BotTools / Coding
Modern Web Guidance
Free, open-source skills from Chrome, stewarded with Edge, Firefox and MDN, that give coding agents modern web best practices and browser-support data.
Free tierFree and open source (Apache 2.0)Coding
Modern Web Guidance at a glance
| Category | Coding |
|---|---|
| Pricing | Free and open source (Apache 2.0) |
| Free tier | Yes |
| Pricing checked | 2026-11-11 |
| Official site | developer.chrome.com/docs/modern-web-guidance |
Good for
What Modern Web Guidance is used for
- Give your coding agent expert-vetted guides for modern HTML, CSS and JavaScript, so it uses built-in browser features instead of extra JavaScript.
- Match recommendations to your browser-support targets: the guides include Baseline and browser compatibility data.
- Scan an existing codebase for safe modernization opportunities with /modern-web-guidance (version 1.0 checks a limited set of patterns using static analysis).
- Read the guides yourself as a learning resource.
Modern Web Guidance pricing and key facts
- Version 1.0 (stable) was released on November 10, 2026, after an early preview at Google I/O in May.
- Free and open source under Apache 2.0.
- The GitHub README says it is stewarded by the Google Chrome, Microsoft Edge, Mozilla Firefox and MDN teams; Chrome's blog says Firefox and Edge joined with version 1.0.
- Install from your project folder with npx modern-web-guidance@latest install (update with npx modern-web-guidance@latest update).
- Also installable from the plugin marketplaces of Claude Code, Codex, Cursor, Antigravity, Copilot, WebStorm, Kimi Code and Grok Build.
From the official site, checked 2026-11-11: developer.chrome.com/blog/modern-web-guidance-v1, github.com/GoogleChrome/modern-web-guidance.
Modern Web Guidance FAQ
Is Modern Web Guidance free?
Yes. It is free and open source under the Apache 2.0 licence.
Which coding agents does it work with?
Chrome says it works regardless of model or agent harness. You can install it with the npx CLI or from the plugin marketplaces of Claude Code, Codex, Cursor, Antigravity, Copilot, WebStorm, Kimi Code and Grok Build.
Who makes it?
It started at Google Chrome. The GitHub README says it is now stewarded by the Chrome, Edge, Firefox and MDN teams together with the web community.
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Pricing changes often; confirm on the official site before buying.