Developed a robust string parameter validation feature for the Jenkins MCP Server Plugin repository, focusing on improving backend reliability and reducing configuration errors. The work involved enhancing the plugin’s parameter handling logic using Java, ensuring that only valid string inputs are accepted during job configuration. Collaborated closely with another contributor throughout the pull request process, demonstrating effective teamwork and code review practices. Emphasized code quality and thorough testing to maintain plugin stability. This contribution addressed a key area of input validation within Jenkins plugin development, resulting in more predictable server behavior and a smoother experience for users configuring jobs with string parameters.