The answer
claude-mermaid
Top verified match: it matches your intent, corroborated across multiple registries.
fresh · published 7d ago · verified 2026-07-11tested · static-verifiedsigned passport ✓score 57/1002,317 monthly downloads
claude mcp add claude-mermaid -- npx -y claude-mermaid
Runners-up
- claude-mermaidnot yet verified8/100 · weaker match
- io.github.finfin/mermaid-mcp-app35/100 · weaker match