Package com.google.adk.apps

Class App

java.lang.Object

com.google.adk.apps.App

public class App
extends Object

Represents an LLM-backed agentic application.

An App is the top-level container for an agentic system powered by LLMs. It manages a root agent (rootAgent), which serves as the root of an agent tree, enabling coordination and communication across all agents in the hierarchy. The plugins are application-wide components that provide shared capabilities and services to the entire system.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	App.Builder	Builder for App.

Method Summary

Modifier and Type	Method	Description
static App.Builder	builder()
@Nullable ContextCacheConfig	contextCacheConfig()
@Nullable EventsCompactionConfig	eventsCompactionConfig()
String	name()
List<? extends Plugin>	plugins()
@Nullable ResumabilityConfig	resumabilityConfig()
BaseAgent	rootAgent()
Optional<Node>	rootNode()	Returns the workflow node the app runs, or empty when it runs an agent tree.
App.Builder	toBuilder()	Returns a builder holding this app's settings.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

name

public String name()

rootAgent

public BaseAgent rootAgent()

rootNode

@Experimental
public Optional<Node> rootNode()

Returns the workflow node the app runs, or empty when it runs an agent tree. When it runs a node, rootAgent() returns a NodeViewAgent that stands in for it.

plugins

public List<? extends Plugin> plugins()

eventsCompactionConfig

public @Nullable EventsCompactionConfig eventsCompactionConfig()

contextCacheConfig

public @Nullable ContextCacheConfig contextCacheConfig()

resumabilityConfig

@Experimental
public @Nullable ResumabilityConfig resumabilityConfig()

toBuilder

public App.Builder toBuilder()

Returns a builder holding this app's settings. For an app that runs a node, the builder holds rootNode() rather than the agent that stands in for it. To switch between a root agent and a root node, also clear the current one with null.

builder

public static App.Builder builder()