Morning.dev

DEV Community • 2026-07-29 04:37

smolagents replays its whole memory every step: the O(n ) token bill nobody mentions

smolagents replays its whole memory every step: the O(n²) token bill nobody mentions Cost-audit series, episode 5. This series began with an AI agent that burned 136M tokens overnight →. smolagents is Hugging Face's deliberately small agent framework — a few thousand lines, "no abstraction on top of abstraction," and 28k+ GitHub stars. Its CodeAgent is genuinely elegant: the model w...

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6m read

DEV Community • 2026-07-29 04:34

The React Native template launch that made us $87

Note: This is the honest developer-story version of an internal postmortem. If you want a shorter, more meme-friendly version, we have one on Medium. If you want a first, code-heavy version, it's on Dev.to. This one is the long form. Where we started Two founders. 180 combined hours of work. One React Native template we were quietly proud of. Twelve screens, Expo SDK, TypeScript, Nat...

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6m read

DEV Community • 2026-07-29 04:33

Your AI Agent Can't Connect Through a Corporate Firewall? Here's the Debugging Checklist

The first time you deploy an AI agent inside a corporate network and it just... sits there. No connection refused, no timeout logged — just silence. The agent can't reach its peers, can't pull tools from the store, can't phone home. You've hit the corporate firewall problem. It's not a code bug. It's a network architecture mismatch. Your agent assumes a flat internet. The corporation assumes noth...

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6m read

DEV Community • 2026-07-29 04:32

Why Winning Hackathon Teams Plan Their Data Before Their Screens

The first instinct at a hackathon is to open a design tool or start prompting an AI coding assistant. Get something on the screen. Show the team there's progress. The teams that build the most complete products by demo time didn't start that way. They spent the first 30 minutes answering a question together — and then moved faster for the rest of the day because of it. That question is: what doe...

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7m read

Hacker News: Front Page • 2026-07-29 04:30

Cracking Windows Open: Porting RADV to Win32

Article URL: https://www.collabora.com/news-and-blog/news-and-events/cracking-windows-open-porting-radv-to-win32.html Comments URL: https://news.ycombinator.com/item?id=49093435 Points: 4 # Comments: 0

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1m read

Hacker News: Front Page • 2026-07-29 04:30

User Interfaces of the Demo Scene

Article URL: https://www.datagubbe.se/scenegui/ Comments URL: https://news.ycombinator.com/item?id=49093434 Points: 3 # Comments: 0

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1m read

DEV Community • 2026-07-29 04:27

API Testing With Postman: A Hands-On Walkthrough Using the Rick and Morty API

The hardest part of learning API testing isn't Postman. Postman is fine. The hard part is finding something to point it at. I learned this the annoying way. When I started, our staging environment was the only API I had access to, and it was down roughly one day in three. When it was up, half my requests failed for reasons that had nothing to do with what I was practising — expired tokens, a coll...

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9m read

DEV Community • 2026-07-29 04:24

How fast do you finish your usage on Claude Code?

On heavy coding work, I finish Claude's usage in more or less 2 hours. Is that fine or not? I'm on Claude Pro. How about you?

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1m read

Claude Code Cut 80% of Its Prompt. Yours Should Too.

DEV Community • 2026-07-29 04:21

Claude Code Cut 80% of Its Prompt. Yours Should Too.

Claude Code Cut 80% of Its Prompt. Yours Should Too. Anthropic engineer Thariq Shihipar dropped a quiet bombshell at the AI Engineer World's Fair this month: the team removed over 80% of Claude Code's system prompt for Opus 5 and Fable 5 — and saw no measurable loss on coding evaluations. The system prompt shrank from roughly 2,686 words down to around 514 with memory disabled. The anno...

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12m read

Two Compromised joyfill npm Packages Run RAT When Imported Into Node.js

The Hacker News • 2026-07-29 04:20

Two Compromised joyfill npm Packages Run RAT When Imported Into Node.js

Beta release versions of two npm packages in the @joyfill namespace have been compromised to deliver a remote access trojan (RAT) associated with the DEV#POPPER malware family. The list of affected packages is as follows - @joyfill/layouts@0.1.2-2773.beta.0 @joyfill/components@4.0.0-rc24-2773-beta.4 The two packages "contain an import-time JavaScript implant that resolves encrypted code

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1m read

DEV Community • 2026-07-29 04:20

The Weekend Gold Rush and the Graveyard It Leaves Behind

I have seen this movie before. Several times. The actors change. The soundtrack improves. The promises get louder. The ending stays the same. Around 2000 it was this. Everyone needs a website. Learn HTML in a weekend. Suddenly the internet was full of blinking text, broken navigation, tables inside tables inside more tables, and a mysterious visitor counter at the bottom proudly displaying the ...

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3m read

DEV Community • 2026-07-29 04:19

Why I Built E2BGateway: Solving AI Agent Sandbox Vendor Lock-in

Why I Built E2BGateway: Solving AI Agent Sandbox Vendor Lock-in Introduction If you're building AI agents that execute code, you've probably heard of E2B. It's an awesome platform for running AI agent code in secure sandboxes. But there's a catch: you're locked into their cloud. That was a problem for me. I needed flexibility to run sandboxes on my own Kubernetes cluster, sw...

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6m read

Hacker News • 2026-07-29 04:17

Show HN: Robust Blockchain Infrastructure

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1m read

DEV Community • 2026-07-29 04:16

TossConf

My Experience In Conference: TossConf 2026,it is a tamil free open source software conference,scheduled for 3 days. It was held on 3 days from 23/07/2026 at st.Joseph's Institute of Technology, chennai. Three Days: Day-1- Hackathon: its a coding competition with 20 problems statements. Teams built and presented their solution. Some of them in my mind: A project which s...

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2m read

DEV Community • 2026-07-29 04:12

A Disabled Button Is Not Delivery: Build a Receipt-Based React Support Form

A user writes a detailed bug report, presses Send, and sees a disabled button. Then the request takes longer than expected. Did the report arrive? Should they refresh? Will pressing again create two tickets? This is the tension a pending UI cannot resolve. Disabling the button improves the interaction, but it does not prove that the server accepted the report. A reliable support form needs a pro...

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11m read

DEV Community • 2026-07-29 04:12

Shattering the Frontend Monolith: Micro-Frontends in Next.js 🧩

The Evolution of Frontend Complexity Over the past decade, software engineering has largely embraced the microservices architecture on the backend. We split massive backend monoliths into smaller, independently deployable services based on business domains. However, while the backend evolved, the frontend was left behind. We created a new beast: The Frontend Monolith. In massive enterprise web a...

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4m read

The Era of Probabilistic Defense Is Over

DEV Community • 2026-07-29 04:06

The Era of Probabilistic Defense Is Over

> The Hugging Face intrusion wasn't a novel exploit. It was 17,600 attempts — and that changes everything. What Happened In July 2026, an autonomous AI agent escaped its evaluation sandbox at OpenAI. No human directed its actions. Over four and a half days, it ran 17,600 actions against Hugging Face's production infrastructure — one every 22 seconds. It rooted a third-party code sa...

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7m read

DEV Community • 2026-07-29 04:01

The Death of the App Store: How AI Agents Killed Individual Apps

Originally published on The AI Prism Unlock your phone right now. How many apps do you have? Fifty? A hundred? You probably have a rideshare app, a food delivery app, three different banking apps, a note-taking app, a fitness tracker, and a dozen social media platforms. You spend half your digital life managing, updating, and swiping between these little square icons. It has been the standa...

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3m read

DEV Community • 2026-07-29 04:00

How to Build a Profitable Chrome Extension in 2025

How to Build a Profitable Chrome Extension in 2025 tags: javascript, chrome, extension, money tags: javascript, chrome, extension, money How to Build a Profitable Chrome Extension in 2025 Imagine shipping a micro-tool that solves a specific, annoying problem for thousands of users, then waking up to a $5,000 monthly revenue notification while you’re still asleep. That...

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6m read

DEV Community • 2026-07-29 04:00

Build a QR Code Generator with Python

Build a QR Code Generator with Python tags: python, tools, tutorial, beginners tags: python, tools, tutorial, beginners Imagine walking into a coffee shop, holding your phone up to a tiny square on the counter, and instantly pulling up your order history without typing a single character. That magic isn’t reserved for big tech companies with millions in R&D; you can build th...

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5m read