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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "diagrams": {
      "type": "http",
      "url": "https://mcp.line9.ai/mcp"
    }
  }
}

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

[mcp_servers.diagrams]
url = "https://mcp.line9.ai/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "diagrams": {
      "type": "remote",
      "url": "https://mcp.line9.ai/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "diagrams": {
      "type": "http",
      "url": "https://mcp.line9.ai/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=diagrams&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLmxpbmU5LmFpL21jcCJ9"
}

{
  "servers": {
    "diagrams": {
      "type": "http",
      "url": "https://mcp.line9.ai/mcp"
    }
  }
}

{
  "mcpServers": {
    "diagrams": {
      "httpUrl": "https://mcp.line9.ai/mcp"
    }
  }
}

extensions:
  "diagrams":
    enabled: true
    name: "diagrams"
    type: streamable_http
    uri: "https://mcp.line9.ai/mcp"
    timeout: 300

Quality 97 / 100strong

protocol100 · weight 25

pass
protocol.modernsupports 2026-07-28 (server/discover)
pass
protocol.statelessanswers without a session
pass
protocol.transportstreamable HTTP
pass
protocol.list_ttltool list is cacheable (ttlMs 3600000)

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene93 · weight 30

pass
tools.descriptionsevery tool has a description
warn
tools.description_length1 tools have descriptions over 1,024 characters, which crowds the context
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations3 of 3 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 857 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changes3 tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

3 tools, about 857 tokens to load them all · tool set 96a1b1ceb3e9 · tools last changed 2026-10-03 · checked 2026-10-19 10:52 UTC

Tool changes

2026-10-03get_diagramchangedoutput schema
2026-10-03list_diagramschangedoutput schema
2026-10-03render_diagramchangedoutput schema

Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 79 / 100

no-repository

provenance55

liveness99

freshness85

hygiene80

+dns-namespace +website +reachable +uptime-97% ~updated-32d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://mcp.line9.ai/mcp` streamable-http	none	yes	97%	688 ms	2026-07-28	2026-10-19

Tools (3)

`get_diagram`read-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_diagrams`read-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_diagram`read-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 terminal or editor), reply with the verdict line and the `open_url` link — that link is the only way the user sees the diagram. Write flowcharts as `flowchart LR` unless the user asks for top-to-bottom; chat panels are wide and short. No sign-in needed; renders carry a small Line9 mark unless the user is signed in to Line9 Pro. Set theme, orientation, spacing and legend in the source itself (`line9:` frontmatter; `flowchart LR`), never as arguments. 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.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "ai.line9/diagrams",
  "title": "Line9",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.line9.ai/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.4.4",
  "websiteUrl": "https://line9.ai/mcp",
  "description": "Render Mermaid with Line9 layout in your assistant."
}