DEV Community • 2026-04-16 04:39

🧹 repomeld v1.1: Finally, a Tool That Knows What NOT to Include

Stop polluting your AI context with jQuery, Bootstrap, and 47MB of vendor code. The Silent Killer of AI Context You run a tool to combine your codebase into a single file. You paste it into ChatGPT. The AI responds with: "I see you're using Bootstrap 5.3.0, jQuery 3.6.0, Lodash 4.17.21, Moment.js 2.29.4, and 47 other libraries. Your actual code is 12% of this file." You've jus...

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5m read
DEV Community • 2026-04-16 04:38

On-Premise Testing for Banking Apps Without Trade-Offs in Compliance

Banking applications depend on multiple internal systems including authentication services, core banking platforms and more. Testing how a mobile app interacts with these systems is essential especially the customer facing functionalities. However, access to these services is often restricted to the organization's network due to strict cyber security policies. This is where on-premise mobile te...

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5m read
DEV Community • 2026-04-16 04:37

Claude Code Routines: What Anthropic's Docs Left Out

Anthropic just released official documentation for Claude Code Routines. It's good. It's also incomplete in ways that will bite you in production. I've been running Routines (we call them Skills in our system) in production for months across a 13-agent orchestration system. Here's what the docs won't tell you. What the Docs Say (Quick Summary) Routines are reusable instruction sets...

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4m read
DEV Community • 2026-04-16 04:37

The M N Problem: Why Every AI Tool Integration You've Built Is Already Technical Debt

You've got Claude integrated with your database. And your Slack. And your GitHub. And your Notion. Congratulations — you've created a maintenance nightmare. Here's why, and the architectural fix that's been sitting in the open since late 2024. The M×N Integration Problem Classic integration math: M AI models (Claude, GPT-4, Gemini, local LLMs) N tools/services (GitHub, Slack, d...

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3m read
DEV Community • 2026-04-16 04:37

The 90/10 rule that security researchers figured out before developers did

The security researcher who wasn't talking about you Dr. Karsten Nohl is a German security researcher, best known for publicly exposing critical vulnerabilities in GSM and SS7 mobile infrastructure — systems that affect how billions of phone calls are routed. He doesn't work in developer productivity. He's not affiliated with any side project tool. He was describing enterprise AI securi...

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8m read
DEV Community • 2026-04-16 04:33

Why Your LED Color Transitions Look Fake

Your LED Color Transition Is Lying to You The problem isn't your code. It's the space your colors live in. You spent three hours tuning a color transition. Yellow to violet. You wrote the code, uploaded it, and watched your LED strip glow from yellow to white to violet. Wait — white? You didn't ask for white. But there it is, right in the middle, between yellow and violet. It doesn't...

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2m read
Building a Financial Agent That Actually Works: Composio MCP + Hermes
DEV Community • 2026-04-16 04:30

Building a Financial Agent That Actually Works: Composio MCP + Hermes

I recently explored Hermes Agent to see how far I could push autonomous workflows in a real-world use case. Instead of just experimenting, I wanted something practical, so I decided to build a financial analyst agent that could fetch, process, reason over financial data and suggest me stocks in this era of war. This blog post walks through exactly how we: Securely Set up Hermes Agent Integra...

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11m read
Building Charts with Pure CSS — No SVG, No Canvas, No JS Required
DEV Community • 2026-04-16 04:29

Building Charts with Pure CSS — No SVG, No Canvas, No JS Required

Most developers reach for a chart library the moment they need a visualization — Chart.js, Recharts, D3 — and suddenly their page is carrying a hefty bundle just to draw a few lines. What if CSS alone could handle it? That's exactly what st-core.fscss pulls off. It renders fully functional line charts using nothing but browser-native CSS features, compiled at build time. The Mechan...

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2m read
DEV Community • 2026-04-16 04:25

The 5 Questions to Ask Before Touching Any Component

The 5 Questions to Ask Before You Touch Any Component You know the feeling you want. The lamp that notices you. The installation that reacts like it's alive. The sculpture that breathes. You can describe the atmosphere in precise sensory language. But when you open a tutorial, it's about wiring LEDs and Arduino code, and something in you goes quiet. This is not a technical gap. The ga...

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4m read
DEV Community • 2026-04-16 04:25

How to Migrate from Deprecated VAPI Transcriber Endpoints to Deepgram v2 in Retell AI Agents

How to Migrate from Deprecated VAPI Transcriber Endpoints to Deepgram v2 in Retell AI Agents TL;DR VAPI's native transcriber endpoints are deprecated. Retell AI agents using old STT configs will fail silently or timeout mid-call. Migrate to Deepgram v2 by swapping transcriber provider configs and updating webhook payloads. This prevents dropped transcripts, reduces latency by...

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13m read
I built an app that lets you chat with your past self — using your real messages
DEV Community • 2026-04-16 04:25

I built an app that lets you chat with your past self — using your real messages

I texted my 22-year-old self last night. He told me about a hackathon project I'd completely forgotten. He used slang I haven't used in years. He was worried about things that don't matter anymore — and passionate about things I've since abandoned. He wasn't an AI pretending to be me. He was me — reconstructed from 47,000 real messages I'd sent between 2014 and 2018. This is Pratibmb. ...

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7m read
Why Your LED Strip Flickers Because of WiFi Interference
DEV Community • 2026-04-16 04:25

Why Your LED Strip Flickers Because of WiFi Interference

Why Your ESP8266 LED Strip Flickers When WiFi Is On Source: Hackster.io / WiFi Controlled Desk Lamp project You build a fire effect. It works perfectly when WiFi is off. Then you enable WiFi and the last 20 LEDs start flickering. Or worse — the whole strip goes chaotic every 10 minutes. You did everything right. The code looks correct. But your project feels unreliable. The...

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3m read
DEV Community • 2026-04-16 04:25

How We Built a Module Audit Script for a 166-Component HubSpot Site

When a team tells you their HubSpot site has about 40 modules, and the actual count turns out to be 166, the first problem is not cleaning it up. The first problem is just figuring out what is there. This post is about the audit script we built to answer that question. Not a polished product. Just a script that ran against the HubSpot Design Manager and the CMS API and spit out a CSV we could act...

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8m read
DEV Community • 2026-04-16 04:24

Best GitHub README Examples (And What Makes Them Work)

Most GitHub READMEs fall into one of two failure modes: the wall of text that explains everything except how to get started, or the three-line stub that was meant to be filled in later. Neither works. Here's what actually makes a README good — with specific patterns you can steal. What every good README has in common The best READMEs answer three questions in the first screen of conte...

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2m read
Hacker News: Front Page • 2026-04-16 04:22

A Look into NaviDial, Japan's Legacy Phone Service

Article URL: https://www.tokyodev.com/articles/a-look-into-navidial-japan-s-legacy-phone-service Comments URL: https://news.ycombinator.com/item?id=47788633 Points: 6 # Comments: 0

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1m read
HackerNoon - programming • 2026-04-16 04:20

Can COT Data Predict Crude Oil Moves? Building a WTI Strategy

A step-by-step guide to building and backtesting a crude oil strategy from COT data and historical WTI prices.Read All

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1m read
Do this as a developer to get promoted (and earn way more than you expect)
DEV Community • 2026-04-16 04:20

Do this as a developer to get promoted (and earn way more than you expect)

Not a new framework. not AI. not working longer hours. just learning how promotions actually work for engineers. For years, I thought promotions were basically a reward system for pain. You take the ugly tickets.You fix the flaky service no one understands.You’re the person people ping when prod sneezes. Surely that adds up to something… right? What actually happens is quieter and more annoying. ...

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9m read
Status pages, trust, and the limits of a green dashboard
DEV Community • 2026-04-16 04:17

Status pages, trust, and the limits of a green dashboard

Customers deserve a single place to learn whether you are up, slow, or down. That need is real. The harder problem is that a polished public page is still a human product—and the incentives around it are not always aligned with engineering precision. Why the page exists at all A dedicated status surface answers questions support should not have to carry alone: Is this widespread? Is it us or an u...

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2m read
Deploying OpenClaw on AWS EC2 - A Developer's Perspective
DEV Community • 2026-04-16 04:10

Deploying OpenClaw on AWS EC2 - A Developer's Perspective

What is OpenClaw? OpenClaw is a personal AI assistant that you can deploy on your own infrastructure. It can respond to you through channels you already use — WhatsApp, Telegram, Slack, Discord, Google Chat, Signal, iMessage, WeChat, Lark, and 20+ other platforms. It can have voice conversations on macOS/iOS/Android, and render a real-time Canvas you can control. The Gateway is just the...

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8m read
DEV Community • 2026-04-16 04:06

41% of YouTube Videos Cited by AI Search Have Under 1,000 Views

Everyone's optimizing blog posts for AI search. Meanwhile, YouTube is quietly eating the citation graph, and the videos getting cited look nothing like what you'd expect. The numbers are hard to ignore BrightEdge analyzed 30 million sources across ChatGPT, Google AI Overviews, Google AI Mode, Perplexity, and Gemini from May 2024 to September 2025. YouTube is cited 200x more than any ot...

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3m read
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