Apple opens Siri AI cross-app capabilities to third-party developers

In the early hours of November 4, 2026, Apple updated its developer documentation to announce that a new Developer Preview rolling out with the iOS 27.3, iPadOS 27.3, macOS 27.3, and visionOS 27.3 betas opens Siri AI to all developers. Any developer can now use App Intents to bring their app's content and actions into Siri AI, making those apps callable from Siri, with the exact scope depending on each platform beta. Later that same day, The Verge reported that the capability launched with the iOS 27.3 update can be integrated into "all apps," letting Siri AI draw on a user's personal context, process natural-language prompts, and use on-screen awareness to perform actions across third-party apps. Previously Siri could mainly answer general questions; now it can carry out operations inside third-party apps directly. IT Home, citing 9to5Mac, described the feature as Siri AI's "App Skills." Under this model an app teaches Siri what its actions are and how to chain them into multi-step tasks. The report gave the example of asking Siri to send a pair of favorite sneakers to a partner through a particular chat app: Siri would look up the saved item, identify who the partner is, find them in the contacts list, and send the sneakers through the designated app, completing a flow that used to require switching between several apps. Another change is that users no longer always need to name the app explicitly. If a ride-hailing app's Live Activity is running, for instance, a request to "change the pickup address" can be resolved by Siri based on the current context. The capability is being delivered with iOS 27.3, macOS 27.3, and the accompanying system updates, and the new software remains in developer beta, with the actual coverage to be verified once apps begin integrating it.