Learn how to create a custom weather Chrome Extension using the Modern Web Guidance extensions skill and Chrome DevTools for agents to boost a coding agent like Antigravity. By combining best-practice context with automated debugging in the browser, you can eliminate the manual friction of extension development. After the agent handles the initial code generation, you can prompt it to iterate on features, such as adding a multi-day forecast. Set up these tools in your workflow and streamline how you build and test browser extensions. Chapters: 00:00 - Introduction 00:44 - Add the Modern Web Guidance extensions skill 01:38 - Install Chrome DevTools for agents 02:06 - Configure the MCP server capabilities 02:43 - Prompt the AI agent to generate code 03:36 - Test the extension in the browser 03:52 - Iterate and add a three-day forecast Resources: Setup guide → https://goo.gle/4fRlVW3 Modern Web Guidance → https://goo.gle/3TGRI4H Chrome DevTools for agents → https://goo.gle/3UetfUs Watch more Developer Mode → https://goo.gle/dev-mode Subscribe to Chrome for Developers → https://goo.gle/ChromeDevs #ChromeForDevelopers #Chrome #Antigravity Speaker: Milica Mihajlija Products Mentioned: Chrome