# Use the Web Interface

Supported in ADKPython v0.1.0TypeScript v0.2.0Go v0.1.0Java v0.1.0

The ADK web interface lets you test your agents directly in the browser. This tool provides a simple way to interactively develop and debug your agents.

Caution: ADK Web for development only

ADK Web is ***not meant for use in production deployments***. You should use ADK Web for development and debugging purposes only.

Key features of the ADK web interface include:

- **Chat interface**: Send messages to your agents and view responses in real-time
- **Session management**: Create and switch between sessions
- **State inspection**: View and modify session state during development
- **Event history**: Inspect all events generated during agent execution
- **Visual Builder**: Design agents visually with a drag-and-drop workflow editor and an AI-powered assistant (Python only, [learn more](/visual-builder/))

## Start the web interface

Use the following command to start the ADK web interface:

```shell
adk web
```

```shell
npx adk web
```

```shell
go run agent.go web api webui
```

Make sure to update the port number.

With Maven, compile and run the ADK web server:

```console
mvn compile exec:java \
 -Dexec.args="--adk.agents.source-dir=src/main/java/agents --server.port=8000"
```

With Gradle, the `build.gradle` or `build.gradle.kts` build file should have the following Java plugin in its plugins section:

```groovy
plugins {
    id('java')
    // other plugins
}
```

Then, elsewhere in the build file, at the top-level, create a new task:

```groovy
tasks.register('runADKWebServer', JavaExec) {
    dependsOn classes
    classpath = sourceSets.main.runtimeClasspath
    mainClass = 'com.google.adk.web.AdkWebServer'
    args '--adk.agents.source-dir=src/main/java/agents', '--server.port=8000'
}
```

Finally, on the command-line, run the following command:

```console
gradle runADKWebServer
```

In Java, the web interface and the API server are bundled together.

Once started, the server prints the access URL to the console. Open it in your browser to use the web interface:

```shell
+-----------------------------------------------------------------------------+
| ADK Web Server started                                                      |
|                                                                             |
| For local testing, access at http://localhost:8000.                         |
+-----------------------------------------------------------------------------+
```

## Common options

Here are some commonly used options for the `adk web` command. Run `adk web --help` to see all available options.

| Option                   | Description                        | Default                |
| ------------------------ | ---------------------------------- | ---------------------- |
| `--port`                 | Port to run the server on          | `8000`                 |
| `--host`                 | Host binding address               | `127.0.0.1`            |
| `--session_service_uri`  | Custom session storage URI         | In-memory              |
| `--artifact_service_uri` | Custom artifact storage URI        | Local `.adk/artifacts` |
| `--reload/--no-reload`   | Enable auto-reload on code changes | `true`                 |

For example:

```shell
adk web --port 3000 --session_service_uri "sqlite:///sessions.db"
```