# Open

The following example demonstrates how to request a browser instance, navigate to a webpage, and close the browser:

```csharp
using BrowserService svc = new("YOUR CLOUDBROWSER.AI TOKEN");
        
//Request Cloud Browser AI to open a browser
//using default settings
var rp = await svc.Open().ConfigureAwait(false);

if (rp.Status == ResponseStatus.Succes) {
    Console.WriteLine("Browser requested");
} else { 
    Console.WriteLine("Error requesting browser: {0}", rp.Status.ToString());
    return;
}

var browser = await Puppeteer.ConnectAsync(new ConnectOptions {
    BrowserWSEndpoint = rp.Address,
    DefaultViewport = null,
    AcceptInsecureCerts = true,
    SlowMo = 0
}).ConfigureAwait(continueOnCapturedContext: false);

Console.WriteLine("Browser connected");

var page = (await browser.PagesAsync().ConfigureAwait(false))[0];

await page.GoToAsync("http://www.cloudbrowser.ai").ConfigureAwait(false);
Console.WriteLine("Web visited");

await Task.Delay(5000).ConfigureAwait(false);

//You can close the browser using puppetter or CloudBrowser AI api
//await svc.Close(rp.Address).ConfigureAwait(false);
await browser.CloseAsync().ConfigureAwait(false);

Console.WriteLine("Browser closed");
```

***

#### **Full example**

{% @github-files/github-code-block fullWidth="false" %}

#### **How It Works**

1. **Initialize the Client**:\
   Create an instance of `BrowserService` using your API toke
2. **Request a Browser Instance**:\
   Call `svc.Open()` to request a new browser session from the CloudBrowser.AI service.
3. **Connect with PuppeteerSharp**:\
   Use the WebSocket address provided in the response to connect to the browser instance using `Puppeteer.ConnectAsync()`.
4. **Perform Browser Actions**:\
   Interact with the browser via PuppeteerSharp, such as navigating to a webpage or automating tasks.
5. **Close the Browser**:\
   Either use PuppeteerSharp's `browser.CloseAsync()` or CloudBrowser.AI's `svc.Close()` API to terminate the session.

## Open (with parameters)

The following example demonstrates how to request a browser instance with advanced configuration, including custom browser settings, proxy, and a timeout for keeping the browser open.

* **Label**: Set a custom label for the browser instance.
* **Browser**: Choose the browser type (e.g., Chromium or Chrome).
* **KeepOpen**: Set the timeout in seconds for how long the browser should remain open without a Puppeteer connection.
* **Proxy**: Configure proxy settings (host, port, username, password).

```csharp
using BrowserService svc = new("YOUR CLOUDBROWSER.AI TOKEN");

// Request a Cloud Browser instance with advanced settings
var rp = await svc.Open(new() {
    Label = "MyCustomBrowser",  // Custom label for the browser instance
    // Chromium is supported but we recommend Chrome for best stealth
    Browser = CloudBrowserAiSharp.Browser.Types.SupportedBrowser.Chromium,
    KeepOpen = 10 * 60,  // This browser will close after 10 minutes without Puppeteer connection
    Proxy = new() {
        Host = "IP.0.0.0.1",
        Port = "3000",
        Password = "password",
        Username = "username",
    }
}).ConfigureAwait(false);

```

#### **Full example**

{% embed url="<https://github.com/CloudBrowser-AI/CloudBrowserAiSharp/blob/main/samples/OpenAdvanced.cs/Program.cs>" %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://cloudbrowser.gitbook.io/docs/libraries/.net-client/open.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.