Apple Opens Siri AI to All Third-Party Developers With iOS 27.3 Betas

Apple has opened Siri AI to all third-party developers with the latest public and developer betas of iOS 27.3, a move that extends the voice assistant's most advanced capabilities — personal context understanding, on-screen awareness, and natural language commands — beyond Apple's own apps for the first time. The shift matters because Siri AI's power has so far been concentrated inside Apple's ecosystem, while the apps people actually use daily, from Amazon to Yelp, have been locked out of its deepest features.

The expansion covers four platforms simultaneously: iOS 27.3, iPadOS 27.3, macOS 27.3, and visionOS 27.3. Any developer building for those operating systems can now wire their app's content and actions directly into Siri AI through a framework called App Intents (Apple's mechanism that lets Siri execute tasks inside individual apps).

"Today's preview allows any app to bring its content and actions directly into Siri AI by using App Intents, making it easier for all apps to tap into Siri AI's newest capabilities, including personal context understanding, on-screen awareness, natural language, and more," Apple said in a news release for developers. "So people can just ask for help in their own words, and Siri AI carries out any custom action you've built, from checking a delivery to booking a reservation to placing an order."

What can Siri AI already do?

App Intents, in its current form, lets users ask Siri to perform tasks across built-in and some third-party apps. At a basic level, the skill set includes getting directions, playing music, scheduling meetings, sending messages, adding reminders, and finding photos.

The advanced tier is more ambitious. Users can ask Siri to organize an inbox, edit a photo, and analyze the content currently displayed on screen. Siri can also chain several actions into a single request, work across multiple apps at once, and hold a natural back-and-forth conversation with the user to refine a task.

Apple's own applications dominate the fully supported list. According to the ZDNET report detailing the beta rollout, Siri AI fully supports Calendar, Files, Finder, Journal, Mail, Maps, Messages, Music, Notes, Photos, Preview, Reminders, Safari, Shortcuts, and Weather. Third-party apps receive some support today, but their access to advanced features remains limited or, in many cases, unavailable.

That gap is precisely what the 27.3 betas are designed to close. With all developers granted access, Apple offers a concrete example: instead of manually opening a food delivery app such as DoorDash or Grubhub to check or change an order, a user could simply tell Siri to do it.

The timing also aligns with broader market pressure. As ZDNET notes in a related piece, Apple faces mounting pressure to upgrade Siri into a genuine AI agent, and the assistant's waitlist for the Siri AI beta was already removed in iOS 27. Apple is betting that third-party integration is what turns Siri from a command interpreter into an agent that acts across the entire device.

Which apps should adopt it first?

ZDNET's report identifies five third-party apps where full Siri AI integration would deliver immediate, practical value. Each case highlights a category of routine, multi-step manual work that voice-driven automation could eliminate.

Amazon. The report's author uses Amazon on iPhone and iPad to shop, review wishlists, and track deliveries, all of which currently require opening the app and navigating to the right screens. Sample commands under full integration would include:

• "Siri, search for the 512GB 2026 iPad mini on Amazon and add it to my shopping cart."
• "Siri, review my Amazon wishlist for the luggage I recently added and tell me the latest prices."
• "Siri, check the delivery status of the Alexa photo frame I just ordered on Amazon."

None of those actions works today. Full App Intents support from Amazon would change that.

IMDB. For film and television reference, the report describes a workflow that currently demands opening the app, running a search, and digging for specifics such as a rating or a runtime. A single voice request could collapse that into one step: "Siri, search IMDB for the 1935 movie 'The Bride of Frankenstein,' give me the running time, tell me where I can stream it, and add it to my watchlist."

Libby. The library e-book app requires users to manually search across multiple library systems by title, author, or subject, then borrow a title and read it in Libby or, more typically, the Amazon Kindle app. A supported version would accept a query like: "Siri, look in Libby for books about Alan Turing, give me the titles of the ones you find, and tell me which ones are currently available to borrow."

TodayTix. Theater ticketing involves setting a location — New York for Broadway, London for the West End — finding a specific play, and hunting for seats on a given date. The report envisions asking Siri to "look for the play 'Rent' in London, give me the available performances for Dec. 5 through 9, and let me know which seats are accessible in the first 10 rows."

Yelp. Restaurant search currently demands launching the app, querying, and then filtering results by location, price, and rating. Voice integration would allow: "Siri, find the closest Italian restaurants using Yelp and show me ones within a one-mile radius that have earned four stars or higher."

Why this matters

The pattern across all five examples is the same: multi-step, cross-app tasks that currently demand manual navigation could be reduced to a single natural-language sentence. That is the distinction between a voice shortcut and an AI agent, and it is the competitive frontier where Apple, Google, OpenAI, and others are now fighting to own the default interface of the smartphone.

Siri AI already handles advanced, complex, multi-step tasks for built-in apps through App Intents. With every developer now able to adopt the same support in the iOS 27.3, iPadOS 27.3, macOS 27.3, and visionOS 27.3 betas, the report expects broad adoption — and consumers should watch whether major apps like Amazon, Yelp, and IMDB commit, since their participation will determine whether Siri AI becomes a genuine device-wide agent or remains strongest inside Apple's own walls.