androidx.a2ui.model.protocol

The unified interface for all messages sent from the A2UI client to the A2A server.

Provides environment access, dynamic payload evaluation, and function execution capabilities within the scope of a specific component.

Represents an inline catalog that can be advertised inside A2uiClientCapabilities.

The unified interface for all messages sent from the A2A server to the A2UI client.

Defines an A2UI component user interaction.

Represents the client capabilities advertisement sent to the agent during system initialization.

Represents the client data model synchronization payload sent to the agent.

Represents a client-side execution or validation error reported to the server.

Represents a client event message to be sent to the server.

Represents a single UI component's payload.

Creates a new surface instance on the client.

Parses JSON pointer strings (RFC 6901) into segments.

Destroys an existing surface and frees its associated resources.

Defines an event action triggered by a user interaction to be sent to the server.

Defines a local component function execution action triggered by a user interaction.

Updates or replaces components in the surface's registry, which can include modifying static component properties (e.g., text, colors) or changing structural layout templates.

Updates the data model of a surface.

Common constants used across the A2UI protocol data models.

Base class for all A2UI protocol and execution errors.

Thrown for any client-side runtime or execution failures (such as dynamic binding or function evaluation failures) that should be reported to the agent and are not structural validation errors

Thrown when an incoming JSON payload from the server structurally violates its defined A2uiSchema.