DEV Community • 2026-08-14 03:48

My claude -p Call Has a --safe-mode Flag for Isolation. It Never Isolated the Two API Keys Sitting Right Next To It.

Four days ago I fixed a real problem in this repo: a bare claude -p invocation from git_commit.py was loading this project's own CLAUDE.md into a one-shot commit-message completion that had no use for it — including a "MANDATORY routing rules" block instructing the model to call MCP tools that don't exist in this environment. The fix was --safe-mode, a flag that drops CLAUDE.md/skills/plugins/hook...

0 0
5m read
DEV Community • 2026-08-14 03:46

I redacted my username from a screen recording three times and missed it every time

Originally published on my own site. I make a desktop AI agent. I recorded a demo of it writing files, and the approval dialog showed /Users/<my-username>/Downloads/… in plain text. Blurring it out should have been a five-minute job. I checked the result by eye three times and missed a leak every time. The fix that finally worked was scanning the finished video with a machine. The conclus...

0 0
5m read
DEV Community • 2026-08-14 03:42

From Detached Automation to Same-Window Control: A Practical Lesson in Browser Reliability

When people talk about browser automation, the conversation usually starts with selectors, scripts, and speed. In practice, the real challenge often shows up somewhere less glamorous: session fidelity. I recently worked through a publishing workflow where the browser automation looked correct on paper. It could open the right URL, navigate to the post editor, inspect page structure, and take scr...

0 0
4m read
DEV Community • 2026-08-14 03:40

JavaScript Variables

JavaScript Variables A variable in JavaScript is a place where we can store some data and use it later in our program. We can store a name, age, number, text, or many other types of data inside a variable. For example, let name = "John"; stores the name John and let age = 20; stores the number 20. We can then use these values whenever we need them. let name = "John"; let age = 20; c...

0 0
3m read
DEV Community • 2026-08-14 03:39

Unemployed and overthinking every life choice, so I built a Dual-Oracle (Tarot + I Ching) Decision Matrix to predict my job hunt

Like many fresh CS grads struggling in this job market, I’ve spent the past few months trapped in an endless loop of overthinking. Should I keep applying for backend roles? Should I relocate? Should I start my own thing? To cope with the anxiety and stay sharp with my coding skills, I decided to combine two of my biggest passions: software engineering and esoteric philosophy. I built HexaPodSphe...

0 0
1m read
DEV Community • 2026-08-14 03:35

Add Model Fallback to an OpenAI-Compatible Node.js App

A single model can be unavailable, rate-limited, or temporarily slow. If your application already uses an OpenAI-compatible API, a simple fallback can make testing more resilient without introducing another SDK. This tutorial uses Node.js and the official OpenAI JavaScript package. It tries one model first and switches to a second model only when the first request fails. 1. Install the ...

0 0
2m read
DEV Community • 2026-08-14 03:31

API Gateway vs Reverse Proxy: What’s the Difference?

API Gateway vs Reverse Proxy: What’s the Difference? When building modern web applications, you'll often hear terms like API gateway, reverse proxy, load balancer, and edge gateway. They all sit between clients and backend servers, so it can be difficult to understand what actually makes them different. The confusion is understandable. A reverse proxy can route requests, hide your bac...

0 0
12m read
DEV Community • 2026-08-14 03:24

Notes from getting QuickBooks to accept a generated .qbo file

I'm building a small tool that converts bank CSV files into .qbo files for QuickBooks (qbofile.com). When a generated file is wrong, QuickBooks rejects it with vague errors and the OFX spec doesn't tell you what QuickBooks actually checks. So I ran some experiments. Notes below, in case someone else hits the same wall. The file is not XML .qbo is Intuit's version of OFX 1.0.2, which is...

0 0
2m read
DEV Community • 2026-08-14 03:21

Visual Studio 2026 Debugger Detection Failure

This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry. Background I was building a Coding Activity Tracker to give me realistic timing for how long I actually spend coding — typing, reading, debugging, idle, everything. For that to work, it needed to know when Visual Studio was debugging anything, because breakpoints completely change how an app behaves. Run...

0 0
4m read
DEV Community • 2026-08-14 03:21

Zero-Trust SSH Access Blueprint: FIDO2 Hardware Keys & SSH Certificate Authority

Zero-Trust SSH Access Blueprint: FIDO2 Hardware Keys & SSH Certificate Authority Executive Summary Executive Summary & Key Security Takeaways ← Back to Articles Cyber Security • Zero Trust SSH Zero-Trust SSH Access Blueprint: FIDO2 Hardware Keys & SSH Certificate Authority By Zyekh Abdul Qadir Jailani Published: August 3, 2026 8 min read (1,250+ Words) ...

0 0
5m read
DEV Community • 2026-08-14 03:18

Hello DEV! How I'm Blending Technical SEO with Vibe Coding to Build Tools

Hey DEV Community! 👋 I'm Hoang, a Technical SEO Specialist and Web Builder. I'm fascinated by the intersection of search engines, web technology, and AI. While I don't come from a formal Software Engineering background, I’ve been heavily leveraging AI-assisted development (Vibe Coding) to build custom web applications, utility tools, and micro-platforms. 🛠️ What I'm currently working ...

0 0
1m read
DEV Community • 2026-08-14 03:16

CSS Anchor Positioning: Building Tooltips Without JavaScript Positioning Hacks

Introduction Positioning a tooltip sounds simple. Put a small box next to a button. Done. But anyone who has built one knows that it can quickly turn into: position: absolute calculating coordinates listening for resize events handling scrolling checking whether the tooltip fits on screen and sometimes pulling in an entire positioning library Modern CSS is starting to change that....

0 0
4m read
DEV Community • 2026-08-14 03:14

Token Bucket vs. Sliding Window: Building Rate Limiters That Actually Hold Under Load

Rate limiting sounds like a solved problem until you actually implement one and watch it fail in a way your load test didn't predict: legitimate bursts getting rejected, or a limiter that lets through 2x its stated limit at window boundaries. The failure modes are specific enough that it's worth working through the two dominant algorithms — token bucket and sliding window — with actual code, not j...

0 0
7m read
DEV Community • 2026-08-14 03:10

Support Catalog Backfill: Moderate Existing Posts and Comments in a Node.js Bulk Job

Per-tenant cost visibility changes the design: don't begin with parallel API calls; begin with a durable ledger that ties every classification result and usage record to a tenant, policy version, and source item. For a customer-support catalog backfill, the practical choice is a bounded Node.js worker that reads existing posts and comments, classifies them through a replaceable adapter, checkpoint...

0 0
8m read
How LLMs Are Trained After Pretraining: SFT, Reward Models, and RL Without the Alphabet Soup
HackerNoon • 2026-08-14 03:10

How LLMs Are Trained After Pretraining: SFT, Reward Models, and RL Without the Alphabet Soup

A practical map of LLM post-training: how SFT, reward models, RL (PPO, GRPO), DPO, and RLVR fit together, and why a reward model is not RL.

0 0
1m read
DEV Community • 2026-08-14 03:10

Hoisting

Hoisting in JavaScript is the engine’s behavior of moving declarations to the top of their scope (global or local) before execution. Because of hoisting, you can reference functions or variables in your code before the lines where they are defined. 1.Function Declaration Function declarations are hoisted in their entirety—both the declaration and the body. This means you can call a function be...

0 0
1m read
HackerNoon - programming • 2026-08-14 03:09

System Design Interview Prep in 2026: Why Knowing the Concepts Isn't Enough Anymore

System design interviews now test live reasoning under changing constraints, not memorized designs. A solid prep stack layers interactive fundamentals, interview-shaped practice problems, and real mock interviews — skipping any one layer leaves a gap. Includes a runnable base62 encoding example for the classic URL-shortener question.Read All

0 0
1m read
DEV Community • 2026-08-14 03:07

How We Built an Instant AI Security & Code Auditor in Next.js & Convex

🚀 How We Built an Instant AI Security & Code Auditor in Next.js & Convex When building security or code auditing tools, speed is everything. Developers won't wait 45 seconds for a bloated PDF report—they want instant feedback on potential bugs, security leaks, or bad practices. Over the last week, we've been building BugZ AI, a lightweight scanner designed to analyze code repos...

0 0
2m read
Rich Results, Shopping, and AI Mode: What Google Merchant Center Actually Gets You
DEV Community • 2026-08-14 03:02

Rich Results, Shopping, and AI Mode: What Google Merchant Center Actually Gets You

Ruby Rose Bloom sells one-of-a-kind vintage — a self-hosted storefront, no Shopify, no marketplace underneath it. Search Console's "Merchant opportunities" report told me 3 active products weren't showing up on the Shopping tab, and I went looking for the setting to fix. There wasn't one. What I actually found, three days of digging later, is that "get into Merchant Center" is not one thing — it's...

0 0
24m read
DEV Community • 2026-08-14 03:01

JWR: A Real-Time PhaaS Using WebSockets to Monitor Victim Input and Remotely Control Screen Transitions

JWR: A Real-Time PhaaS Using WebSockets to Monitor Victim Input and Remotely Control Screen Transitions 1. Basic Information Severity: High Article Title: Dissecting the JWR phishing framework Publisher: Cisco Talos Blog Publication Date: 2026-08-13 Original Source: https://blog.talosintelligence.com/dissecting-the-jwr-phishing-framework/ Related Sources: Talos IOC re...

0 0
6m read
Previous Next