WebKit blog breaks down what’s new with Safari 27 for developers, including MCP support
Following the rollout of Apple’s 2027 system releases, the WebKit blog has now published an in-depth look at what’s new with Safari 27.0. Here are the details. more…
Apple's WebKit blog has recently published a comprehensive overview of the latest enhancements in Safari 27.0 for developers. The key feature highlighted is the Safari MCP (Multi-Process Controller) server, which empowers AI agents to control browser windows, streamlining the development process. To activate the Safari MCP server, users must navigate to Safari Settings > Developer and enable "Allow remote automation and external agents."
This feature only becomes accessible after enabling "Show features for web developers" in Safari Settings > Advanced.
The Safari MCP server offers a range of capabilities for developers, including the ability to view how code renders in Safari, verify user states in forms, compare computed styles and layouts, test for accessibility issues, analyze performance metrics, and much more. Crucially, the server operates solely on the developer's local machine, with no network calls of its own.
It does not access personal data stored in Safari, and any captured data is directly sent to the agent being utilized, rather than being shared with Apple.
In addition to the Safari MCP server, Safari 27.0 addresses nearly 850 issues, a significant improvement from the 525 fixes announced during WWDC. Resolved issues cover various aspects, such as accessibility, CSS, encoding, fonts, forms, MathML, networking, WebRTC, and more. The update also introduces support for immersive environments, enabling developers to integrate them into visionOS experiences.
Furthermore, it expands the HTML model element to iOS, iPadOS, and macOS, allowing websites to embed interactive 3D models directly within web pages, similar to images or videos.
Another notable addition is the Scroll Anchoring feature, which prevents webpages from jumping unexpectedly when images load above the viewport. The update also includes numerous enhancements to the Web Inspector, such as inline color-contrast information, improved visibility of redirect chains, and better layout debugging tools.
The post concludes with an exhaustive list of improvements, new features, and updates across WebAssembly, WebGPU, JavaScript, CSS, WebRTC, media playback, Web Extensions, WKWebView, Service Workers, and more. To delve into the full details of the Safari 27.0 release, interested developers can refer to the full post on the WebKit blog.
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