{"repo":"rtuin/mcp-mermaid-validator","free":true,"listed":false,"github":"https://github.com/rtuin/mcp-mermaid-validator","clone":"git clone https://github.com/rtuin/mcp-mermaid-validator.git","description":"A Model Context Protocol server that validates and renders Mermaid diagrams.","language":"JavaScript","stars":56,"topics":["mcp","mermaid","model-context-protocol"],"license":"MIT","category":"mcp-servers","readme_excerpt":"MCP Server: Mermaid Validator A Model Context Protocol server that validates and renders Mermaid diagrams. This server enables LLMs to validate and render Mermaid diagrams. Usage Quick Start You can configure your MCP client to use the Mermaid Validator by adding it to your mcp servers file: Architecture High-Level Architecture This project is structured as a simple TypeScript Node.js application that: 1. Main Application : A Node.js service that validates Mermaid diagrams and returns rendered PNG output 2. MCP Integration : Uses the Model Context Protocol SDK to expose functionality to MCP-compatible clients 3. Mermaid CLI Integration : Leverages the Mermaid CLI tool to perform diagram validation and rendering Code Structure Component Functionality MCP Server (Main Component) The core functionality is implemented in src/main.ts . This component: 1. Creates an MCP server instance 2. Registers a validateMermaid tool that accepts Mermaid diagram syntax 3. Uses the Mermaid CLI to validate and render diagrams 4. Returns validation results and rendered PNG (if valid) 5. Handles error cases with appropriate error messages Data Flow 1. Input : Mermaid diagram syntax as a string 2. Processing : - The diagram is passed to the Mermaid CLI via stdin - The CLI validates the syntax and renders a PNG if valid - Output and errors are captured from stdout/stderr 3. Output : - Success: Text confirmation + rendered PNG as base64-encoded image - Failure: Error message with details about the val","default_branch":null,"files":null,"tree":[],"storefront":"/r/rtuin","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/rtuin/mcp-mermaid-validator/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}