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0xinsider is now Polymarket analytics for sports and esports. What 149,700 wallets and 411,770 large buys say, with every query public.

ARD is a new proposal from Google, Microsoft and Hugging Face for how agents find tools. What's in it, what 0xinsider publishes, and what a registry returns.

Join the 0xInsider.com Discord community — talk markets, odds, and predictions with fellow prediction market traders in real time.

Every time I bet on myself instead of taking a paycheck, and what each one taught me.

What Answer Engine Optimization and Generative Engine Optimization mean, and how to get your site cited by AI Overviews, ChatGPT, Claude, Perplexity, and Gemini.

No QA team. No on-call rotation. One person, one binary, one financial product. The compiler is my entire engineering org.

A year of watching people bet real money on outcomes changed how I think about everything.

BotID verifies browser challenges before proxying to the backend. Here's how I set it up in Next.js 16.

Pull GSC data into Claude Code to find CTR problems, indexing bugs, and keyword gaps — then fix them in the same conversation.

Polymarket analytics for sports and esports in real-time. I grade every tracked wallet, then show which side the best of them are backing before a game starts.

What AI agents are, how the agent loop works, and why they're different from chatbots.

Buy YES and NO for less than a dollar. One of them pays out a dollar. Keep the difference.

How to build a MCP server that works with Claude Code, Gemini CLI, Cursor, and more.

Style connected UI elements with CSS pseudo-classes that respond to user interest. Interactive examples showing tooltips, forms, and navigation without JavaScript.

The ::details-content pseudo-element lets you style the expandable content of details elements separately from the summary, no divs needed.

Create animated transitions between different states of your app without complex animation libraries.

Give your AI agent access to your running application. They can see errors, inspect the network tab, check the DOM, and debug issues while you work.

Superpowers is an MCP plugin for Claude Code that enforces planning, TDD, and debugging workflows. Setup guide with real examples.

Lighthouse CI fails your builds when performance drops. I run it on every pull request.

The Next.js DevTools MCP connects Claude and Cursor to your running dev server. I use it every day.

Context7 MCP server pulls version-specific library docs into Claude Code, Cursor, and other AI editors. Setup guide and how it works.

Set up IndexNow to notify Bing, DuckDuckGo, ChatGPT, and Perplexity the moment you publish. Free protocol, 5-minute setup.

Complete guide to Next.js 16 — async params, Turbopack default, stable caching APIs, and how to upgrade. With code examples.

When everything looks the same, being different becomes valuable again

With AI tooling, a developer with 1 year of experience can match the output of someone with 10 years. The playing field has never been more level.

With AI tools like Claude Code, Cursor, GitHub Copilot, OpenAI Codex, and Lovable, is learning to code still valuable?

Ever wished your AI agent would slow down and think things through? This MCP server does exactly that

A CLI tool that checks packages for security issues and social engineering attacks before they hit your project

While everyone debates models and features, Google owns the distribution channels that make AI stick

Have you ever been curious how JavaScript was written back in the day? I was, so I dug into some of the early frameworks and libraries to see what I could learn.

V8's compile hints let you control which JavaScript gets compiled immediately during page load

Why the new Error.isError() method solves important cross-realm issues and provides more reliable error identification than instanceof

How I use the 'Three Layers of Data' architecture pattern for React and Next.js apps to avoid common pitfalls, tech debt, and improve performance

Understanding the new 16-bit floating point array in JavaScript

An exploration of Google's new open protocol that enables different AI systems to exchange information and collaborate

How scheduled developer freedom weeks can revolutionize your codebase and team morale

The vulnerability skips Next.js middleware security checks by adding a single HTTP header

Research reveals the ideal ratio of positive to negative feedback within high performing teams

Stop writing manual duration formatting code. Instead, leverage the new powerful Intl.DurationFormat API for internationalized time displays

Work for free and in return watch your passion get crushed by entitled users who are never satisfied

Be the authentic voice in a world of manufactured personas

This package compares your Node.js version against the Node.js Security Database, providing immediate feedback about potential security risks.

Create overlays and dropdowns easily with the native HTML popover API

Understanding how WeakRef helps manage memory in JavaScript

Honey's controversial affiliate link practices and what it teaches us about Silicon Valley's ethics

Use AsyncLocalStorage to carry request IDs, user context, and tracing data through async calls without passing them as arguments.

Use scrollbar-width to thin or hide scrollbars and scrollbar-gutter to prevent layout shift. Browser support, examples, and gotchas.

The simplest setup for adding Clerk authentication to your Astro project, with minimal code

A look at how browsers can highlight text fragments using CSS ::target-text, making text sharing and navigation more user-friendly

Finally, we can center things in block layouts without flexbox gymnastics

The new pseudo-classes :user-valid and :user-invalid give us a smarter way to style form validation states based on user interaction

Discover how the HTML details element can replace your JavaScript accordions and why it might be better than your current solution

Building a tech career with a sword tattooed on my neck

Copy and paste text, images, and files using the new navigator.clipboard API

Detect CSS feature support and provide smart fallbacks with @supports

CSS nesting is finally supported in all major browsers. Write cleaner, organized stylesheets without Sass or Less

The content-visibility CSS property delays rendering an element, including layout and painting, until it is needed

Transform your CSS with :has(), the game-changing selector that finally lets us style elements based on their children.

The rel='modulepreload' indicates that a module script should be fetched, parsed, and compiled preemptively, and stored for later execution

Exploring new CSS line-height units that eliminate guesswork from vertical rhythm

The search HTML element is a container that represents the parts of the web page with search functionality

From slow to fast: Using JavaScript's Performance API to optimize web apps

Understand how HTTP CONNECT enables HTTPS traffic through proxies

How to properly preload responsive images to improve initial page load

Social platforms promise exposure but quietly hold your audience hostage

Learn how to prioritize and control task execution in JavaScript using the new Scheduler API for better performance and user experience

Understanding the real use cases for WebAssembly beyond the performance hype

The creator of JavaScript and Node.js are challenging Oracle's control over the JavaScript name

Understanding recursion through real examples - why functions call themselves and when to use them

Manage yarn and pnpm versions consistently across your team

The Open Source Pledge aims to address open source sustainability challenges by encouraging companies to pay $2,000 per developer per year

How to handle unique values and key-value pairs properly without type coercion and performance issues

How to handle exact decimal calculations in JavaScript when floating-point precision isn't good enough

Deep dive into JavaScript Symbols - what they are, why they matter, and how to use them effectively

How fake job postings became a systemic problem in tech recruiting

Scrum is failing engineering teams and what it's actually costing us

A practical guide to left and right shift operators in JavaScript

Understanding the new import attributes syntax and why we can't rely on file extensions alone

Stop mixing try/catch with Promise chains - JavaScript's new Promise.try handles return values, Promises, and errors uniformly

Use the &&= operator to safely update truthy values while preserving falsy states

A guide to using ??= in JavaScript to handle null and undefined values elegantly

Welcome to the future of corporate leadership. It's efficient, profitable, and utterly inhuman

Why the first day back can reveal everything about your engineering team's health

A deep dive into Pkl, Apple's configuration language that aims to replace JSON and YAML

Symmetric encryption algorithms like Advanced Encryption Standard (AES) are largely quantum-resistant already

Meet the innovators who laid the foundation for modern computing. Their contributions span decades, creating the tools and concepts developers use every day.

A deep dive into how pipeline operators can make your code more readable and maintainable

localStorage is vulnerable to XSS and has no expiry or encryption. Learn why httpOnly cookies and sessionStorage are safer for auth tokens.

All 8 falsy values in JavaScript explained with examples. Common pitfalls with 0, empty strings, NaN, and how type coercion actually works.

Master JavaScript logical operators with practical examples and best practices

A deep dive into how browsers parse and manipulate CSS, its impact on web performance, and why it matters

A developer's guide to tech interviews - from someone who sits on both sides of the table

Inside Anthropic's unique approach to preventing talent poaching and maintaining organizational equality

How I used Cloudflare Zaraz to offload third party scripts and improve my website performance.

A guide to catching and preventing credential leaks in your code using Secretlint

A tool that packages your code to easily share with LLM models.

Examining the Devaluation of Software Engineer Titles and Its Impact on Tech Industry Integrity

Automatically improve your Astro site's performance using astro-capo

Content Security Policy (CSP) acts like a shield against XSS attacks. These attacks are sneaky - they trick your browser into running malicious code by hiding it in content that seems trustworthy. CSP's job is to spot these tricks and shut them down, while also alerting you to any attempts it detects.

When Evan You announced VoidZero, I'll admit - I got excited. And a little nervous.

How to implement the Open-Dyslexic font to enhance readability for users with dyslexia

We're often focused on big innovations and breakthrough moments. But what if the real key to long-term success lies in the small, everyday actions we often overlook?

Silicon Valley has a reputation for youth worship. The 'move fast and break things' mentality often translates to a preference for younger, supposedly more adaptable workers.

Learn the art of scope management to keep your projects fixed in time and cost

Being a developer sometimes feels like being the goalkeeper in a soccer match. You make a hundred great saves, and no one bats an eye. But let one ball slip through, and suddenly you're the village idiot.

'We're not just a company, we're a family!' It's a nice sentiment, sure. But it's also a load of crap.

New research reveals a shocking loss of control in corporate IT environments

When faced with a challenge, I always step back to see the whole picture first. It's like pausing a complex strategy game to study the map. You might lose a few seconds of play time, but you gain a crucial understanding of the battlefield.

As a founder, you're always on the lookout for smart ways to grow your startup without burning through your limited resources. That's where the barnacle strategy comes in.

Explore the concept of micro frontends in web development, understand their benefits, and learn when this architectural approach is most effective for building scalable applications.

Exploring the key innovations and strategies that transformed Google into a global technology leader

How Jeff Bezos' 'Day 1' philosophy turned an online bookstore into a global powerhouse

Diving deep into the lesser-known factors that propelled Apple from a garage startup to a tech titan

Discover the biggest obstacle to success in tech and learn how to overcome it

How to turn your non-traditional background into your biggest asset

Users don't care how elegant your code is. They care if it solves their problem.

How to create essential documentation that actually gets read and used.

Should you diversify your skills or specialize?

Create comprehensive, engaging documentation by adopting journalistic techniques for research and storytelling

How Cloudflare's new AI management tools could revolutionize content creation, potentially reshaping the internet landscape for both website owners and AI companies.

If you've ever wondered why your carefully planned software architecture ends up looking suspiciously like your org chart, you're not alone. Welcome to the world of Conway's Law.

Just like a utility player on a sports team discovering their ideal position, internal mobility allows you to explore different areas of engineering and find your true passion.

Teams often neglect to create good documentation. Code gets delivered, but updating the docs is treated as a secondary task, easily postponed—until it’s too late.

Weeks of coding can save you hours of planning. It’s one of those sayings that’s been around forever, and for good reason—it’s a warning that still holds up today.

Once you're competent, everything changes. You stop second-guessing yourself. You stop panicking every time you encounter a new problem. And you start taking on bigger challenges with excitement rather than dread.

How Meta and other companies use the 'code wins arguments' mindset to turn ideas into reality

It’s not just about getting the message across; it’s about doing so in a way that’s easy for others to follow. Good writing shows respect for your team and your work.

Letting go of difficult or harmful users can be the key to maintaining the health and growth of your product

Great products speak for themselves, without the need for massive marketing campaigns

How Amazon's emphasis on eliminating weasel words leads to more precise, actionable communication and better decision-making

Discover how FAANG companies like Amazon, Google, and Netflix reduce the hidden costs of meetings by embracing written communication and minimizing unnecessary gatherings.

A deep dive into the strategies, mindset, and team culture that have made MrBeast one of the most successful creators on YouTube

A detailed look at the key changes and improvements in Express v5.0 and how to migrate your app

Why staying relevant in tech means constantly adapting to new technologies and trends

How the Speculation Rules API improves web performance by prefetching and prerendering future navigations

Why real company culture grows from the ground up, not top down.

How to save bandwidth and speed up your site by lazy-loading iframes

Using link rel='preconnect' can improve your website's performance by reducing connection setup times to key external domains.

Introducing The Crutch Effect

Mental toughness gets developers through challenges like debugging, picking up new tools, and hitting tight deadlines. It’s about staying calm and pushing through when things get tough.

Technical debt isn't the monster under your bed, but it can become one if ignored too long.

Google’s Gemini pulls summaries from websites and slaps them directly into the search results

Cyclomatic complexity is like counting how many ways a car can go. More options make it harder to drive because you have to make more decisions, which can lead to confusion.

setImmediate runs after I/O, setTimeout(0) runs after the timer phase. Here's when to use each, with event loop diagrams.

Unrealistic deadlines are more than just stressful—they set engineers up for failure

Closures are essential for creating functions that maintain state, without relying on global variables.

Clarity is key: being explicit makes your code more readable and maintainable.

Handle multiple errors at once

Testing can be tricky, especially when it comes to handling API calls.

The Power Play: Gemini Nano in Chrome

Early returns and intermediate variables make your code easier to reason about

Issues and catastrophic failures caused by regex

It’s a small feature, but it can make a big difference.

How the Suspense component manages async dependencies and improves loading states in Vue apps

The 'with' statement is the only feature ever deprecated in JavaScript

List of useful Unix terminal commands to boost your productivity. Here are some of my favorites.

We don't need packages to handle basic JavaScript tasks

Identify and fix common JavaScript memory leaks (Node.js and Deno.js)

Automate security flows and ensure your team follows security best practices

And it will be your downfall if you choose to ignore it

Tips for Keeping All Frontend Applications Secure

Performance is not a luxury; it's a necessity

Building a startup is an exhilarating journey, filled with highs and lows

Skeleton loading screens enhance user experience and make your app feel faster

Sharp is a high-performance package for resizing and formatting images

Streamline your development and deployment processes

Programming is a difficult skill to master and requires great perseverance to get good at. The grind can be too much at times — remember, if something is hard, it’s worth doing, as nothing good comes easy.

Expectations for entry-level programmers

Mermaid.js is a simple markdown-like script language for generating charts from text via JavaScript

A comprehensive roadmap to becoming a proficient web developer

Peaks.js is a client-side JavaScript component to display and interact with audio waveforms in the browser

Selectors are a powerful tool to optimize state selection and enhance performance in your React and Redux apps.

Here are my bets on the programming trends

Fetch data in React applications using the power of React Hooks

Write less code, but better code

Hooks can save you time and improve the quality of your code

You can only become a great developer if you're willing to put effort into it