--- title: Maybe Don’t Rely on Google’s “Modern Web Guidance” description: Google's Modern Web Guidance (MWG) — a set of LLM skill files meant to help AI coding agents produce accessible, performant, and secure web code — is critiqued... canonical: https://daily.dev/posts/maybe-don-t-rely-on-google-s-modern-web-guidance--dkm7zne6k twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Maybe Don’t Rely on Google’s “Modern Web Guidance” | daily.dev og:description: Google's Modern Web Guidance (MWG) — a set of LLM skill files meant to help AI coding agents produce accessible, performant, and secure web code — is critiqued... og:url: https://daily.dev/posts/maybe-don-t-rely-on-google-s-modern-web-guidance--dkm7zne6k og:image: https://api.daily.dev/og/posts/dKM7znE6k.png og:image:alt: Maybe Don’t Rely on Google’s “Modern Web Guidance” og:image:width: 1200 og:image:height: 630 og:locale: en --- [Adrian Roselli](https://daily.dev/sources/adrianroselli) [Read post](https://api.daily.dev/r/dKM7znE6k) # [Maybe Don’t Rely on Google’s “Modern Web Guidance”](https://api.daily.dev/r/dKM7znE6k "Go to post") This title could be clearer and more informative.Try out Clickbait Shieldfor free (5 uses left this month). Google's Modern Web Guidance (MWG) — a set of LLM skill files meant to help AI coding agents produce accessible, performant, and secure web code — is critiqued for failing its own promises. A hands-on test using the Antigravity tool with MWG produced an accordion component that broke in Firefox and contained WCAG violations, despite accessibility being listed as a core principle. The fundamental problem: LLMs are non-deterministic, so there is no guarantee the guidance files will even be consulted, let alone followed correctly. The recommendation is to keep investing in deterministic, vetted pattern libraries rather than relying on AI-generated code for accessibility-critical work. [#google-chrome](/tags/google-chrome "Check all #google-chrome posts")[#accessibility](/tags/accessibility "Check all #accessibility posts")[#ai-coding](/tags/ai-coding "Check all #ai-coding posts") May 25•6m read time•From [adrianroselli.com](https://api.daily.dev/r/dKM7znE6k "adrianroselli.com") [](https://api.daily.dev/r/dKM7znE6k "Go to post") Table of contents [Tags](https://api.daily.dev/r/dKM7znE6k "Tags")[Other Posts](https://api.daily.dev/r/dKM7znE6k "Other Posts")[No comments? Be the first!](https://api.daily.dev/r/dKM7znE6k "No comments? Be the first!") 4.9K Impressions3 Upvotes Comment Bookmark Copy Share your thoughtsPost [](https://daily.dev/sources/adrianroselli) [Adrian Roselli](https://daily.dev/sources/adrianroselli "https://daily.dev/sources/adrianroselli") Adrian Roselli is a web developer, accessibility advocate, and expert in web standards. Readers can ... Read more 37 Followers • 203 Upvotes #### Would you recommend this post? 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