Class RemoteA2AAgent

java.lang.Object

com.google.adk.agents.BaseAgent

com.google.adk.a2a.RemoteA2AAgent

public class RemoteA2AAgent
extends BaseAgent

Agent that communicates with a remote A2A agent via A2A client.

This agent supports multiple ways to specify the remote agent:

1. Direct AgentCard object
2. URL to agent card JSON
3. File path to agent card JSON

The agent handles:

• Agent card resolution and validation
• A2A message conversion and error handling
• Session state management across requests

**EXPERIMENTAL:** Subject to change, rename, or removal in any future patch release. Do not use in production code.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	RemoteA2AAgent.AgentCardResolutionError	Exception thrown when the agent card cannot be resolved.
static class	RemoteA2AAgent.Builder	Builder for RemoteA2AAgent.
static class	RemoteA2AAgent.TypeError	Exception thrown when a type error occurs.

Method Summary

Modifier and Type	Method	Description
static RemoteA2AAgent.Builder	builder()
protected io.reactivex.rxjava3.core.Flowable<Event>	runAsyncImpl(InvocationContext invocationContext)	Agent-specific asynchronous logic.
protected io.reactivex.rxjava3.core.Flowable<Event>	runLiveImpl(InvocationContext invocationContext)	Agent-specific synchronous logic.

Methods inherited from class BaseAgent

afterAgentCallback, beforeAgentCallback, canonicalAfterAgentCallbacks, canonicalBeforeAgentCallbacks, close, description, findAgent, findSubAgent, fromConfig, name, parentAgent, parentAgent, rootAgent, runAsync, runLive, subAgents

Methods inherited from class Object

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

Method Details

builder

public static RemoteA2AAgent.Builder builder()

runAsyncImpl

protected io.reactivex.rxjava3.core.Flowable<Event> runAsyncImpl(InvocationContext invocationContext)

Description copied from class: BaseAgent

Agent-specific asynchronous logic.

Specified by:

runAsyncImpl in class BaseAgent

Parameters:

invocationContext - Current invocation context.

Returns:

stream of agent-generated events.

runLiveImpl

protected io.reactivex.rxjava3.core.Flowable<Event> runLiveImpl(InvocationContext invocationContext)

Description copied from class: BaseAgent

Agent-specific synchronous logic.

Specified by:

runLiveImpl in class BaseAgent

Parameters:

invocationContext - Current invocation context.

Returns:

stream of agent-generated events.