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Line9

Render Mermaid with Line9 layout in your assistant.

Connector by line9.aiOfficial · Domain verified by the MCP Registry

IndexedLicense unknownRemote (HTTP)
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Install

Works with Claude Code, VS Code, Cursor, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install connector/line9-ai-diagrams

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

  • https://mcp.line9.ai/mcp Remote (HTTP)

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About

Render Mermaid with Line9 layout in your assistant.

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
3 read · 0 write · 0 deleteRead-only
Secrets
None asked for
Install scripts
Nothing to install (hosted)
Runs as
Hosted (remote endpoint)

Tools by what they do 3

From the running server's own tool list (tools/list) on Oct 25, 2026.

Read 3 · Look things up without changing anything.

  • get_diagram
  • list_diagrams
  • render_diagram

Network hosts it talks to 1

  • mcp.line9.ai · found in remote endpoint, install command

Files it touches

  • Any path the agent passes to its tools

Tools (3)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • get_diagramGet a diagramread-only

    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 instead of creating a new one. Requires Line9 sign-in. This connector cannot publish or save. To publish, the user opens the diagram in Line9 (the `open_url` link) and publishes there — not with the Line9 CLI.

  • list_diagramsList my diagramsread-only

    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.

  • render_diagramRender diagramread-only

    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 short verdict — kind, size, warnings, or a parse error with its line and column — plus an "Open in Line9" link. On a parse error, fix the named line and call again. Assistants that support MCP Apps show the diagram in a panel; there, do not paste the SVG or repeat the source in your reply. In an assistant with no panel (a …

Signals

Last release
Sep 17, 2026 (1 month ago)

Details

Registry name
ai.line9/diagrams
Version
0.4.4
Auth
Auth not stated
License
License unknown
Website
line9.ai/mcp
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
Official MCP Registry
Cite this page

Line9 MCP server. Agent Mart. https://agentmart.dev/connectors/line9-ai-diagrams (last updated 2026-10-24)