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The problem: I kept missing big moves on Polymarket because I had no way to see what the biggest traders were betting on in real time. So I built WhaleTrack — a free, no-signup tool that shows you exactly what top Polymarket whales are buying and selling. What it does Live whale activity feed — see the last 40 trades from top wallets, updated on refresh Whale leaderboard — P&L, win rate, trade count for the biggest accounts No login, no ads, no fluff — just the data How it works The whole thing is vanilla HTML/CSS/JS deployed on Vercel with two serverless functions: /api/whales.js — hits the Polymarket leaderboard API, fetches position stats for each whale, calculates win rates from closed positions /api/activity.js — pulls recent trades for each whale wallet in parallel, filters out internal combo transactions (no title / zero price), and returns the 40 most recent trades The serverless layer solves CORS — Polymarket's data API doesn't allow browser requests, so everything goes server-side. Tech stack Frontend: Vanilla HTML/CSS/JS (zero dependencies) Backend: Vercel serverless functions Data: Polymarket public data API Deploy: Vercel (free tier) Biggest lesson Filtering bad data is half the work. The raw API returns combo trades and internal transactions that show up as "Unknown Market @ 0¢" — useless noise. Had to figure out which fields to check (title, price > 0) to strip them. Also: win rate calculation is tricky when most whales have unrealized profits. Showing "—" instead of 0% is more honest. Try it WhaleTrack → Also launched on Product Hunt today if you want to show some love: Product Hunt Built this in a weekend. Happy to answer questions about the Polymarket API or Vercel serverless setup.

After weeks of negotiations, the White House permitted Anthropic to restore access to its most advanced AI model for a select group of US companies and government agencies.

We’ve already rounded up the best Philips Hue deals of Prime Day, but if you’re looking for something a little more budget-friendly, Govee’s latest sale is worth checking out. The company has heavily discounted several of its color-changing smart lamps, including the Table Lamp 2 ($53.99, down from $79.99), Floor Lamp Basic ($59.99, regularly $99.99), the […]

Corgi became embroiled in controversy when Papermark accused it of stealing its software. Corgi says it did not, raising new questions about vibe coding.

NYT shifts OpenAI/Microsoft copyright claims after SCOTUS ruling against Sony.

Homes with many phone chargers pay more even when they're not using them.

The hire marks OpenAI's latest push into India, expanding offices, partnerships and hiring.

Foldables, watches and glasses could be on the way from Samsung.

The White House asked OpenAI to delay the rollout of its GPT-5.6 AI models, two weeks after Anthropic had to take its most advanced AI models offline.

Assa Abloy has laid off the majority of staff at Level Home, the smart lock company known for building smart tech into traditional-looking deadbolts, and is folding the business into Kwikset, according to a source familiar with the decision. The Verge obtained exclusive details from a person familiar with the restructuring who requested anonymity as […]

Vercel has released Eve, an open-source framework for building, deploying, and operating AI agents in production. The framework uses a filesystem-based project structure to organize agent instructions, tools, skills, subagents, communication channels, and scheduled tasks, enabling developers to define agent behavior while reducing the amount of supporting infrastructure they need to implement. By Daniel Dominguez

Join us on the livestream at 1 pm ET and ask questions about the aftermath of New Glenn.

Rock weathering may release or draw down carbon dioxide—it depends on the rock.

Michael Webster discusses the rise of headless AI agents and their impact on software delivery pipelines. He shares how massive, AI-generated pull requests create a severe bottleneck for human reviewers and introduce persistent technical debt. Learn how engineering leaders can leverage test impact analysis and automated validation pipelines to verify agentic output without sacrificing stability. By Michael Webster

Save up to $190 on your pass to TechCrunch Founder Summit 2026. Early Bird pricing ends today, at 11:59 p.m. PT, after which rates increase. Register now.

Philips Hue products don’t often see major discounts, which makes this year’s Prime Day deals especially notable. Prices have dropped significantly across much of the company’s smart lighting lineup, with deals on everything from smart bulb starter kits and sleep lamps to smart buttons. In some cases, the lowest prices are available directly from Philips […]

Diagrid has announced the release of Dapr 1.18, introducing what it calls Verifiable Execution, a new set of capabilities designed to bring cryptographic trust, provenance, and tamper-evident execution records to distributed applications and AI agents. By Craig Risi

Welcome to Walmart deals for folks who’d rather not shop at Amazon. These are the best gadget deals at Walmart this Prime Day.

From October this year Samsung will roll out a variety of new paid tiers for access to its SmartThings API, including a $4.99 monthly plan for "non-commercial, individual developers." It won't just be developers that pay the price though. Some more advanced smart home users are likely to fall afoul of the rule change if […]

Qatar has become the place where FIFA experiments with the next generation of football technology. The results are already visible across this year’s World Cup.