An independent continuation of the `rtuin/mcp-mermaid-validator` project, this Model Context Protocol (MCP) server enables large language models (LLMs) to effectively validate and render Mermaid diagrams. It addresses previous limitations, including a critical fix for WSL stdin compatibility, ensuring robust performance across various environments. By integrating with the Mermaid CLI, it processes diagram syntax, provides validation feedback, and outputs rendered PNG images, making it a reliable tool for enhancing AI interactions with visual documentation.