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I built a Chrome extension called Margin — a news reader that lives in the browser's side panel and shows one bite-sized story at a time, instead of an infinite-scroll feed. This is a build log: the decisions, the constraints that pushed back, and a couple of things I had to solve in slightly unusual ways. Why the side panel Chrome shipped chrome.sidePanel in MV3 a while back and most uses I saw were utility tools — note-taking, translation helpers. Nobody was using it for content consumption. News felt like a good fit: a side panel that stays open next to whatever you're working on, where you tap through headlines in a couple of minutes without leaving the page. The reading model is intentionally narrow: one card, one headline, one short summary, tap to read the full article at the source . No infinite scroll, no algorithmic feed. If you've used InShorts, the shape will be familiar. The stack Preact + Vite + @crxjs/vite-plugin . Preact because the side panel is a small UI surface and I didn't want React's weight for what's essentially a card stack and a settings screen. @crxjs/vite-plugin handles the MV3-specific build wiring (manifest generation, service worker loader, HMR for the extension context) that would otherwise be a lot of manual plumbing. The constraint that shaped onboarding chrome.sidePanel.open() requires a user gesture . You cannot call it from a background service worker on install — Chrome will throw. That one constraint shaped the whole first-run experience. My first instinct was "just auto-open the panel on install so people see it immediately." Doesn't work. The fix ended up being two-pronged: On chrome.runtime.onInstalled with reason === 'install' , open a real browser tab with a short walkthrough (find the icon → pin it → open the panel). The button on that page calls sidePanel.open() — valid, because the click is the gesture. The first time the panel itself is opened, show an in-panel welcome screen before onboarding, nudging the user to pin

Anthropic recently reported that Claude now handles around 95% of its internal analytics requests, letting employees query business data independently instead of relying on data teams. The company attributes this result less to advances in models and more to data governance, semantic definitions, and operational discipline. By Renato Losio

Debugging authentication in web apps is painful. You need to test the same flow as five different user types — new visitor, returning user, admin, expired session, logged-out — and the easiest way is to constantly create new accounts or clear all your cookies and start over. There's a faster way. These five techniques use direct cookie manipulation to simulate any auth state without touching your database or creating dummy accounts. I use CookieJar for most of this — a free Chrome extension built natively on MV3 that gives you a proper UI for cookie editing. But I'll show you the underlying Chrome DevTools method too, so you understand what's actually happening. 1. Simulate a Logged-Out State Without Clearing Everything The naive approach: clear all cookies and reload. The problem: you just nuked your dev server session token, your local storage flags, your Stripe test mode cookie, and everything else you carefully set up. The targeted approach : identify and delete only the session/auth cookie. Most session cookies are named session , sid , auth_token , _session_id , or something close. In DevTools: Application → Cookies → [your domain] → find the session cookie → right-click → Delete With CookieJar: open the extension, search session , click the trash icon next to just that cookie. Your dev environment stays intact. The user state resets to logged-out. 2. Test the "Returning User" vs "New User" Path Without a Second Account Session cookies tell the server you're authenticated. But many apps use separate cookies to track whether a user has seen the onboarding flow, completed setup, or visited before. Look for cookies like onboarding_complete , setup_done , first_visit , or custom flags in your app code. To test the new user experience: Export your current cookies (CookieJar → Export → JSON format, or copy from DevTools) Delete the specific onboarding/first-visit flag cookie Reload and test the new user path Re-import or re-set the cookie to restore your state This

On the new episode of Equity, we discussed what actually prompted the administration's latest moves against Anthropic, and what this might mean for the AI ecosystem.

There is a class of feature that used to be impossible to ship for free: anything that needed a language model. You wired up an API key, you ate the per-token bill, and every prompt your users typed went off to someone else's server. For a small public tool, that math usually killed the idea before it started. That changed. Recent versions of Chrome ship a language model, Gemini Nano, and expose it to any web page through the Prompt API . The model runs on the user's own machine. No API key. No inference bill. No data leaving the browser. We put this into a real, live tool, a free Mermaid diagram editor where you describe a diagram in plain English and the browser writes the Mermaid code for you. This post is the developer's version of that story: how the API actually works, the code that makes a small on-device model trustworthy, and an honest accounting of what you gain and what you give up. What "AI in the browser" means in 2026 The important word is built-in . This is not WebGPU plus a 4 GB model you download and run yourself. The model ships with Chrome, and you talk to it through a small standard-track JavaScript API. As of Chrome 148, the Prompt API is stable for web pages (it had been available to extensions since Chrome 138). It is the general-purpose member of a growing family of built-in APIs: Prompt API ( LanguageModel ): general natural-language prompting, now multimodal (text, plus image and audio input). Summarizer, Writer, Rewriter, Proofreader : task-specific, text-to-text. Translator and Language Detector : backed by expert models, desktop only. The Prompt API is the one you reach for when you need something the task APIs don't cover, like "turn this description into Mermaid source." So that is the one this post focuses on. The 15-line version Here is the whole happy path. Check availability, create a session, prompt it. // Feature-detect first. Old browsers won't have this at all. if ( ' LanguageModel ' in self ) { const status = await LanguageMod

Jumper isn't the only big name leaving Google DeepMind.

Debugging authentication in web apps is painful. You need to test the same flow as five different user types — new visitor, returning user, admin, expired session, logged-out — and the easiest way is to constantly create new accounts or clear all your cookies and start over. There's a faster way. These five techniques use direct cookie manipulation to simulate any auth state without touching your database or creating dummy accounts. I use CookieJar for most of this — a free Chrome extension built natively on MV3 that gives you a proper UI for cookie editing. But I'll show you the underlying Chrome DevTools method too, so you understand what's actually happening. 1. Simulate a Logged-Out State Without Clearing Everything The naive approach: clear all cookies and reload. The problem: you just nuked your dev server session token, your local storage flags, your Stripe test mode cookie, and everything else you carefully set up. The targeted approach : identify and delete only the session/auth cookie. Most session cookies are named session , sid , auth_token , _session_id , or something close. In DevTools: Application → Cookies → [your domain] → find the session cookie → right-click → Delete With CookieJar: open the extension, search session , click the trash icon next to just that cookie. Your dev environment stays intact. The user state resets to logged-out. 2. Test the "Returning User" vs "New User" Path Without a Second Account Session cookies tell the server you're authenticated. But many apps use separate cookies to track whether a user has seen the onboarding flow, completed setup, or visited before. Look for cookies like onboarding_complete , setup_done , first_visit , or custom flags in your app code. To test the new user experience: Export your current cookies (CookieJar → Export → JSON format, or copy from DevTools) Delete the specific onboarding/first-visit flag cookie Reload and test the new user path Re-import or re-set the cookie to restore your state This

Plus: Gay bars in San Francisco using face scanners, France quits Palantir, Apple plans to change its private email and more.

Anthropic’s Fable/Mythos shutdown is the first real model export-control shock The important AI story this week is not just that Anthropic launched bigger Claude models. It is that the US government then told Anthropic to switch two of them off for foreign nationals — and Anthropic says the practical answer was to disable them for customers while it works through compliance. That is a very different kind of platform risk than rate limits or pricing changes. If you are building on frontier models, model access can now move because of export-control decisions, safety claims, and geopolitical pressure. What happened Anthropic announced Claude Fable 5 and Claude Mythos 5 on June 9. Fable 5 was described as Anthropic’s most capable generally available model, with stronger performance across software engineering, knowledge work, vision, scientific research, and longer complex tasks. Mythos 5 was positioned above that: an upgrade to Claude Mythos Preview, with Anthropic calling out cyber-defence and life-sciences use cases. Three days later, Anthropic published a blunt update: the US government had issued an export-control directive requiring Anthropic to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States — including foreign-national Anthropic employees. Anthropic said the order arrived at 5:21pm ET on June 12, did not include detailed specifics, and that its understanding was that the government believed it had become aware of a jailbreaking method for Fable 5. Anthropic said access to other models was not affected, but the “net effect” was that it had to abruptly disable Fable 5 and Mythos 5 for customers to ensure compliance. Al Jazeera’s follow-up on June 19 frames the downstream effect clearly: allied countries and companies are now being forced to think harder about dependence on US frontier-model access. It also reports that Anthropic had granted roughly 200 institutions across 15 countries access to Claud

For the last 30 years, stopping the flow of cybersecurity-related software has proven to be ineffective. It's unclear why it would work now with Anthropic’s cybersecurity model Mythos.

Just as last week was ending, the US government forced Anthropic to pull its two newest models, Fable 5 and Mythos 5, citing national security concerns after Amazon researchers allegedly found a way to bypass Fable 5’s guardrails. Cybersecurity researchers have since signed an open letter calling the move dangerous, and Anthropic itself noted the same jailbreaks exist in other models. So is […]

Anthropic still can’t distribute Claude Mythos or Fable 5 after running afoul of the Trump administration. But no one can say exactly what the company did wrong.

Biggest AI firms will likely recoil at Bernie Sanders' AI wealth fund.

On today’s episode of Decoder, my guest is Hayden Field, senior AI reporter for The Verge. Often when Hayden comes on the show, it’s because something has gone wrong in the world of AI. Last weekend, that something was a pretty intense mix of Anthropic, the Trump administration, and Anthropic’s new AI model, Fable 5. […]

Days before Anthropic took its most advanced AI models offline, the White House ordered the company to revoke SK Telecom’s access to Claude Mythos over claims of alleged ties to China.

French President Macron and Indian PM Modi raised alarms at the G7 summit that the U.S. could cut off access to American AI overnight — a fear the Anthropic blackout just made real.

Anthropic has joined the Frontier coalition, which received another $915M in pledges to fund carbon removal projects.

Anthropic has spent much of this week fighting to get its newest AI models back online after the Trump administration abruptly ordered the company to cut access for all foreign nationals, including users inside the US and its own employees, forcing Anthropic to block access to Fable 5 and Mythos 5 for everyone. "To my […]

AI models with advanced hacking capabilities will soon be the norm.

Trump administration officials tell WIRED that if Anthropic wants to rerelease Fable 5, it will need to ensure the model's guardrails can't be circumvented. Security experts say that can't be done.