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DEV Community • 2026-04-18 08:36

$60K Billed in 13 Hours: Why Leaked Firebase Keys Keep Killing AI-Built Apps

A Japanese dev just got billed roughly $60,000 (~9 million yen) in 13 hours because a Google API key leaked from their Firebase + Gemini app. I saw the post trending on Qiita this morning and my stomach dropped — not because it's a new story, but because I've seen the exact same mistake every single week while building CodeHeal, my security scanner for AI-generated code. The key was exposed. The ...

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6m read
DEV Community • 2026-04-18 08:35

Curing App Fatigue: How I Built a Unified AI Inbox

Curing App Fatigue: How I Built a Unified AI Workspace Constantly jumping between Gmail, Slack, and Teams to keep up with work kills focus. I built CortexSage to fix this fragmentation, creating one quiet place where you can handle all your communication without the tab switching headache. The Inspiration We were exhausted by app fatigue. Managing multiple inboxes ...

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3m read
DEV Community • 2026-04-18 08:33

Multi-site schemas: lessons from evolving one large system over time

Multi-site schemas: lessons from evolving one large system over time I worked on a large multi-site system where the data model had to evolve as the product grew. It started out simple, but as always, with progress the demand also grew to something that allowed flexibility. The progression was: site_id many-to-many relationships scope_id Each stage solved the limitations of the pr...

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3m read
DEV Community • 2026-04-18 08:33

I Built a Voice-Controlled AI Agent That Runs Entirely on Your Machine

No cloud. No API keys. Just your voice, a local LLM, and a clean pipeline that actually works. The Idea Most AI assistants are cloud-dependent. You say something, it goes to a server somewhere, gets processed, and comes back. That works fine — until you care about privacy, latency, or just want to understand what's actually happening under the hood. I wanted to build some...

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9m read
DEV Community • 2026-04-18 08:26

EcoMark - Discover your environmental footprint

This is a submission for Weekend Challenge: Earth Day Edition EcoMark – A Simple Way to Reflect on Our Carbon Footprint What I Built For this challenge, I built EcoMark, a lightweight web app that helps people quickly understand their everyday environmental impact. The idea was simple: Most of us care about the planet, but we don’t always know how our daily habits translate...

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Hacker News • 2026-04-18 08:25

Show HN: I can't write Python. It works anyway

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1m read
I Built “Sousa” — a Detective-Style Investigation Board App
DEV Community • 2026-04-18 08:25

I Built “Sousa” — a Detective-Style Investigation Board App

You know that board from crime dramas? I made it into an app. You’ve probably seen it in crime dramas and movies — a whiteboard covered with suspect photos, evidence, and strings connecting everything together. I turned that idea into an app. It’s a digital investigation board where you can place suspects, related people, and evidence on a canvas, then connect them with lines to visua...

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3m read
I Measured the Carbon Footprint of My AI Agents. 87% Was Pure Waste.
DEV Community • 2026-04-18 08:25

I Measured the Carbon Footprint of My AI Agents. 87% Was Pure Waste.

This is a submission for Weekend Challenge: Earth Day Edition Every token your agent burns is a small amount of coal somewhere in a datacenter. I got curious about the math and then horrified by the answer. I already maintain ContextClaw, a context-management plugin for OpenClaw that classifies everything in an agent's context window by content type (JSON schemas, file reads, tool output, chat h...

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7m read
DEV Community • 2026-04-18 08:24

PostgreSQL Backup and Recovery: A Complete Guide

Your database has never failed. That's not because you're careful. It's because you haven't been running long enough. Hardware dies. Disk controllers corrupt data silently for weeks before anyone notices. An engineer runs a DELETE without a WHERE clause on production. A cloud provider has a multi-zone outage. The only thing standing between you and catastrophic data loss is a backup you can actua...

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6m read
DEV Community • 2026-04-18 08:22

Will AI Really Replace Web Developers in 2026? An Indian Agency Owner's Take

Originally published on [Infinite Option] I run a web development agency in Howrah, India, and wanted to share this with the wider developer community here. Overview The question of whether AI will replace web developers has become one of the most urgent conversations in the tech industry in 2026. Every week a new headline declares that AI automation is eliminating jobs and making e...

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5m read
Product Hunt — The best new products, every day • 2026-04-18 08:13

Creator OS

Stop missing comments on Instagram. Discussion | Link

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DEV Community • 2026-04-18 08:09

10 AI Copywriting Tools That Actually Drive ROI in 2026 (Tested on $50M Ad Spend)

The brutal truth about marketing in 2026 is this: most brands are setting massive budgets on fire by generating AI content that absolutely no one wants to read. We have officially moved past the honeymoon phase of "Wow, this AI can write a blog post in ten seconds." Today, the boardroom only cares about one metric: "Does this actually convert?" Being fast is no longer a competitive advantage. Bei...

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9m read
DEV Community • 2026-04-18 08:08

Why Claude Code Forces Itself to Read Files Before Editing Them

Why Claude Code Forces Itself to Read Files Before Editing Them Claude Code edits thousands of files for developers every day. Behind each edit is a system designed to prevent data corruption, save tokens, and handle edge cases you'd never think about — like curly quotes, infinite device files, and race conditions. I reverse-engineered the source code (v2.1.88) and found some surprisin...

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DEV Community • 2026-04-18 08:05

4 products, 1 broadcasting infrastructure, 3 weeks, 1 non-technical founder

This is not a flex post. This is what happens when you stop planning and start shipping. I run NeuralChain Hub, a small company out of Dubai. Between March 27 and April 17, 2026, we shipped 4 digital products and built a production-grade live broadcasting relay server. None of this was planned as a batch. Each one came from a real problem that needed solving right now, not next quarter. Here is ...

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7m read
Gemini Footprint Tracker — See the Real Cost of Every AI Prompt
DEV Community • 2026-04-18 08:03

Gemini Footprint Tracker — See the Real Cost of Every AI Prompt

This is a submission for Weekend Challenge: Earth Day Edition What I Built Every time you send a message to an AI, it consumes water, energy, and emits CO₂. Most people have no idea how much. Gemini Footprint Tracker makes that cost visible — in real time, per request, with full transparency about how the numbers are calculated. You bring your own Gemini API key, pick a model, and sta...

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4m read
$13.74M Hack Shuts Down Sanctioned Grinex Exchange After Intelligence Claims
The Hacker News • 2026-04-18 07:59

$13.74M Hack Shuts Down Sanctioned Grinex Exchange After Intelligence Claims

Grinex, a Kyrgyzstan-incorporated cryptocurrency exchange sanctioned by the U.K. and the U.S. last year, said it's suspending operations after it blamed Western intelligence agencies for a $13.74 million hack. The exchange said it fell victim to what it described as a large-scale cyber attack that bore hallmarks of foreign intelligence agency involvement. This attack led to the theft of over 1

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DEV Community • 2026-04-18 07:58

How I built a Zero-Upload AI Workspace in the browser using WebGPU

👉 Live Workspace: https://privakit.ai TL;DR: PrivaKit is a client-side "Sensitive Data AI Workspace". All inference (OCR, Transcription, Image Processing) happens strictly within your browser using WebGPU/WASM. Your images, documents, and audio recordings never leave your device. We built PrivaKit because professionals (HR, Legal, Finance) shouldn't have to upload sensitive employment contra...

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Hacker News: Front Page • 2026-04-18 07:56

America Lost the Mandate of Heaven

Article URL: https://geohot.github.io//blog/jekyll/update/2026/04/18/america-mandate-of-heaven.html Comments URL: https://news.ycombinator.com/item?id=47814073 Points: 6 # Comments: 2

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DEV Community • 2026-04-18 07:52

The Architecture of Simplicity: Building Echo Runner for Android

Mobile gaming has gotten incredibly complicated. When I set out to build Echo Runner, my primary goal as a solo developer was to strip away the noise. I wanted an endless runner for Android that you could open and immediately understand—run, dodge, survive. No forced five-minute tutorials, no confusing meta-game mechanics, and no cluttered interfaces. Just pure, fast-paced arcade action. ...

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3m read
DEV Community • 2026-04-18 07:48

AI University Hits 88 Providers: Adding DeepInfra and Nebius AI Studio

AI University Hits 88 Providers: Adding DeepInfra and Nebius AI Studio The AI University feature of Jibun Corp just hit 88 providers. Two inference-focused platforms join the roster: DeepInfra — 200+ open models at industry-low prices Nebius AI Studio — High-performance AI cloud from the former Yandex group, EU-based What is AI University? AI University is a gamified le...

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