Japan Port Vessel MCP Server

Japan Port Vessel Traffic MCP

OpenWaters AIS ベースの日本港湾船舶交通データ MCP サーバー。 API キー不要・完全無料・公開 AIS データ（tosa compliant）。

Features

• 20 major Japanese ports pre-configured with bounding boxes
• Real-time vessel position, name, IMO, flag, destination, ETA
• Historical track (up to 366 days)
• ETA & delay estimation (AIS-reported vs speed-projected)
• Port overview aggregation (counts by type, flag, status)

Data source

Open Waters AIS — aggregate of community AIS receivers, AISHub, aisstream. No official API key required for the anonymous tier. Source: https://ais.openwaters.io/api/ais/

Installation

git clone https://github.com/atushi1841/japan-port-vessel-mcp.git
cd japan-port-vessel-mcp
uv sync  # or: pip install -r requirements.txt

Usage (stdio)

uv run --directory . src/stdio_main.py

Or configure in Claude Desktop / Cursor MCP settings:

{
  "mcpServers": {
    "japan-port-vessel": {
      "command": "uv",
      "args": ["run", "--directory", "<path-to-repo>", "src/stdio_main.py"]
    }
  }
}

Tools

Quick examples

# List Japanese ports
ports = list_japan_ports()

# Vessels in Tokyo Bay
tokyo = get_vessels_in_port("JPTYO", limit=20)

# ETA delay for a specific vessel
eta = estimate_vessel_eta("431005321", port_code="JPTYO")
print(eta["delay_hours"])

License

MIT — like the Open Waters AIS network. Attribution required.

Related

• OpenWaters AIS API: https://ais.openwaters.io/api/ais/

Apify Store

This MCP server is published as an Apify Actor: japan-port-vessel-mcp.

Apify Store: atushi1841

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Data & Store

• Apify Store: https://apify.com/fruitful_quintessence
• Gumroad datasets: https://atushi5.gumroad.com/l/kutuxe