Configuration 

In the Extension Manager (ke_search_ai), open the category AI-generated results (RAG):

• Enable AI-generated results: Turn the feature on.
• LLM: API URL (default: https://api.mistral.ai/v1/chat/completions), API key, model (default: mistral-small-latest), answer language (e.g. de), max response tokens.
• Embeddings: Embedding API URL (default: https://api.mistral.ai/v1/embeddings), API key, model (default: mistral-embed).
• Retrieval: Top K (number of chunks, e.g. 5–10), minimum similarity score (0–1, default 0.4; 0 = no filtering; typical 0.4–0.6 to exclude irrelevant hits), max characters per chunk.
• Cache: Cache lifetime in seconds for the AI answer per search term (0 = no cache).
• Logging: Log level (default: WARNING). See Debugging.

API keys can be configured in the Extension Settings (Extension Manager → ke_search_ai). For deployment, you may use env:VARIABLE_NAME as the value (e.g. env:MISTRAL_API_KEY) to read from the environment.

YourVendor\YourExtension\EventListener\ModifyAiSystemPrompt:
  tags:
    - name: event.listener
      identifier: 'yourExtensionModifyAiSystemPrompt'
      event: Tpwd\KeSearchAi\AiGeneratedResults\Event\ModifyAiGeneratedSystemPromptEvent

public function __invoke(ModifyAiGeneratedSystemPromptEvent $event): void
{
    $event->setSystemPrompt(
        $event->getSystemPrompt() . ' Only use a maximum of two sentences.'
    );
}