DeckAssistant is an AI-powered program that acts as an assistant for Stream Deck. It can process text selected in any application with the click of a button or prompt the user to ask a question. Users can select any text in any application, press a button, and let the AI process it. Additionally, it allows users to have free-form prompts where they can ask the AI a question. DeckAssistant includes example prompts, but users can also set any prompt they want. Users simply need to create an account, copy the API token from the dashboard, install the Stream Deck plugin, add a button, paste the API token, and press the button to access the AI feature. Overall, DeckAssistant makes using Stream Deck more convenient and efficient.