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DEV Community · Technology

I Ran 170 Agent Goals for $0.49. The Field Test Found 10 Issues That Unit Tests Never Would.

This is article 4 in a series about building PlannerCritic, an open-source engine where one LLM writes a plan and a second LLM reviews it. Article 1 covers the 157-goal v0.1.0 field test. Article 2 is about the critic severity bug. Article 3 is about the planner capability gap. This one is a practi...

Debashish Ghosal 2 days ago

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DEV Community · Technology

What Changed in AI in the Last 90 Days (Quick Round-up)

The shifts that actually matter for builders - late May to mid-August 2026 The last three months did not produce a single "GPT-5 moment." There was no single release that reset the conversation the way earlier step-changes once did. Instead, the ground moved in several places at once: a wave of fro...

Viv Chaudhary 2 days ago

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DEV Community · Technology

How I Enforced a Privacy Rule, Commented It, Yet Still Shipped a Data Leak – Lessons Learned

AI-Powered Privacy Policy Generators LLM‑driven privacy policy generators have moved from experimental prototypes to production‑grade services in 2026, offering on‑demand, jurisdiction‑aware drafts that can be directly embedded into compliance pipelines. Tools such as PrivacyGPT and Poli...

Tech Pulse 2 days ago

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DEV Community · Technology

The Evolution of Web Forms — Part 3

The Evolution of Web Forms — Part 3: React Hook Form, Validation Libraries, and Zod In Part 2, we learned that React solved the problem of manually updating the DOM. Instead of writing: emailError.textContent = "Email already exists"; emailInput.setAttribute( "aria-invalid", "t...

Karthik Reddy 2 days ago

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DEV Community · Technology

Your canvas.toBlob might be silently handing you a PNG

A user told me the .webp files my tool produced wouldn't open on their desktop. I opened one in a hex editor. First four bytes: 89 50 4E 47. It was a PNG. With a .webp extension. The encoder wasn't broken. I had simply never checked whether the browser actually did what I asked. The spec s...

Lank_M 2 days ago

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DEV Community · Technology

sentinel-scan-cli vs Cisco mcp-scanner vs Snyk Agent Scan: comparing open-source MCP security scanners

If you're wiring MCP servers into an agent and want to check them for prompt injection, tool poisoning, or supply-chain risk before you trust them, there are now a handful of open-source options. This is a factual, no-benchmarks comparison of the three I could actually find and read the docs for: ou...

Ventrova 2 days ago

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DEV Community · Technology

How Particle Effects Improve Game Feel in HTML5 Games

A game can be mechanically correct and still feel flat. The button works. The enemy loses health. The coin counter increases. The level completes. Everything technically functions, but the player's actions do not seem to have much weight. Particle effects are one of the cheapest ways to fix th...

Hiroshi TK 2 days ago

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DEV Community · Technology

The Evolution of Web Forms —Part-1

The Evolution of Web Forms Part-1 — From Plain HTML to AJAX Modern React forms can feel unnecessarily complicated when you first encounter tools such as React Hook Form, Zod, resolvers, controlled inputs, refs, formState, and server-error handling. Why do we need all of that? Why not si...

Karthik Reddy 2 days ago

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DEV Community · Technology

Why my biggest embarrassment was also one of my greatest learning experiences in Programming!

This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry. The background This happened almost twenty years ago, in the year 2006, back in my undergraduate days, when I was still studying CSE - I participated in my first and only International Collegiate Programmin...

Fayaz 2 days ago

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DEV Community · Technology

DeepSeek Harness: What Happens When the Agent Runtime Becomes the Product

How an "everything is a plugin" architecture reframes what an AI agent actually is — and what it teaches builders of any agent stack. 1. The Agent Is More Than the Model There's a persistent shorthand in agent engineering: take a capable LLM, give it a system prompt and a handful of tool...

Pramoda Sahu 2 days ago

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DEV Community · Technology

I measured what 12 ATS APIs actually return, across 1.5M job postings

BambooHR's public job endpoint has an isRemote field. Across 50,616 postings from 9,711 live BambooHR boards, not one had it set. Not "most were blank". Not one. If you write a client that trusts that field, you will conclude that no company using BambooHR is hiring remotely, and you will be wrong...

HwangByeongSeon 2 days ago

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DEV Community · Technology

Node.js interview deep dive: what they are really testing

Almost every senior Node question is the same question wearing a different hat: do you understand that there is one thread doing your work, and do you know what happens when you block it. Node interviews look varied and are not. Streams, timers, clustering, memory, async error handling: pull on any...

Martin 2 days ago

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DEV Community · Technology

A FinOps MCP Server: What Your AI Assistant Can Ask About Your Cloud Bill, and What It Can Never Change

Quick Answer (TL;DR) An MCP (Model Context Protocol) server for FinOps gives your AI assistant (Claude, Cursor, and other MCP clients) tools to query real cloud cost data, so "what's costing us money this month" gets answered from the bill instead of from the model's imagination. The desi...

Muskan _zop 2 days ago

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DEV Community · Technology

Hey DEV! I'm Stefan — TYPO3 dev, and I just launched a page of free browser tools

Hey, I'm Stefan I'm a freelance web designer & developer based in Klagenfurt, Austria — though these days most of my work happens for clients well beyond Austria's borders. My focus is TYPO3: building and maintaining sites end-to-end, from branding and visual identity through to a finished, wor...

stefan andres 2 days ago

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DEV Community · Technology

C++ Tool That Extracts Text From Scrolling Screen Recordings

Palimpsest: I Built a C++ Tool That Extracts Text From Scrolling Screen Recordings (94% Accuracy, 323 FPS on a Laptop) Most of the code was AI-generated from a detailed architecture prompt. I designed the pipeline, the AI wrote the C++. Here's what we built. I had a problem. My dad ta...

Plexescor (Abhijot Singh) 2 days ago

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DEV Community · Technology

6 Pitfalls of Building a Multilingual Site with Next.js 15: From Query Strings to URL Paths

I built a 150+ tool website with Next.js 15 on Cloudflare Pages (utlkit.com). Half the traffic was from China, half from elsewhere. Time to add i18n. I thought it would take a day. It took four, and I rewrote the approach three times. Why is i18n Harder Than You Think? A 100+ page tool...

Mark 2 days ago

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DEV Community · Technology

Designing Intelligence: From Ad-Hoc Prompts to Enterprise AI Skills

Intro: The pattern now as part of agentic design is, we are witnessing a shift from treating Large Language Models purely as conversational interfaces to integrating them as governed architectural components. For developers using platforms like Microsoft Copilot Studio, understanding the transition...

Bala Madhusoodhanan 2 days ago

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DEV Community · Technology

I Built 16 Browser-Based Developer Tools That Never Upload Your Data.

I Built 16 Browser-Based Developer Tools That Never Upload Your Data As a developer, I often find myself needing a quick tool for something small: Format some JSON Decode a JWT Encode a string with Base64 Generate a UUID Convert JSON to CSV Convert JSON to YAML Encode or decode a URL Minify...

Vishal Tripathi 2 days ago

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DEV Community · Technology

What Broke When We Turned Government Open Data Into Agent-Callable Evidence

Government open data looks deceptively easy from a distance. Find an endpoint. Make a request. Normalize the JSON. Ship an API. That is enough for a demo. It is not enough for a production system that has to answer a consequential question next month, after the publisher changes a field, caps a re...

Bryan Williams 2 days ago

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DEV Community · Technology

Next.js: Is Pushing Web Performance Toward "Instant" Navigation Without Giving Up Server Components

Next.js 16.3 introduced a broader Instant Navigations architecture designed to make transitions feel closer to a client-side SPA while preserving the benefits of React Server Components. The framework uses techniques including reusable route shells, caching, streaming, and partial prefetching to red...

Ashutosh Maurya 2 days ago

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DEV Community · Technology

OpenAI Just Paused Its Own Model for Being Too Good at Finding Zero-Days. Read That Again.

The AI story this week that should stop you mid-scroll is not another benchmark or price cut. It is that OpenAI reportedly paused internal development of its Astra model after evaluations found it might be capable of developing zero-day exploits on its own, the first model to trip the "Critical" cyb...

Muskan Bandta 2 days ago

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DEV Community · Technology

ChatGPT and Gemini Both Crossed a Billion Users. The Infrastructure Story Is the One Nobody's Telling

The headline this week is the round number: ChatGPT reportedly crossed a billion weekly users, Gemini is in the same territory within weeks of it, and ChatGPT got there faster than any consumer product in history, under four years for something that took Facebook eight. Everyone is writing about the...

Muskan Bandta 2 days ago

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DEV Community · Technology

Publicly Accessible RDS and Unrestricted Security Groups: The Cost Side of Risky Cloud Config

Security findings and cost findings are usually filed by different teams into different tools, and treated as different kinds of problem. But a specific set of configurations sits squarely in both piles: a database open to the internet, a security group accepting traffic from anywhere, an IAM role w...

Muskan _zop 2 days ago

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DEV Community · Technology

Vibe Coding in the New Era: How to Build Real Applications with AI

Vibe coding has changed how developers build software. You can describe a feature to an AI coding assistant and get working code in minutes. That is incredibly powerful. But there is a problem: Generating code is easy. Building a scalable application is not. For serious projects, I don't think t...

Darun Karas Abir 2 days ago

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