build a Monad from scratch to handle empty results gracefully.

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DEV Community • 2026-04-21 15:35

Kiwi-chan's Persistent Placement Problems & Exploration Loops!

Okay, folks, buckle up. It's been a long four hours with Kiwi-chan, and honestly, it feels like we're stuck in a very polite, very persistent loop. The core issue? Placing crafting tables. Despite multiple code fixes (thanks, Qwen!), Kiwi-chan keeps failing to get the blockUpdate event after attempting placement. The logs are filled with "Event blockUpdate did not fire within timeout" errors. It's...

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DEV Community • 2026-04-21 15:35

From Zero to Hero: Building a Spatial Memory API That Actually Survives Real-World Testing

From Zero to Hero: Building a Spatial Memory API That Actually Survives Real-World Testing Honestly, when I started building spatial-memory, I thought I was creating the next big thing in AR. I mean, who wouldn't want to pin multimedia memories to real-world locations, right? The idea sounded straight out of a sci-fi movie - walking down the street and suddenly seeing photos pop up exac...

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DEV Community • 2026-04-21 15:34

How to Diagnose Intermittent Network Failures with Packet Capture

At 2:13 a.m., the NOC dashboard still looked healthy. CPU on the core switches was normal. Interface utilization was below 40%. SNMP polling showed no down links. The application team insisted their new deployment was fine. Yet users in two branch offices kept reporting the same maddening symptom: the ERP web app would load, spin for 20 to 40 seconds, and then fail with a timeout. Five minutes la...

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Google Developers Blog • 2026-04-21 15:33

Production-Ready AI Agents: 5 Lessons from Refactoring a Monolith

The blog post outlines the transition of a brittle sales research prototype into a robust production agent using Google’s Agent Development Kit (ADK). By replacing monolithic scripts with orchestrated sub-agents and structured Pydantic outputs, the developers eliminated silent failures and fragile parsing. Additionally, the post highlights the necessity of dynamic RAG pipelines and OpenTelemetry o...

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DEV Community • 2026-04-21 15:31

Why I'm Giving Away 8 Next.js Templates for Free (And What I Want in Return)

Most indie product launches start with a price tag and hope. Mine started with a price tag, a catalog of 8 production-ready Next.js templates, and exactly zero sales. So I changed the plan. For 4 weeks — through May 19, 2026 — every Craftly template is free. Not discounted. Free. Pay-what-you-want on Gumroad with a $0 minimum. Here's why, what's inside, and what I actually want in exchange. ...

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DEV Community • 2026-04-21 15:30

Vercel Breached via Context AI OAuth Supply Chain Attack: A Post‑Mortem for AI Engineering Teams

Originally published on CoreProse KB-incidents An over‑privileged Context AI OAuth app quietly siphons Vercel environment variables, exposing customer credentials through a compromised AI integration. This is a realistic convergence of AI supply chain attacks, insecure agent frameworks, and brittle MLOps controls already seen in the wild.[1][9][12] As large language models become more agentic, ...

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