# Service Settings

<figure><img src="/files/nSgNZ6SBom83s76wtbhg" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
To open Service Settings:&#x20;

* From Launcher: Menubar -> Translator -> Double Click on the Service Name
* From Settings: Settings -> Translation Engines -> Click on the Service Name
  {% endhint %}

### Web Scraping

* **Show Browser**\
  Opens a browser window showing the translation page.
* **User Agent**\
  Specifies the browser identity string. (Not recommended to change unless necessary)

### LLM Web

* **Show Browser**\
  Opens a browser window showing the LLM translation page.
* **Combine Prompt with Source Text**\
  When enabled, the source text will be merged with the custom prompt.
* **Prompt**\
  The base prompt used by the LLM.

### LLM API

* **API Key**\
  Your personal API key used to authenticate with the LLM service. Keep this private and secure.
* **Model**\
  The name of the LLM model you want to use.
* **System Prompt**\
  A base instruction for the AI model that sets the context or behavior for all translations.
* **Temperature**\
  Controls the randomness in the output. Lower values produce more focused and deterministic results, while higher values produce more creative output.
* **Max Tokens**\
  The maximum number of tokens (words/characters) the model can generate in a single response. Higher limits may increase costs.
* **Top P**\
  An alternative method to control creativity. Works together with temperature - lower values limit responses to more likely outcomes.
* **Frequency Penalty**\
  Reduces the likelihood of the model repeating the same phrases. Higher values result in less repetition.
* **Presence Penalty**\
  Encourages the model to introduce new topics. Higher values result in more diverse content.


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# 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://docs.vntranslator.com/user-guide/machine-translation/service-settings.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.