AI Plugin IndexMermaid Validator MCP vs GitDiagram
Mermaid Validator MCP and GitDiagram are both design MCP servers. GitDiagram scores higher (100 vs 36 out of 100). GitDiagram has more GitHub stars (18k), and GitDiagram was updated more recently (7 days ago). The table compares them side by side.
| Mermaid Validator MCP | GitDiagram | |
|---|---|---|
| Score | 36 / 100 | 100 / 100 |
| What it does | MCP server for validating Mermaid diagram syntax | Architecture diagrams, explanations and Mermaid source for public GitHub repositories. |
| Publisher | Verified: npm:mermaid-validator-mcp | Verified: gitdiagram.com |
| Grades | Maintenance D, Licence A, Quality D | Maintenance A, Licence A, Quality A |
| npm downloads a week | 8 | Not on npm |
| Runs | Local | Remote |
| Works with | Claude Code, Claude Desktop, Cursor, Codex, Gemini CLI, VS Code, Windsurf | Claude Code, Claude Desktop, Cursor, Codex, Gemini CLI, VS Code, Windsurf, ChatGPT |
| GitHub stars | 3 | 18,323 |
| Last commit | 4 Mar 2026 | 14 Oct 2026 |
| Licence | MIT | MIT |
| Listed since | 20 Oct 2026 | 19 Oct 2026 |
| Install Mermaid Validator MCP | Install GitDiagram |
Questions
Is Mermaid Validator MCP or GitDiagram more popular?
GitDiagram has more GitHub stars: 18,323.
Can I use Mermaid Validator MCP and GitDiagram together?
Yes. AI assistants can load several MCP servers at once. Install both and the assistant picks the right one for each task.