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feat(foundations): built-in AI APIs page - #312

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jdevalk merged 4 commits into
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add/built-in-ai
Nov 11, 2026
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jdevalk merged 4 commits into
mainfrom
add/built-in-ai

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@jdevalk

@jdevalk jdevalk commented Nov 11, 2026

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New page from the Modern Web Guidance review: built-in AI APIs (foundations, optional).

In the report I recommended considered for this one; making it a full page per your call, written so the discipline carries the page: availability-first, identical options objects, gesture-gated multi-GB download with progress, the deprecated window.ai.* surface named as dead, structured output via responseConstraint, model output rendered as untrusted text, and a real fallback as a requirement rather than a nicety. Support stated with versions and dates (Chrome/Edge desktop only; Summarizer/Translator since 138 in 2025, Prompt API since Chrome 148; Firefox/Safari absent; hardware floor noted).

Includes: changelog entry (dated 2026-11-11, re-date if it sits), OG image, sign:skill digest. No reciprocal relatedSlug edits — no existing page is adjacent enough to claim one honestly.

Environment note, same as #306: only the new page's own OG image is committed; shared count images need a maintainer npm run assets.

New spec page: on-device Prompt / Summarizer / Translator /
Language Detector APIs (WebML CG drafts; Chrome/Edge desktop only,
Summarizer and Translator since 138, Prompt API since Chrome 148)
as an optional enhancement layer — availability() first, identical
options to create(), gesture-gated download with progress, no
window.ai.*, output treated as untrusted. Changelog entry, OG
image, skill digest. No reciprocal relatedSlug edits: no existing
page is adjacent enough to claim the link.

From the Modern Web Guidance review; included as a full page at
Joost's direction given Chrome's market share.
@cloudflare-workers-and-pages

cloudflare-workers-and-pages Bot commented Nov 11, 2026 •

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Deploying specification-website with  Cloudflare Pages  Cloudflare Pages

Latest commit: c650341
Status:⚡️  Build in progress...

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Riff added 3 commits November 11, 2026 10:56
…ements

Review finding: the 22 GB / 16 GB figures are Chrome's
requirements for Gemini Nano; Translator and Language Detector
use smaller dedicated models. The page lumped all four APIs
under them; the sentence now separates the two groups.
Review finding (MDN/BCD): version 138 is Chrome's Translator
release (June 2025); Edge's Translator arrived in Edge 148
(May 2026). The support sentence now separates the two
browsers instead of implying parity.
# Conflicts:
#	public/.well-known/agent-skills/index.json
#	public/.well-known/agent-skills/specification-website/SKILL.md
@jdevalk
jdevalk marked this pull request as ready for review November 11, 2026 10:05
@jdevalk
jdevalk merged commit 6c71d76 into main Nov 11, 2026
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@jdevalk
jdevalk deleted the add/built-in-ai branch November 11, 2026 10:05
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