Grandline MCP Server

by dmsnavinio.github.dmsnavin/grandline-mcpv0.2.1

Empirical maritime distances from real AIS tracks: 4 route variants, port lookup, bulk matrix

Pythonstdioofficial registry

context tax

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security

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cold start

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freshness

Slowing3mo ago

Install Grandline MCP server

claude mcp add grandline -e GRANDLINE_API_KEY='<grandline-api-key>' -- uvx grandline-mcp

{
  "mcpServers": {
    "grandline": {
      "command": "uvx",
      "args": [
        "grandline-mcp"
      ],
      "env": {
        "GRANDLINE_API_KEY": "<grandline-api-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "grandline": {
      "command": "uvx",
      "args": [
        "grandline-mcp"
      ],
      "env": {
        "GRANDLINE_API_KEY": "<grandline-api-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "grandline": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "grandline-mcp"
      ],
      "env": {
        "GRANDLINE_API_KEY": "<grandline-api-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "grandline": {
      "command": "uvx",
      "args": [
        "grandline-mcp"
      ],
      "env": {
        "GRANDLINE_API_KEY": "<grandline-api-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
GRANDLINE_API_KEY	—	yes	Bearer token from grandline.luzomi.com/register. Omit to use the anonymous tier (5 calls total per IP).
GRANDLINE_API_URL	—	—	Override the API base URL (default https://grandline.luzomi.com/api/v1).

Freshness

Slowing — last maintenance signal 3mo ago. The newest of the signals below sets the band.

Last commit (default branch)
no data · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-07-09 · 3mo ago · official registry · v0.2.1

FAQ

›How do I install the Grandline MCP server in Claude Code?

Run: claude mcp add grandline -e GRANDLINE_API_KEY='<grandline-api-key>' -- uvx grandline-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Grandline require an API key?

Yes. It expects GRANDLINE_API_KEY, of which 1 is a secret.

›Can I use Grandline as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Grandline in the official MCP registry?

Yes, as io.github.dmsnavin/grandline-mcp.