I would like to discuss a possible security architecture for Siri, Apple Intelligence, and App Intents where permission to invoke an app action is separated from permission for that specific action to become externally effective.
For low-risk actions, existing authorization may be sufficient. However, for higher-consequence actions—such as payments, file export, message transmission, account changes, device control, or other irreversible operations—there may be value in introducing an additional execution-finality boundary.
Problem Space
An AI assistant may be authorized to invoke an App Intent, but that does not necessarily mean every resulting action should immediately become effective.
For example:
Siri may be allowed to invoke a payment-related intent, but not every amount or recipient should necessarily be executable.
An app may expose a file-sharing intent, but a particular file or destination may fall outside the permitted scope.
An AI-generated message may be validly created, but its final transmission may require additional execution-specific validation.
Context, permission, destination, revocation state, or security state may change between intent generation and actual execution.
The proposed distinction is:
Permission to invoke an App Intent
versus
Permission for the specific resulting act to become externally effective
Proposed Architecture
A high-consequence action could first become a Candidate Act and remain in a Non-Effective State.
Conceptually:
Siri / Apple Intelligence
↓
App Intent
↓
Candidate Act
↓
Non-Effective State
↓
Protected Validation
↓
Scoped Execution Authority
↓
Finality Sink Verification
↓
External Effect
If validation fails, expires, is revoked, is replayed, or becomes ambiguous:
Default Denial → No External Effect
Short Definitions
Candidate Act
The specific operation proposed by Siri, Apple Intelligence, or an app before it is allowed to create an external consequence.
Non-Effective State
A state in which the operation may be prepared, inspected, or evaluated but cannot yet produce its intended external effect.
Protected Validation
A validation step checking execution-relevant conditions such as app identity, user authorization, purpose, destination, scope, freshness, limits, revocation state, or device security state.
Scoped Execution Authority
Authority limited to the specific validated action rather than a broadly reusable permission.
Finality Sink
The consequence boundary where the action becomes externally effective—for example, a network transmission, file release, payment commit, database change, or physical-device action.
Why This Could Be Useful
This architecture could provide:
separation of AI decision-making from final execution authority;
fail-closed behavior for invalid or uncertain actions;
resistance to replay or stale authorization;
action-specific rather than broadly reusable authority;
validation closer to the actual consequence boundary;
stronger control for increasingly autonomous AI workflows.
This would be intended as an optional mechanism for higher-consequence actions, not as a replacement for App Intents, existing user authorization, entitlements, sandboxing, or other Apple security mechanisms.
Possible Interoperability Relevance
This question may also become relevant as operating-system interoperability requirements evolve, including in the European Union under the Digital Markets Act.
As third-party AI assistants and services gain deeper interoperability with operating-system features, there may be a need to distinguish between allowing an interoperating service to request an action and allowing that specific action to cross the final consequence boundary.
A device-side execution-finality mechanism could potentially provide a technical middle layer: third-party AI services could request interoperable actions, while the operating system retains a neutral protected mechanism for validating the specific action immediately before it becomes externally effective.
This may help explore how broader interoperability and strong device-side security could coexist without requiring unrestricted execution authority for either first-party or third-party AI assistants.
I would be interested in whether Apple considers this type of consequence-boundary enforcement compatible with existing or future App Intents and interoperability architectures.
Questions for Apple Engineers and Developers
Does App Intents currently provide a supported mechanism for maintaining an action in a non-effective state until execution-specific authorization is verified?
Where would Apple consider the correct enforcement point for such validation: App Intents, the host application, an OS-mediated service, or the actual consequence boundary?
Is there an existing Apple framework or security primitive intended to provide this kind of action-specific, pre-effectuation execution authority?
Would this model be relevant as Siri and Apple Intelligence gain the ability to perform more cross-app and agentic actions?
Could an OS-mediated finality mechanism also provide a common security boundary for first-party and interoperating third-party AI assistants?
I am particularly interested in understanding whether this should be considered an App Intents implementation pattern, an operating-system security concern, or a broader architectural mechanism for secure AI interoperability.
