Google for Developers India

Give your coding agent best practices for HTML-in-Canvas. An agent using Modern Web Guidance sets `content="drawable"` on the canvas, places the HTML elements inside, and marks the inner HTML elements as drawable. It also supplies a fallback for unsupported browsers. Install it today to get started → goo.gle/mwg

Unit tests check your code deterministically. But what happens when an LLM agent calls your WebMCP tools? 🎲 As Maud Nalpas explains, agent behavior varies. That's where evals come in! We built an experimental WebMCP Eval CLI tool to help you track pass rates and debug agent trajectories across multiple runs. Have you tried running evals on your WebMCP tools?

Install two key updates to modernize extension builds with @antigravity: 1️⃣ Modern Web Guidance to share best practices directly with your coding agent 2️⃣ Chrome DevTools for agents, which allows your agent to install and test extensions in a real Chrome browser Write your prompt and enjoy smooth sailing for your extensions development ⛵ Check it out → goo.gle/4Ba886J

Your prompt: "Add a modal that smoothly slides into view and fades out when closed." Unguided coding agent: Custom <div>, z-index: 9999, and JS setTimeout unmount hacks. Guided coding agent: Native <dialog> with @ starting-style, overlay, and allow-discrete transitions. Bring current best practices to your agent workflow with Modern Web Guidance → goo.gle/mwg

Clicking a link in a single-page app doesn't trigger a full page load. That's why it's tricky to measure. Chrome DevTools now analyzes these soft navigations in Performance Insights, alongside Live Metrics and trace views → goo.gle/4i2xbRL

Important updates for the Email Verification origin trial, including a new dedicated docs section → goo.gle/4s5Y2Qb 📱 Chrome for Android support enabled (Settings > Addresses and more > Verified Email) 🔑 Third-party origin trial support for embedded identity SDKs (same-site issuer requirement) 🛡️ JWKS signature validation guidance for optional `kid` claims 🔤 Strict exact-case email claim matching coming in Chrome 156 🏷️ Header standardized to 'Sec-Fetch-Dest: email-verification'

The Split View API is here! Arriving in Chrome 155 and developed in close collaboration with Mozilla and browser vendors in the WebExtensions Community Group, this API integrates directly into the browser.tabs namespace without requiring any extra manifest permissions → goo.gle/47fdSOW

Side-by-side test for building dialogs: standard agent vs. agent with Modern Web Guidance 🏁 Both generate similar UIs, but the guided version skips four separate event listeners in favor of `commandfor` and `command` attributes, with less code overall. Which approach would you rather maintain in your codebase? → goo.gle/mwg

Say goodbye to "Replay XHR" in DevTools and hello to "Resend" 👋 Instantly refire web requests while preserving all headers, cookies, and payloads. Or choose "Edit and Resend as Fetch" if you want to modify them. Check out the full What's New in DevTools video for all the latest updates → goo.gle/4hPB1MQ

Teach your coding agent to write scroll-driven animations with Modern Web Guidance → goo.gle/mwg See how Modern Web Guidance helps your coding agent build resilient scroll animations that won't break on different screen sizes.

Loved scroll-driven animations? Meet their scroll-triggered sibling. Instead of tying animation progress directly to the scrollbar, you can trigger full time-based CSS animations when crossing a scroll offset. See how to build them with pure CSS → goo.gle/4dhcvmh

Ensure your coding agent creates more accessible, progressively enhanced web forms, with Modern Web Guidance. Watch our side-by-side comparison to discover how Modern Web Guidance skills help agents handle: ⌨️ Adding the Enter key hint attribute 🏷️ Correct autocomplete values 🎨 Autofill styling as a progressive enhancement See it in action → goo.gle/mwg