Render Mermaid with Line9 layout in your assistant.
Connect Remote server
claude mcp add --transport http diagrams https://mcp.line9.ai/mcp
{
"mcpServers": {
"diagrams": {
"url": "https://mcp.line9.ai/mcp"
}
}
}
{
"servers": {
"diagrams": {
"type": "http",
"url": "https://mcp.line9.ai/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://mcp.line9.ai/mcp
Tools 3 found in our last check
render_diagramRender 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_diagramsList 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_diagramFetch 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
| Endpoint | https://mcp.line9.ai/mcp (Streamable HTTP) |
| First published | 17 Sep 2026 |
| Last updated | 17 Sep 2026 |
| Registry name | ai.line9/diagrams |
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