WebKit blog breaks down what’s new with Safari 27 for developers, including MCP support

Marcus Mendes· Sep 18, 2026 · 2:18 AM UTC ·4 min read · 0 reactions · 0 comments · 7 views

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TL;DR · WeSearch summary

Safari MCP server among new features Chief among the new features included in Safari 27.0 is the Safari MCP server, which lets AI agents control the browser window to help developers work faster. To enable Safari MCP, developers must go to Safari > Settings > Developer and check “Allow remote automation and external agents.” Apple notes that the Developer pane only appears after users enable “Show features for web developers” under Safari > Settings > Advanced. Here’s Apple on the new feature: Are you developing websites using coding agents?

Key facts

▪Safari MCP server among new features Chief among the new features included in Safari 27.0 is the Safari MCP server, which lets AI agents control the browser window to help developers work faster.
▪To enable Safari MCP, developers must go to Safari > Settings > Developer and check “Allow remote automation and external agents.” Apple notes that the Developer pane only appears after users enable “Show features for web developers” under
▪Here’s Apple on the new feature: Are you developing websites using coding agents?

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Original publisher	9to5Mac
Canonical URL	https://9to5mac.com/2026/09/17/webkit-blog-breaks-down-whats-new-with-safari-27-for-developers-including-mcp-support/
Publication time	Fri, 18 Sep 2026 02:18:35 +0000
Retrieval time	2026-09-18T02:23:45.773Z
Last seen	2026-09-18T02:23:45.773Z
Headline source	Publisher (no WeSearch rewrite)
Excerpt source	publisher body
Excerpt method	First ~120 words (~800 chars) of extracted publisher body, fair-use limited.
Summary	WeSearch · cerebras-chat (WeSearch summarizer)
Summary source text	contentText
Citation coverage	Summary is a WeSearch-generated derivative; primary citation is the original publisher URL.
Cluster	5kOPlMSGb4e3 · 1 stories
Cluster logic	Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison.
Ranking reason	Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking.
Publisher visit	Yes — open original
Substitutes article?	No — link-out required for full text

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Unknown

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Indexing	May the item be indexed (stored, ranked, made findable)?	Allowed
Snippet	May a short excerpt of the publisher's text be shown?	Allowed
AI summary	May WeSearch generate its own short summary of the article?	Limited
Retrieval / RAG	May the content be exposed for third-party retrieval-augmented generation?	Not asserted
Model training	May the content be used to train AI models?	Not asserted
Commercial reuse	May the content be reused commercially?	Not permitted

Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.

Open original publisher → Source rights JSON → Machine-readable provenance → Rights framework → WESEARCH-STORY-PROVENANCE-V1

Opening excerpt (first ~120 words) tap to expand

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