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Line9

ai.line9/diagrams · v0.4.4

Render Mermaid with Line9 layout in your assistant.

Connect Remote server

Terminal
claude mcp add --transport http diagrams https://mcp.line9.ai/mcp
~/.cursor/mcp.json
{
  "mcpServers": {
    "diagrams": {
      "url": "https://mcp.line9.ai/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "diagrams": {
      "type": "http",
      "url": "https://mcp.line9.ai/mcp"
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://mcp.line9.ai/mcp

Tools 3 found in our last check

  • render_diagram

    Render Mermaid source with Line9's layout engine. Call this whenever you write or change Mermaid and the user should see the result. Flowcharts and sequence diagrams get Line9's layout; other Mermaid kinds are rendered with Mermaid's own layout and flagged as such. Returns a sho…

  • list_diagrams

    List the diagrams published in the user's Line9 workspace(s): name, visibility, version, last update and permalink. Use it to find a diagram before `get_diagram`. Requires Line9 sign-in.

  • get_diagram

    Fetch a published diagram's current Mermaid source by name or slug, and show it rendered. The returned source is stamped with the diagram's identity — keep the `line9:` frontmatter block when you edit it so that Line9 recognises the diagram when it is opened and published there…

Details

Endpointhttps://mcp.line9.ai/mcp (Streamable HTTP)
First published17 Sep 2026
Last updated17 Sep 2026
Registry nameai.line9/diagrams

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