Wang Zunjiao developed an AI-powered payment service agent for the google/adk-samples repository, integrating Ant International’s Antom payment APIs to enable secure payment and refund operations through conversational interfaces. Using Python, Wang focused on AI development and payment integration, crafting sample code that supports end-to-end demo scenarios and validates payment workflows. The implementation emphasized secure transaction handling and conversational user experience, accelerating demo readiness for the repository. While no major bugs were addressed, Wang contributed minor stability improvements and collaborated across teams to ensure the solution’s robustness. The work demonstrated depth in AI-driven API integration and practical sample-code engineering.