Apple opens up Siri to app developers through an API in iOS 10
Apple announced today that it will be opening up Siri to third-party developers through an API, giving outside apps the ability to activate from Siri's voice commands, and potentially endowing Siri with a wide range of new skills and datasets.
Context & Ripple Effects
Weeks after The Information reported Apple was preparing a Siri SDK for WWDC alongside work on an Amazon Echo rival, today's iOS 10 announcement makes it official: outside apps can now be activated by Siri's voice commands through an API. It is the first crack in Siri's closed skill set since launch.
The move also reads as the opening chapter of a decade-long arc in this coverage: Apple Intelligence's 2024 relaunch shipped its own third-party app API, Apple is now testing upgraded App Intents with Uber, WhatsApp, and YouTube, and Bloomberg reports plans for Siri to run any AI service via App Store apps in iOS 27.
First-order effects
- Third-party developers gain a direct path into Siri: their apps can be triggered by voice commands, immediately widening the assistant's skills and datasets beyond what Apple built itself.
- Apple's own bundled capabilities lose exclusivity inside Siri — any developer whose app hooks into the API competes for the same voice-command moments.
Second-order effects
- App makers gain a new optimization battleground: ranking inside Siri's responses, not just the App Store, becomes a distribution channel for whoever builds the best voice integrations.
- Amazon's Echo, named in the same reporting as an Apple rival project, faces a competitor that can leverage hundreds of millions of existing iPhone users rather than selling separate hardware.
Third-order effects
- If the pattern holds across the decade of coverage here, the assistant consolidates into an operating layer where Apple routes actions and AI services rather than owning them — culminating in the reported iOS 27 plan to drop ChatGPT as exclusive partner.
- That structure makes the assistant a gatekeeper market: access rules, App Intents standards, and Apple's ad push in search results would govern how apps reach users by voice.
The trend: Voice assistants are evolving from single-vendor command tools into third-party action and AI-distribution layers, with Apple's API cadence from iOS 10 to iOS 27 marking each widening.