Studio - AgentScope Java

agentscope-extensions-studio integrates Agents with AgentScope Studio: every Agent invocation is pushed to Studio for visual debugging, trace replay, and human-in-the-loop input.

When to use

You want to inspect event streams, reasoning, and tool calls in Studio during development.
You need to issue requestUserInput from Studio and let a real user respond.

Add the dependency

<dependency>
    <groupId>io.agentscope</groupId>
    <artifactId>agentscope-extensions-studio</artifactId>
    <version>${agentscope.version}</version>
</dependency>

Quickstart

import io.agentscope.core.studio.StudioManager;
import io.agentscope.core.studio.StudioMessageHook;

// 1) Initialize Studio connection (HTTP + WebSocket)
StudioManager.init()
    .studioUrl("http://localhost:8000")
    .project("MyProject")
    .runName("experiment_001")
    .initialize()
    .block();

// 2) Attach StudioMessageHook so messages are pushed to Studio
ReActAgent agent = ReActAgent.builder()
    .name("Assistant")
    .model(model)
    .hook(new StudioMessageHook(StudioManager.getClient()))
    .build();

// 3) Use the Agent normally; Studio mirrors the conversation
agent.call(msg).block();

What Studio gives you

Message push: every user / assistant / tool message is mirrored to Studio.
Traces: Studio organizes events into a trace tree per runName.
Human-in-the-loop: via StudioUserAgent or requestUserInput, Studio’s UI prompts a real user to fill in input before execution continues.

API overview

Class	Purpose
`StudioManager`	Singleton entry point — initialize and access clients
`StudioConfig`	URL / project / runName configuration
`StudioClient`	HTTP client for events, messages, and run registration
`StudioWebSocketClient`	WebSocket client for inbound commands (e.g. user input)
`StudioMessageHook`	A `Hook` for `ReActAgent` that auto-pushes `Msg`
`StudioUserAgent`	”Human-played” Agent that blocks on Studio user input

When to disable

In production, you usually don’t want this hook attached (every call writes to Studio). Gate it via Spring profile or @ConditionalOnProperty:

@Bean
@ConditionalOnProperty("agentscope.studio.enabled")
StudioMessageHook studioHook() {
    StudioManager.init().studioUrl(url).project(project).initialize().block();
    return new StudioMessageHook(StudioManager.getClient());
}