Testing AI agents is crucial for software development, as it helps build more efficient and reliable systems. Evaluating AI agents requires a deep understanding of testing best practices and methodologies. AI agents are becoming increasingly common across sectors, from customer service to healthcare to finance, but ensuring they perform reliably, efficiently, and ethically is essential. Comprehensive testing improves user experience and builds trust in AI agents, while tools like Galileo help identify and resolve issues with AI models. Testing AI agents presents unique challenges due to their unpredictability and potential for biases, but innovative solutions can manage these complexities. Understanding why an AI agent makes a particular decision is crucial for building trust in AI systems and ensuring they are used ethically. Continuous testing and evaluation support AI agents to remain reliable and effective throughout their lifecycles.