Line9 for Claude Code

ai.line9/diagrams

Render Mermaid with Line9 layout in your assistant.

client:Claude Code transport:streamable-http tools:3

Install Line9 in Claude Code

run in your project directory

claude mcp add --transport http diagrams https://mcp.line9.ai/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs