Morning.dev

DEV Community • 2026-04-11 09:25

The Court Jester: An Anti-Productivity Extension

This is a submission for the DEV April Fools Challenge What I Built The Court Jester — a Chrome extension that injects a chaotic little jester into any webpage to mildly (and sometimes aggressively) inconvenience the user. Once unleashed, the jester: Runs across your screen for no reason Randomly claps or dances in corners Interrupts your focus with proclamations Occasionally sabota...

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2m read

Benchmark Shadows Study: Data Alignment Limits LLM Generalization

DEV Community • 2026-04-11 09:24

Benchmark Shadows Study: Data Alignment Limits LLM Generalization

A controlled study finds that data distribution, not just volume, dictates LLM capability. Benchmark-aligned training inflates scores but creates narrow, brittle models, while coverage-expanding data leads to more distributed parameter adaptation and better generalization. Benchmark Shadows: Why High-Scoring LLMs Can Be Worse at Real Tasks A new preprint, "Benchmark Shadows: Data Ali...

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6m read

DEV Community • 2026-04-11 09:24

How AI Phone Answering Actually Works Under the Hood

How AI Phone Answering Actually Works Under the Hood I've been deep in the AI voice space for a while now, and the amount of misconception about what "AI phone answering" actually means is wild. Let me break down the tech stack. The Architecture A modern AI phone answering system has roughly 4 layers: Caller → Telephony (SIP/PSTN) → STT Engine → LLM → TTS Engine → Caller ...

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3m read

DEV Community • 2026-04-11 09:21

AI Agent Protocols in 2025: A2A, MCP, and the Coming Agentic Ecosystem

AI Agent Protocols in 2025: A2A, MCP, and the Coming Agentic Ecosystem The AI agent landscape in 2025 is defined by one central question: how do autonomous agents talk to each other, to tools, and to us? Two protocols have emerged as the foundational layers of this new ecosystem: A2A (Agent-to-Agent) and MCP (Model Context Protocol). They are not competitors — they are complementary, a...

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3m read

DEV Community • 2026-04-11 09:20

I Built DevBlog: A Medium-Style Platform with Redis Caching and Background Workers

I just launched DevBlog—a blogging platform for developers to share technical content, projects, and in-progress ideas. 🔗 Live demo: https://dev-blog-post.vercel.app (currently running with demo data—feel free to create a post and test it out!) Why I Built This I wanted a space where developers could publish openly without the noise of social media, but with better engagement features...

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1m read

DEV Community • 2026-04-11 09:17

The Dark Forest Needs an Immune System

Anthropic just dropped Project Glasswing — a big collaborative cybersecurity initiative with a shiny new model called Claude Mythos Preview that can find zero-day vulnerabilities at scale. Twelve major tech companies involved. $100M in credits. Found a 27-year-old flaw in OpenBSD. Impressive stuff. But let's be real about what's happening here. Anthropic trained a model so capable at breaking int...

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6m read

How We Built an Automated Meeting Intelligence System with Google Meet, Slack, and RAG

DEV Community • 2026-04-11 09:11

How We Built an Automated Meeting Intelligence System with Google Meet, Slack, and RAG

Hi, I'm Ryan Tsuji, CTO at airCloset — a fashion subscription service based in Japan. In previous posts, I wrote about building a DB Graph MCP server that lets you query 991 database tables across 15 schemas with natural language, and a suite of 17 MCP servers that opened our internal operations to AI. This time, it's not about MCP. It's about something more fundamental — turning meetings into a...

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23m read

Cascading Style Sheets • 2026-04-11 09:10

Duplicate selectors

Have been noticing quite a few duplicate syntax selectors in the CSS files, not sure how long they've been there, but is there any way to quickly find them on other websites in the future? If so, is there an easy way to combine them? submitted by /u/Chris-2018 [link] [comments]

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1m read

DEV Community • 2026-04-11 09:07

3 layer of design token matter

"Why do you need 3 layers of CSS variables? Just use brand-800 directly." That was me. Here's what changed my mind. I made a table of how shades map in light vs dark mode: Button surface: 800 → 200 (flip to light) Badge surface: 100 → 900 (flip to dark) Disabled state: 400 → 600 (shift middle) Border color: 200 → 800 (flip to dark) See the problem? Every row flips in a DIFFERENT direction. T...

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2m read

DEV Community • 2026-04-11 09:07

Two Ends of the Token Budget: Caveman and Tool Search

Every Claude Code session has a single budget: the context window. Two hundred thousand tokens, give or take, that have to hold the system prompt, the tool definitions, the conversation history, the user's input, the model's output, and (if extended thinking is on) the chain of thought. There is exactly one pile, and everything gets withdrawn from it. The pile has two openings. Tokens flow in fro...

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29m read

Free Uptime Monitoring Using a Self-Hosted Solution

DEV Community • 2026-04-11 09:06

Free Uptime Monitoring Using a Self-Hosted Solution

I recently encountered a peculiar issue with one of my clients. They were experiencing intermittent connectivity problems with a specific website—random occurrences a few times a day where the site would become unreachable. They suspected the issue might be within their Azure virtual network environment. However, after a thorough review of their setup, I was fairly confident that the problem wasn'...

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2m read

DEV Community • 2026-04-11 09:05

My team reviews 15 PRs a day at our startup. Nobody burns out.

15 PRs. 0 burnout. Here's what really happened. We used to be 5 eng. PRs were easy. Glance, comment, merge. Then we hit 15. PRs piled up. Eng. waited 2d for feedback. PMs worried. CTO: "velocity?" IRL, most fixes took 2min to review. But 2 days... We tried all. default review necessities. Slack alerts. A Discord script that alerted. No dice. Nothing changed. Because it wasn't the tools. It was the...

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3m read

AWS Devops Agent - AI-Based Incident Analysis Demo with "The Better Store"

DEV Community • 2026-04-11 09:02

AWS Devops Agent - AI-Based Incident Analysis Demo with "The Better Store"

In a previous series of articles I have described the design and implementation of a sample ECommerce serverless solution on AWS here. The solution's source code is also available at: https://github.com/TheBetterStore. In this article I explore the new AWS DevOps Agent service which has just become generally available in March 2026, to demonstrate its AI capabilities for automatic root cause anal...

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11m read

DEV Community • 2026-04-11 09:00

Parallelism in Go — Part 1: goroutines and WaitGroup

You have a Go program making 10 HTTP calls to an external API. Each call takes about 1 second. Result: your program takes 10 seconds to finish. With goroutines, those 10 calls run at the same time and the whole thing takes 1 second — the duration of the slowest one, not the sum of all of them. That's the promise of concurrency in Go. And unlike most languages where it's a pain to set up (OS threa...

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8m read

DEV Community • 2026-04-11 09:00

Accessibility-first looks different from accessibility-compliant

Passing an axe-core audit is not the same thing as designing for accessibility. The outputs can look identical. The process that produced them is not. Most component libraries retrofit accessibility. The ARIA roles get added, the keyboard navigation gets wired, the contrast ratios get verified. It passes. But the architecture was not designed around the constraint. It was designed first, then adj...

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11m read

DEV Community • 2026-04-11 08:53

Setting up a SIP trunk for Voice AI: step-by-step (Twilio + Vapi)

SIP trunk configuration is the part of every Voice AI project that looks simple in the documentation and takes three times longer than expected in practice. Not because the technology is hard - it is not - but because the failure modes are silent, the error messages are cryptic, and the gap between a correct-looking configuration and a working one is often a single codec setting. This is the ste...

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4m read

DEV Community • 2026-04-11 08:53

Refactoring English: A mathematically compressed dialect to bridge the gap between human and machine logic.

As developers, we spend all day writing strict, strongly-typed logic. If an API returns a vague string instead of a boolean or a defined integer, the system breaks. Yet, when we step away from the IDE and talk to each other—or increasingly, when we prompt Artificial Intelligence—we use a legacy system riddled with bugs: Standard English. We use "null" values like "soon." We use subjective variab...

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4m read

DEV Community • 2026-04-11 08:51

Stop writing pandas.merge() by hand: I built a Visual Join Builder for VS Code 🧩

I got tired of typing this out, so I decided to build a tool that does it for me visually. Enter the Visual Join Builder — a free, open-source VS Code extension that gives you a drag-and-drop canvas right next to your notebook. ✨ What it does Instead of writing the code manually, you just open the extension alongside your notebook. Auto-Detection: It automatically reads the DataFrames you curr...

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1m read

Newest questions tagged css - Stack Overflow • 2026-04-11 08:50

Changing the shape of the backdrop-filter in css to match an element that's been distorted by an SVG filter

I have a button in my code that I applied an SVG displacement filter to. I want the backdrop of this button to also distort stuff behind it, as it's meant to look like water. The issue with this is that while the border and background of button changes shape fine, the backdrop filter holds its original shape. I was thinking of trying to use a mask or something, but I'm new and know next to nothing...

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1m read

DEV Community • 2026-04-11 08:47

MCP + A2A: The Two-Protocol Stack That Will Define Agent Ecosystems in 2025

MCP + A2A: The Two-Protocol Stack That Will Define Agent Ecosystems in 2025 Anthropic donated MCP to the Linux Foundation in December 2025. Google contributed A2A to the Linux Foundation in June 2025. Over 150 organizations now support the A2A protocol. These aren't just press releases — they're the birth of a new infrastructure layer for AI. What Each Protocol Does MCP (Mod...

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2m read