This is a stateful CLI for creating and rendering Mermaid diagrams without touching a GUI. You get project files that track your diagram source, undo/redo history, and commands to spit out SVGs or PNGs via mermaid.ink. It's built for AI agents with JSON output mode, but the REPL works fine for humans too. The sample presets (flowchart, sequence, etc.) are handy if you're prototyping quickly. Honestly most useful when you're already scripting diagram generation or need programmatic access to Mermaid rendering. If you just want one diagram, the web editor is faster, but for batch work or agent workflows this makes sense.
npx skills add https://github.com/hkuds/cli-anything --skill cli-anything-mermaid