Developer News

You Fixed the Rate Limits. Now Your Agent Fails Quietly.

Last week I wrote that your agent isn’t failing because it hallucinates — it’s failing because of rate limits . The capacity-engineering toolkit in that post — concurrency caps, backoff with jitter, fallback models, caching — is real and it works. De...

Prompt Engineering Is Systems Design, Not a User Skill

Prompt engineering is misunderstood because people keep treating it like copywriting. The common view is simple: A user writes a better prompt. The model gives a better answer. So the skill is learning how to ask. That view is useful for personal AI ...

My React App Froze on Every Keystroke. I Fixed It by Stealing Python's #1 Rule About Scope.

Last month I built a dashboard with about 150 components. A data table, a few charts, a sidebar, and a search bar. Nothing unusual. Then I typed into the search bar. The input lagged behind my fingers by almost 300 milliseconds. Every keystroke felt ...

Why I split a single color across two ANSI slots

I spent several weeks reading Claude Code output for hours at a stretch and the default themes were wearing me out. Not because the syntax highlighting was wrong — Claude Code is mostly prose. Tool output, reasoning traces, permission prompts: paragr...

I built a zero-dependency CLI that catches i18n drift (and knows your plural rules)

You add one string to en.json , ship it, and move on. Three weeks later a French user emails a screenshot: a raw auth.errors.locked sitting where a translated message should be. fr.json never got the key. Nor did zh.json . And nobody noticed, because...

What Is x402? The HTTP Payment Standard Built for AI Agents, Explained

TL;DR: x402 is an open standard that lets software, including AI agents, pay for APIs, data, and services directly over HTTP using stablecoins, with no accounts, API keys, or human checkout. It puts the web's unused 402 Payment Required status code t...

Your dev stack is 4 terminal tabs. It could be one labeled stream.

The daily ritual for anyone running more than one process in local dev: a terminal tab for the web server, another for the worker, another for the CSS watcher, maybe a fourth for the queue. Now you're alt-tabbing between tabs trying to remember which...

Every TODO in your codebase is lying about its age. So I built a CLI that blames them.

Open any codebase older than a year and grep for TODO . You'll get dozens of hits. Now answer me one question about any of them: How long has that been there? You can't. The comment says // TODO: validate the amount before charging and gives you noth...

A GPL dep can quietly poison your closed-source product. I built a tiny offline tool that catches it.

A few months ago a lawyer asked our team a simple question: "Can you prove nothing in this product is GPL?" We couldn't — not quickly. A couple thousand transitive deps across Node and Python services, and the honest answer was "uh, probably?", which...

The real reason enterprise AI is stuck

The reason enterprise AI remains stubbornly artisanal is not because models are too weak. It is not because context windows are too short, or agents need better prompts, or companies are resisting adoption. Those are all visible problems. But they ar...

DiffusionGemma: The Developer Guide

DiffusionGemma is an experimental text-generation model built on the Gemma 4 architecture that uses diffusion-based parallel generation instead of token-by-token autoregression, enabling much faster inference, bidirectional context awareness, and rea...

Experts say Donut Lab's "breakthrough" solid-state battery is just ordinary lithium-ion

The conclusion doesn't rest on speculation or anonymous sources. Instead, it comes down to how the battery behaves under testing. Data from Finland's VTT, including voltage curves and expansion measurements, consistently points to lithium-ion chemist...

This soundbar can be hijacked over Bluetooth to control your computer, no pairing required

That scenario comes from research into Creative Technology's Sound Blaster Katana V2X, a midrange soundbar that connects to PCs, Macs, and Linux systems over USB or Bluetooth. Researcher Rasmus Moorats uncovered the issue while experimenting with way...

The iPad was on Tailscale: a WebRTC debugging story

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DiffusionGemma: 4x Faster Text Generation

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I'm Eric Ries, author of "The Lean Startup" and new book "Incorruptible" – AMA

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Building a Lean, Single-Worker Broken URL Monitor for Data Pipelines

The Technical Problem: Websites Drift, Pipelines Don't Know Long-running scraping pipelines have a structural assumption baked in: the URLs you configured last month still resolve today. That assumption is wrong more often than you'd expect. Sites re...

Introducing Gemma 4 12B: a unified, encoder-free multimodal model

Decart’s new world model can simulate hours of photorealistic driving — with some caveats

Decart is launching Oasis 3, a real-time world model that generates photorealistic driving environments for autonomous vehicle testing, now available via API for developers to build on.

Implementing Hybrid Semantic-Lexical Search in RAG

Implementing hybrid search strategies is a critical step in building modern RAG (Retrieval-Augmented Generation) systems , especially when shifting from prototype to production-ready solutions.

Building a Multi-Tool Gemma 4 Agent with Error Recovery

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Building a Context Pruning Pipeline for Long-Running Agents

Modern AI agents built on top of large language models (LLMs) are designed to run continuously.

Scikit-LLM vs. Traditional Text Classifiers: When Should You Use an LLM?

In recent years, generative AI models like LLMs (large language models) have gradually taken over classical machine learning ones for addressing certain tasks, for instance, text classification .

Building Semantic Search with Transformers.js and Sentence Embeddings

You've probably shipped this bug before, where a user types " affordable laptop " into your search bar and gets zero results.

WWDC 2026 - Xcode 27 Ships With Apple's Own Agent Skills: What They Are and How to Use Them

At WWDC 2026, Apple did something specific and easy to miss in the flood of Siri AI headlines: Xcode 27 now ships with a set of agent skills that Apple wrote itself. These are not a community add-on or a generic format you have to go find. They are b...