Worked on the confluentinc/ksql repository to deliver OAuth static token authentication support for the KSQL CLI, focusing on secure integration with OAuth-protected KSQL servers. Developed the StaticTokenCredentials class in Java to manage bearer tokens securely, and updated CLI options and credential handling to accommodate OAuth-based authentication workflows. This feature enables users to authenticate with bearer tokens directly from the CLI, enhancing security and simplifying deployment in environments requiring OAuth. The work leveraged skills in authentication, CLI development, and security, laying a foundation for more robust token-based authentication mechanisms within the KSQL ecosystem without introducing any bug fixes during the period.