DEV Community • 2026-04-21 14:25

One month after launching Toolkiya — 97 free browser tools, real GSC numbers, what worked, what didn't

A month ago I launched Toolkiya with 65 free browser tools. It's now at 97 tools — still 100% client-side, still zero server cost. The launch post did better than I expected: hit ProductHunt, got traction on Hacker News, and pulled in real organic traffic. A month later, I have actual GSC data. Here's what it shows — and what I'd do differently. The Numbers (Google Search Console, 30...

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2m read
DEV Community • 2026-04-21 14:24

The Scripts You Didn't Write Are Slowing Down Your App

I once audited a page where nearly 40% of the main thread blocking time came from a tag manager firing scripts that the engineering team didn't know were still active. Analytics from a vendor they'd switched away from. A heatmap tool from a trial nobody cancelled. A pixel for an ad campaign that ended months ago. Nobody wrote those scripts. They accumulated. What third-party scripts ...

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5m read
DEV Community • 2026-04-21 14:21

HoloCard UI: Reimagining Web Interfaces with Native Browser Technologies

Abstract Over the past decade, web development has become increasingly dependent on large frameworks, complex dependency trees, and extensive build pipelines. While these tools have enabled rapid application development, they have also introduced significant complexity and performance overhead into modern web architectures. This article introduces HoloCard UI, a high-performance holographic port...

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6m read
Agent Package Manager (APM): A DevOps Guide to Reproducible AI Agents
DEV Community • 2026-04-21 14:21

Agent Package Manager (APM): A DevOps Guide to Reproducible AI Agents

Agent Package Manager (APM): A DevOps Guide to Reproducible AI Agents If you have been customising GitHub Copilot, Claude Code, or Cursor for your team, you have probably hit the same wall I did. You spend a weekend crafting the perfect set of instructions, prompts, skills, and chat modes, you commit them to .github/ and .claude/, and then a teammate joins the project and has a totally ...

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10m read
Hacker News: Front Page • 2026-04-21 14:19

Your favorite brands got worse on purpose

Article URL: https://www.worseonpurpose.com/p/your-favorite-brands-got-worse-on-purpose Comments URL: https://news.ycombinator.com/item?id=47849221 Points: 11 # Comments: 1

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DEV Community • 2026-04-21 14:19

Cutting our CI time in half thanks to custom AWS runners

We moved our Nx monorepo from CircleCI to GitHub Actions on self-hosted AWS runners, tightened caching, and brought the full CI run from ~33 minutes down to ~15 minutes while owning cache and runner behavior end to end. At Wecasa, our CI used to run on CircleCI. We wanted to consolidate on GitHub Actions and run jobs on self-hosted runners in AWS, with specs we control and costs we can optimiz...

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6m read
DEV Community • 2026-04-21 14:19

Migrating Yarn 1 to 4 in an Nx Monorepo

With just one migration, we reduced the execution time of yarn install on our CI from ~110s to ~25s. While also removing legacy patching with postinstall and by also keeping behaviour close enough to Yarn 1 to ensure a safe migration. At Wecasa, our frontend lives in a large Nx monorepo (web + mobile apps) and we were still running on Yarn 1.22.0. It worked well for a while, but at some point ...

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3m read
DEV Community • 2026-04-21 14:19

MCP Access Governance Across Teams, Tenants, and Third-Party Integrations

Implementing MCP access governance means scoping credentials, filtering tools, and logging every call. Here's how to apply it across teams and integrations. Agents now talk to external tools, data stores, and business systems through a single protocol. The Model Context Protocol (MCP) has settled into that role as the common interface. Missing from MCP itself, though, is an answer to the adjacent...

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8m read
From Python Basics to a Playable Blackjack Game in the Terminal
DEV Community • 2026-04-21 14:19

From Python Basics to a Playable Blackjack Game in the Terminal

As a college student learning software development, I wanted to build a project that would help me move beyond basic exercises and start thinking more like a real developer. I did not want to just practice syntax. I wanted to create something interactive that used logic, structure, and problem-solving in a way that felt closer to an actual software project. That is why I built a terminal-based Bla...

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3m read
DEV Community • 2026-04-21 14:18

3 Things I Learned Benchmarking Claude, GPT-4o, and Gemini on Real Dev Work

If you're still picking LLM providers by gut feeling, you're leaving money on the table. I ran 5 developer use cases through Claude 3.5 Sonnet, GPT-4o, and Gemini 2.0 Flash using PromptFuel to measure token usage and cost. The results? More interesting than "fastest wins." Here's what I found. The Setup I took 5 tasks I actually do in PromptFuel development: JSON schema validation p...

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5m read
DEV Community • 2026-04-21 14:18

Leyes de ingeniería de software: 56 principios explicados en 2026

Si llevás más de un par de años escribiendo código, probablemente ya te chocaste con patrones que se repiten sin importar el lenguaje, la empresa o la década. Proyectos que se atrasan aunque sumes gente. APIs cuyo comportamiento "no documentado" termina siendo depended-on por alguien. Abstracciones que parecían limpias y terminaron filtrando detalles del sistema subyacente. Todo eso no es mala sue...

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15m read
Dify Now Supports IRIS as a Vector Store — Setup Guide
DEV Community • 2026-04-21 14:18

Dify Now Supports IRIS as a Vector Store — Setup Guide

Why This Integration Matters InterSystems continues to push AI capabilities forward natively in IRIS — vector search, MCP support, and Agentic AI capabilities. That roadmap is important, and there is no intention of stepping back from it. But the AI landscape is also evolving in a way that makes ecosystem integration increasingly essential. Tools like Dify — an open-source, production-grade LLM or...

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6m read
DEV Community • 2026-04-21 14:17

🚀 Day 34 of My Automation Journey – Interfaces (Real Programs)

Today’s focus was on one of the core OOP concepts – Interfaces 🔥 Instead of only theory, I practiced real-world scenarios using interfaces and understood how they help in scalability, flexibility, and team development. 🔹 What is an Interface? 👉 An interface is a blueprint of a class ✔ Contains abstract methods ✔ Provides 100% abstraction (conceptually) ✔ Used to achieve loose coup...

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4m read
DEV Community • 2026-04-21 14:17

How to build a Claude chatbot with streaming responses in under 50 lines of Node.js

How to build a Claude chatbot with streaming responses in under 50 lines of Node.js Streaming is one of those features that sounds complicated but completely transforms the user experience. Instead of staring at a spinner for 3-5 seconds, users see the response appear word by word — like watching someone type. Here's how to do it with Claude in Node.js. The whole thing is under 50 line...

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4m read
DEV Community • 2026-04-21 14:16

Open Source Contributors Needed for Skillware & Rooms (AI/ML/Python)

If you are looking to contribute to 100% open source AI projects (not black boxes source code or backend), and pick up early enough so that good first issues are not absorbed by bots in miliseconds, but also not as early as there are no active contributors, no issue templates, ci/cd, or even proper documentation. Whether you're a human that's trying to get familiar with remote AI projects or buil...

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Hacker News: Front Page • 2026-04-21 14:11

Show HN: GoModel – an open-source AI gateway in Go; 44x lighter than LiteLLM

Hi, I’m Jakub, a solo founder based in Warsaw.I’ve been building GoModel since December with a couple of contributors. It's an open-source AI gateway that sits between your app and model providers like OpenAI, Anthropic or others.I built it for my startup to solve a few problems: - track AI usage and cost per client or team - switch models without changing app code - debug request flows more ...

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1m read
Real Python • 2026-04-21 14:10

Leverage OpenAI's API in Your Python Projects

Learn how to use the ChatGPT API with Python's openai library to send prompts, control AI behavior with roles, and get structured outputs.

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1m read
Do Agents Dream of Electric Sheep? On Soul and Dreaming
DEV Community • 2026-04-21 14:09

Do Agents Dream of Electric Sheep? On Soul and Dreaming

Before we begin Let’s start with two questions. First, can an agent have a soul? My answer is yes. Not a soul in the biological sense, of course, but something closer to a defined personality and behavioral core. In any case, recent agents do have a soul. Variations of the idea had been floating around for a while, but OpenClaw helped popularize it, and more recently SoulSpec emerged ...

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6m read
DEV Community • 2026-04-21 14:09

From AR Dreamer to Reality Checker: My 4-Month Journey with Spatial Memory

From AR Dreamer to Reality Checker: My 4-Month Journey with Spatial Memory Honestly, when I first started building spatial-memory, I thought I was going to revolutionize how people remember their lives. I mean, come on - an AR app that pins memories to real-world locations? That's straight out of Black Mirror, right? Four months and 200+ hours later, I'm here to tell you the brutal trut...

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7m read
DEV Community • 2026-04-21 14:09

How Bernstein Routes Tasks to the Right Model

Not every coding task needs Opus. Bernstein's contextual bandit router learns which model handles each task type best, then routes accordingly. In our own runs, the bandit router cut spend roughly in half compared to uniform model selection. Measure yours with bernstein cost. The uniform selection problem Most multi-agent setups use the same model for everything. Every task — whether i...

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3m read
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