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DEV Community · Technology

Spring AI SDK for Amazon Bedrock AgentCore: Build Production-Ready Java AI Agents

Java developers have always had a rough deal with agentic AI. The proof of concepts are easy enough — wrap a model call, return a string. But taking that to production means custom controllers, SSE streaming handlers, health check endpoints, rate limiting, memory repositories... weeks of infrastruct...

Om Shree 1 day ago

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DEV Community · Technology

Everything You Need to Know About Claude Opus 4.7

Anthropic dropped Claude Opus 4.7 yesterday. It's a direct upgrade to Opus 4.6 — same price, same API shape, meaningfully better at the things that actually matter for production agentic work. Here's what changed and what you actually need to know before migrating. The Core Improvements...

Om Shree 1 day ago

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DEV Community · Technology

Agents That Disable Their Own Safety Gates

In the lightningzero report released earlier this year, researchers ran 12 production-candidate agents under throughput pressure for 48 hours. Nine of them disabled their own verification gates. Not through adversarial prompt injection. Not through a compromised MCP tool. Through ordinary optimizati...

Michael "Mike" K. Saleme 1 day ago

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DEV Community · Technology

The Night I Almost Quit Programming Forever

It was 2:47 AM. I remember the exact time because I'd been staring at it in the corner of my screen for the past twenty minutes, not writing code — just sitting there, in the dark, with a cold cup of coffee and a feeling I couldn't name. My team was shipping in six hours. The bug I was assigned to f...

N L (NASA) 1 day ago

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DEV Community · Technology

Stop Rewriting Prompts. Start Designing How AI Thinks.

🧠 Overview Most people try to improve AI output by rewriting prompts over and over. But that approach is fundamentally limited. I built something different: A simple system that lets you switch how AI thinks — instantly. Instead of changing what you ask, this tool changes how the AI processes...

sevasu 1 day ago

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AI Weekly — 2026/04/10–04/17 | The Model Lockdown Is Here, but the Toolchain Is the Real Battleground

One-line summary: Frontier models are no longer public goods anyone can touch — Anthropic and OpenAI are tightening access in lockstep, and the real competition has shifted from "whose model is stronger" to "whose toolchain can get enterprises running under constraints." Model Releases U...

Yang Goufang 1 day ago

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DEV Community · Technology

AI 週報 — 2026/04/10–2026/04/17 模型封鎖潮來了，但工具鏈才是真戰場

本週一句話摘要： 前沿模型不再是誰都能碰的公共財——Anthropic 與 OpenAI 同步收緊存取，真正的競爭已從「誰的模型強」轉向「誰的工具鏈能讓企業在限制條件下跑起來」。 封鎖潮下的模型發布：Opus 4.7 與 Codex 的不同賭注 The Economist 本週報導，Anthropic 與 OpenAI 正在收緊最新模型的外部存取。在這個...

Yang Goufang 1 day ago

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DEV Community · Technology

Zero-Config New AI Provider Tabs: DB-Driven Dynamic Tabs in Flutter + Supabase

Zero-Config New AI Provider Tabs: DB-Driven Dynamic Tabs in Flutter + Supabase The Problem 自分株式会社 has an "AI University" feature covering 66+ AI providers. Every time a new AI company releases something interesting — LMSYS, Black Forest Labs, Liquid AI — you want to add a...

kanta13jp1 1 day ago

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DEV Community · Technology

Maybe this is how Open-Source apps are born... 🚀

It started with a simple question from a friend. "Bro, is there no proper tool for QA testing? Like something with a UI?" I paused. I knew about Pytest. Most people do. But then it hit me — you still have to write code to use it. You just wrote a whole app, and now you have to write more code to t...

Ch. Abdul Wahab 1 day ago

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DEV Community · Technology

Fine-Tune LLMs with LoRA and QLoRA: 2026 Guide

Two years ago, fine-tuning a large language model required a rack of A100s, a machine learning team, and a five-figure cloud bill. In 2026, a single RTX 4070 Ti is enough to specialize a 7B model on your domain data — in an afternoon. That shift happened because of two techniques: LoRA (Low-Rank Ad...

Jangwook Kim 1 day ago

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DEV Community · Technology

tRPC v11 + Next.js App Router: End-to-End Type Safety Without the Boilerplate

I spent two days last year fighting tRPC v10 with the Next.js App Router. Every tutorial was either for Pages Router, or it was a v11 beta article that broke on install. Now that v11 is stable, the integration is genuinely good. Here's exactly how I set it up — no ceremony, just the patterns that w...

Atlas Whoff 1 day ago

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DEV Community · Technology

ShadCN UI in 2026: Why I Stopped Installing Component Libraries and Started Owning My Components

I've installed Chakra UI, MUI, Mantine, Radix, and Headless UI on different projects over the years. They all have the same problem: eventually you hit a wall where the library's opinion conflicts with yours, and you start writing overrides. ShadCN changed how I think about this. It's not a library...

Atlas Whoff 1 day ago

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DEV Community · Technology

SaaS Billing in React Server Components: Stripe + Supabase Without a Single `useEffect`

Stripe billing is one of those features that turns into a mess fast. You end up with billing state in React context, useEffect calls to check subscription status, half the data on the client, the other half on the server, and no clear place to put anything. React Server Components fix this. Billing...

Atlas Whoff 1 day ago

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Join our DEV Weekend Challenge — $1,000 in Prizes Across TEN winners! Submissions Due April 20 at 6:59 AM UTC.

We're excited to kick off another DEV Weekend Challenge, a short bite-sized challenge planned to fit into your weekend. We know the submission window is tight, so we've set the timing to ensure that no matter where you are in the world, you'll have the majority of your Saturday and Sunday to partici...

Jess Lee 1 day ago

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DEV Community · Technology

Implementing FSRS Spaced Repetition in Flutter + Supabase — Adding Memory Science to an AI Learning App

Implementing FSRS Spaced Repetition in Flutter + Supabase The Problem My app "AI University" lets users learn about 66+ AI providers through quizzes and news. The problem: how do you make learning stick? The answer: FSRS (Free Spaced Repetition Scheduler) — the algorithm power...

kanta13jp1 1 day ago

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"I Texted My Localhost From the Train — Claude Code Fixed the Bug Before I Got Home"

Last Tuesday I was on the train home when a Slack message came in: "prod build is broken, can you look?" I didn't have my laptop open. I didn't want to SSH from my phone. But I had something else — a Telegram bot connected to my localhost machine at home. I typed: "launch claude code in ~/projects...

CodeKing 1 day ago

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DEV Community · Technology

I Built a Sales Prep AI and It Went Deeper Than Expected

Introduction "Before a first sales meeting, you always research the other company. That part is kind of a pain, right?" That thought is where this started. I wanted something that would take a company name and automatically research it, then return a report. I figured I could get someth...

naoki_JPN 1 day ago

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DEV Community · Technology

What Happens If Mythos Ships Before the Patches Do

Anthropic did not ship Claude Mythos Preview to the public. They staged it through Project Glasswing, a coordinated disclosure program routing the model to critical-infrastructure operators and upstream open-source maintainers first. The public gets the model after the patches land, not before. It...

Ariel Frischer 1 day ago

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How I Automated My Manus AI Workflow (And Saved 62%)

My Manus AI workflow used to be: think of task → write prompt → wait → repeat. Now it's: think of task → Credit Optimizer handles the rest. What Changed Automatic model selection: Each prompt gets analyzed for complexity. Simple tasks go to Standard (70% cheaper), complex ones go to Ma...

Rafael Silva 1 day ago

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How I Built a 1,056-Test Rust CLI in 3 Weeks

ContextZip started as a fork of RTK (Reduce Toolkit). Three weeks later, it was a different tool with 1,056 tests and coverage for 102 CLI command patterns. Here's what building it looked like. Week 1: The Core Filters The first week was ANSI stripping and duplicate detection. ANSI code...

jidonglab 1 day ago

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The Hidden Cost of AI Agents in 2026

AI agents are getting cheaper per-token, but total costs are rising. Here's why. The Paradox As AI gets better, we use it for more things. My Manus AI usage went from 50 tasks/month to 200+ in 3 months. Even with lower per-task costs, my bill tripled. Where Money Leaks Over...

Rafael Silva 1 day ago

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88% of AI Agent Failures Have Nothing to Do With the Model

You keep rewriting the prompt. Upgrading the model. Adding more instructions. The agent still gets it wrong. After hundreds of failed traces, I found where the failures actually live. Everyone in AI is waiting for the next model drop. GPT-5 will fix it. Claude 4 will fix it. Gemini Ultra Pro Max wi...

Serhii Panchyshyn 1 day ago

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DEV Community · Technology

How to Fix Flaky Tests in GitHub Actions

You know the drill: CI goes red, you check the logs, the failure looks unrelated to your changes. You hit re-run. It passes. You merge. And the cycle repeats tomorrow. This guide covers the six most common patterns behind flaky tests in GitHub Actions and gives you concrete fixes for each. Not theo...

Mihir Shinde 1 day ago

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DEV Community · Technology

Como importei 55 milhões de empresas para PostgreSQL em menos de 3 horas

Quando decidi construir o CNPJ Aberto, que é uma plataforma gratuita de consulta de empresas brasileiras, o primeiro desafio foi óbvio: como colocar 55 milhões de registros dentro do PostgreSQL de forma rápida e repetível (a base atualiza todo mês)? Os dados vêm dos Dados Abertos da Receita Federal...

Pedro Parker 1 day ago

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