Chrome's developer documentation, dated November 14, describes a tool called Modern Web Guidance. It is a set of skills, meaning add-on instructions for AI coding agents. The page says they put web platform expertise, best practices and browser compatibility data into the agent. Install steps are given for Claude Code, Copilot CLI and Antigravity CLI. The page calls one command, npx modern-web-guidance@latest install, the recommended route. A second command uses Vercel's Agent Skills.
The page lists sample prompts. They ask an agent to build a tab bar with CSS Anchor Positioning, swap old modal windows for the dialog element, set up passkey login, or improve its INP and LCP speed scores. It also links a codelab and a guide to using the skills with Chrome DevTools for agents. The page does not say how the skills change what an agent writes. It gives no test results, no pricing and no names of other browser makers or groups involved.
For teams that write web code with AI agents, the page offers a Chrome-published way to steer those agents toward current web features. The codelab also covers setting Baseline browser targets, which is a way to state which browsers the code should support.