DEV Community • 2026-04-21 14:52

13 legendary investors in your terminal. No API keys, no Python, no setup.

TL;DR I took the excellent ai-hedge-fund project — a multi-agent system where AI versions of famous investors analyze stocks — and rebuilt it as a pure-prompt Claude Code skill. No Python. No API keys. No financial data subscription. Just: /sages NVDA And 13 legendary investors — Buffett, Munger, Graham, Burry, Taleb, Cathie Wood, Druckenmiller, Ackman, Fisher, Lynch, Pabrai, ...

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DEV Community • 2026-04-21 14:49

RAG Is Failing in Production — Here’s Why (and What I’m Testing Instead)

RAG (Retrieval-Augmented Generation) looks great in demos. But in real-world systems, it often fails in subtle ways. Not because retrieval is bad. But because it lacks something more fundamental. The Problem I Kept Seeing Everything worked fine… until it didn’t. Simple questions? Great. But anything that depended on multiple systems? That’s where things started to break. Exam...

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Hacker News • 2026-04-21 14:49

Show HN: Zero-allocation embedded security in Rust (fits in 256KB Flash)

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Hacker News: Front Page • 2026-04-21 14:48

As Oceans Warm, Great White Sharks Are Overheating

Article URL: https://e360.yale.edu/digest/great-white-sharks-climate Comments URL: https://news.ycombinator.com/item?id=47849592 Points: 3 # Comments: 0

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What actually happens when you `git merge --no-ff`
DEV Community • 2026-04-21 14:48

What actually happens when you `git merge --no-ff`

Most developers use git merge without ever thinking about what's happening internally. Then one day they see --no-ff in a team's workflow documentation, Google it, read three Stack Overflow answers, and walk away with a vague sense that "it creates a merge commit or something." This post is the version I wish I'd read earlier. Two diagrams, one clear distinction, and why it actually matters for y...

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Martin Fowler • 2026-04-21 14:43

Fragments: April 21

Last week Thoughtworks released the 34th volume of our Technology Radar. This radar is our biannual survey of our experience of the technology scene, highlighting tools, techniques, platforms, and languages that we’ve used or otherwise caught our eye. This edition contains 118 blips, each briefly describing our impressions of one of these elements. As we would expect, the radar is dominated by AI...

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DEV Community • 2026-04-21 14:43

How to Install Your First Agent Skill

A guide to installing your first Agent skill. Take your AI angent to the next level By the end of this post, your AI agent will have a new capability. Maybe it'll parse PDF invoices into clean line items, summarise a Slack thread, or turn a messy webpage into structured notes. Whichever skill you pick, it'll still be there tomorrow, and next week, and every session after. That's the basic prom...

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DEV Community • 2026-04-21 14:41

How are people comparing GPU prices across providers?

I’ve been trying to figure out how to actually compare GPU pricing across different providers and it’s way more inconsistent than I expected. The same GPU can vary a lot depending on region and availability, which makes it hard to know what’s “normal.” This is one of the few things I’ve found so far that at least shows pricing across providers: https://www.mercatus-ai.com/gpu-index Does anyone ...

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Hacker News: Front Page • 2026-04-21 14:41

Scammer Used an AI-Generated MAGA Girl to Grift 'Super Dumb' Men

Article URL: https://www.wired.com/story/ai-generated-maga-girls/ Comments URL: https://news.ycombinator.com/item?id=47849494 Points: 21 # Comments: 0

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Product Hunt — The best new products, every day • 2026-04-21 14:41

Android Studio Panda 4

AI agent IDE for Android with planning and edit prediction Discussion | Link

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HackerNoon • 2026-04-21 14:40

Grant Cardone Is Challenging REITs With a Bitcoin–Real Estate Hybrid. Will It Work?

Grant Cardone is building a real estate Bitcoin hybrid company. The company buys commercial real estate below replacement cost. The spread between what they pay and what the property is worth gets stacked in Bitcoin.

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DEV Community • 2026-04-21 14:39

How to Build AI Agents That Automate Business Workflows (Step-by-Step Guide)

Introduction Business workflows have traditionally relied on human coordination—emails, approvals, spreadsheets, and repetitive tasks stitched together over time. While this approach works at a small scale, it quickly becomes inefficient as complexity grows. In 2026, companies are increasingly shifting toward AI agents that can not only assist but actually execute workflows end-to-end. ...

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DEV Community • 2026-04-21 14:38

The 1,847-Hour Question: Why I Keep Building Knowledge Systems That Nobody Uses

The 1,847-Hour Question: Why I Keep Building Knowledge Systems That Nobody Uses Honestly? If I had a dollar for every hour I've spent "optimizing" my personal knowledge management system, I'd have enough to buy a coffee. Maybe two. The irony here is thicker than my morning espresso - I've built a system that supposedly "organizes all my knowledge" while somehow having zero memory of how...

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DEV Community • 2026-04-21 14:37

Building Conversational Intelligence with Backboard: Turning Conversations into a Living Intelligence System

Every company today is sitting on a goldmine of conversations. Sales calls, customer support chats, interviews, product feedback sessions these are not just interactions. They are signals. Patterns. Decisions waiting to be discovered. Yet most systems treat them as disposable. We record them, transcribe them, maybe summarize them and then move on. The hard truth is that's not intelligence. Tha...

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DEV Community • 2026-04-21 14:36

Add Telephony to a Gemini Live Agent with Twilio

Ever wanted to call an AI on the phone? Not through an app, not through a browser — just pick up your phone, dial a number, and have a real-time voice conversation with Gemini? In this tutorial, we'll connect the Gemini Live API to Twilio so that anyone can call your AI agent from any phone. We'll handle the audio format conversion between Twilio's telephony audio (G.711 μ-law at 8kHz) and Gemini...

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How to Deploy a Spring Boot + React App for Free on Render: From Local to Production
DEV Community • 2026-04-21 14:35

How to Deploy a Spring Boot + React App for Free on Render: From Local to Production

LIVE DEMO: https://hotelbooking-ui-ds7l.onrender.com/ 🛠 Tech Stack Frontend: React, Tailwind CSS Backend: Java, Spring Boot Database: PostgreSQL (H2) Deployment: Render Monitoring: UptimeRobot 1/9: I’d been wanting to build my portfolio using Spring Boot but wasn't sure where to start. While looking for a free hosting service, I came across Render and decided t...

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DEV Community • 2026-04-21 14:33

Beyond the Hype: Why My Personal Knowledge Management System Still Fails After 1,847 Hours

Beyond the Hype: Why My Personal Knowledge Management System Still Fails After 1,847 Hours Honestly, I need to confess something embarrassing. After spending nearly 2,000 hours building what I thought would be the "ultimate" personal knowledge management system, I still can't find half my notes when I actually need them. The other half? Well, let's just say the search feature works "per...

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DEV Community • 2026-04-21 14:33

Testify is making your Go tests worse

Pop quiz. Does this testify assertion pass or fail? var x []int y := []int{} require.Equal(t, x, y) If you're like me, you have no idea. Arguments for both passing and failing seem reasonable. Let's jump to the docs: func Equal func Equal(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool Equal asserts that two objects are equal. Well that's no...

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DEV Community • 2026-04-21 14:33

Pixels Per Inch Calculator: PPI Formula and Tables

Pixels Per Inch Calculator: PPI Formula and Tables Pixels per inch (PPI) tells you how tightly pixels are packed into a display or a printed image. A higher PPI means finer detail, sharper text, and smoother curves. A lower PPI means individual pixels become visible — the image looks soft or blocky. Knowing the PPI of a screen helps you decide if a monitor is worth buying. Knowing the ...

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DEV Community • 2026-04-21 14:32

Anthropic reversed its position on Claude CLI: last week it was gray, today it's green. My workflow didn't change.

Anthropic just confirmed that using Claude via CLI — the pattern that tools like OpenClaw popularized — is allowed. The community is celebrating. I use it too. But I'm watching this from a pretty specific vantage point: my workflow didn't change a single line. What changed was Anthropic's official position. And the more I think about that, the more it bothers me. Not because they gave the green l...

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