> For the complete documentation index, see [llms.txt](https://docs.vagon.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vagon.io/streams/configurations/launch-parameters.md).

# Launch Parameters

<figure><img src="/files/t3t1KcjKkrxmdxZE7xUc" alt=""><figcaption><p>Stream Configurations - Launch</p></figcaption></figure>

You can set launch parameters for your Streams from Stream Configurations and also via URL Parameters.

URL Parameters will allow you to apply Launch Parameters for each Stream Session. If you are looking for a solution to push parameters for each Visitor (Stream Session), it will be a good fit for you.

If you need to push static parameters for your application (connection port values, screen mode, screen size, etc.), you can directly set those launch parameters via Streams Configurations.

The launch parameters you configured will be applied while your application is running on Vagon Streams.

{% hint style="danger" %}
Launch Parameters may cause initialization issues when they are configured wrong. Be sure that your configuration has been tested locally before applying those parameters to your Vagon Streams experience.
{% endhint %}


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