How do you make Vincent happy in my sims agents?

To make Vincent happy in My Sims Agents, focus on completing his tasks and fulfilling his requests, such as helping him with his detective work or finding specific items he needs. Engage in friendly interactions and give him gifts that match his interests, like books or gadgets. Additionally, decorate his workspace to align with his preferences, which can boost his mood. Keeping his environment cheerful and productive will also contribute to his happiness.