io.github.dmsnavin/grandline-mcp
Empirical maritime distances from real AIS tracks: 4 route variants, port lookup, bulk matrix
MCP server · by dmsnavin
About
io.github.dmsnavin/grandline-mcp is an MCP server published by dmsnavin. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-11 and have recorded no change since. As of our marketplace pass on 2026-10-14.
What it asks for
- Runs on your machine
- Secrets: 1
- Settings: 2
Requires: GRANDLINE_API_KEY (secret)
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Package
PyPI grandline-mcp (grandline-mcp on PyPI)
- Not found on PyPI when we last checked (2026-10-13)
PyPI facts come from pypi.org, PyPI downloads from pypistats.org. Each figure is the registry's own and is never added to another. A registry that publishes no figure shows none: no number is not zero.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a local MCP server: PyPI package
Built from what Official MCP Registry declares.
claude mcp add --env "GRANDLINE_API_KEY=<YOUR_GRANDLINE_API_KEY>" --transport stdio grandline-mcp -- uvx grandline-mcp[mcp_servers.grandline-mcp]
command = "uvx"
args = ["grandline-mcp"]
[mcp_servers.grandline-mcp.env]
GRANDLINE_API_KEY = "<YOUR_GRANDLINE_API_KEY>"{
"mcpServers": {
"grandline-mcp": {
"command": "uvx",
"args": [
"grandline-mcp"
],
"env": {
"GRANDLINE_API_KEY": "<YOUR_GRANDLINE_API_KEY>"
}
}
}
}Replace the values in angle brackets with your own. We show the names of the settings, never values.
Optional settings it also lists: GRANDLINE_API_URL.
Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 0.2.1 | No figure published | Not marked | |
| Official MCP Registry (Open the registry record) | Listed | 0.2.2 | No figure published | Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
Nothing has moved on this plugin since we started watching it.
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Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.