Developed a Secure File Access Path Validation feature for the modelcontextprotocol/servers repository, focusing on backend development and security best practices using TypeScript. The solution enforced directory whitelisting and implemented robust protections against symlink and path traversal vulnerabilities, ensuring file access remained restricted to authorized locations. By addressing edge-case issues with symlink and path prefix handling, the work strengthened data isolation in multi-tenant environments and enhanced auditability of file operations. The path validation logic was designed for maintainability and improved test coverage, providing a reliable foundation for secure filesystem access and reducing the risk of unauthorized data exposure in production deployments.