Developed a JSON Schema for the microsoft/json-schemas repository to standardize configuration and validation of testing tools used with Teams applications. Focused on schema definition and configuration management, the work established a structured approach for specifying test tool setups, enabling automated validation and reducing configuration errors. By providing a single source of truth for test configurations, the schema streamlines onboarding for QA engineers and supports more consistent CI/CD integration. The solution leverages JSON to define validation rules, ensuring reliable and repeatable test environments. This contribution addressed the need for standardized test configuration, improving both setup efficiency and ongoing maintenance for Teams app testing.