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

WebKit published an overview of Safari 27.0: the main new feature is a local MCP server giving AI agents (Claude Code, Codex) access to DOM, network requests, screenshots, and console. About 850 issues were fixed, plus immersive environments for visionOS, the <model> element on iOS/iPadOS/macOS, and Scroll Anchoring.

• MCP server runs locally and does not send data to Apple
• About 850 issues fixed versus 525 at WWDC
• <model> element expanded to iOS, iPadOS, and macOS
• Added support for immersive environments in visionOS