MySQLTuner-perl is a single-file Perl script for MySQL/MariaDB/Percona Server performance tuning and advisory. It connects to live database instances, collects metrics via SHOW commands, information_schema, and performance_schema, then provides actionable recommendations for performance, security, and resilience. The tool outputs in multiple formats (console, JSON, YAML, HTML, CSV) and includes advanced features like weighted health scoring (0-100), predictive capacity analysis, CVE vulnerability checking, replication analysis, and AI agent integration via --agent-json or MCP server. The repository enforces strict governance: zero CPAN dependencies in the main script, test-driven development, conventional commits, and automated release processes. Auxiliary scripts handle CVE updates, EOL synchronization, compliance checking, and release generation, all while maintaining high code quality and version consistency.