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Open Waters AIS

by openwaters.io · remote · no sign-in to list tools · v0.17.0 · published by io.openwaters

Live AIS vessel positions by MMSI, name, area, or radius, plus coverage. No sign-in, no key.

Read only
CompareRegistry entry

6 tools: 6 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http ais https://ais.openwaters.io/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

6 tools

Only reads 6Claude Code: allow
  • find_vessels_in_areaVessels currently inside a latitude/longitude bounding box, newest report first, with optional kind and ship-type filters.No findings

    Why it is in this group

    • The name "find_vessels_in_area" says "find": a word for reading.
    Description, as the server wrote it
    Vessels currently inside a latitude/longitude bounding box, newest report first, with optional kind and ship-type filters. Use for what is in a port, a strait, or a stretch of coast. Anonymous calls may cover 100 square degrees per call.

    Annotations the server declares

    • idempotentHint: true
    • openWorldHint: false
    • readOnlyHint: true
    • title: Vessels in an area
  • find_vessels_nearVessels within a radius (default 10 NM, maximum 50) of a point or of another vessel's last known position, nearest first, each with distance and bearing from the centre.No findings

    Why it is in this group

    • The name "find_vessels_near" says "find": a word for reading.
    Description, as the server wrote it
    Vessels within a radius (default 10 NM, maximum 50) of a point or of another vessel's last known position, nearest first, each with distance and bearing from the centre. Use for what is near this position or what is around vessel X.

    Annotations the server declares

    • idempotentHint: true
    • openWorldHint: false
    • readOnlyHint: true
    • title: Vessels near a point or vessel
  • get_coverageWhere Open Waters AIS is hearing AIS right now: sources with their current delay, stations, freshness, and vessel counts.No findings

    Why it is in this group

    • The name "get_coverage" says "get": a word for reading.
    Description, as the server wrote it
    Where Open Waters AIS is hearing AIS right now: sources with their current delay, stations, freshness, and vessel counts. Pass a bounding box to learn which stations cover it and how many vessels are in it, or a station id for that station's numbers. Vessel counts cover the last 30 minutes; max_age widens them, to 7d for the last week or all for every vessel the network has heard. Call this before saying a region has no traffic.

    Annotations the server declares

    • idempotentHint: true
    • openWorldHint: false
    • readOnlyHint: true
    • title: Coverage and sources
  • get_vessel_trackThe positions heard from one vessel over a time range, oldest first, with speed, course, and navigational status.No findings

    Why it is in this group

    • The name "get_vessel_track" says "get": a word for reading.
    Description, as the server wrote it
    The positions heard from one vessel over a time range, oldest first, with speed, course, and navigational status. Positions implying an impossible speed for the vessel are left out. Use for where a ship was yesterday, when it left port, or its route today. Give the vessel's mmsi, or its imo with a feeder or partner token. A call covers up to a year. By default the track is simplified by shape: the positions that hold its path, with breaks where the vessel went unheard; interval_minutes asks for even spacing instead.

    Annotations the server declares

    • idempotentHint: true
    • openWorldHint: false
    • readOnlyHint: true
    • title: Where a vessel has been
  • get_vesselsLast known position and particulars of specific vessels by MMSI (Maritime Mobile Service Identity), or by IMO number with a feeder or partner token: the last report heard for each,…No findings

    Why it is in this group

    • The name "get_vessels" says "get": a word for reading.
    Description, as the server wrote it
    Last known position and particulars of specific vessels by MMSI (Maritime Mobile Service Identity), or by IMO number with a feeder or partner token: the last report heard for each, however long ago, with destination, ETA, draught, and dimensions once its static data has been heard, and which identifiers match no vessel the network has heard. A vessel whose IMO number has a Wikidata item also carries its type, builder, year built, tonnage, registered dimensions, registry, home port, owner, operator, former names, and Wikipedia and Commons links from there, and a documented US vessel its service type, status, official number, registered dimensions, and tonnage from the US Coast Guard. Use search_vessels_by_name first when you only have a name.

    Annotations the server declares

    • idempotentHint: true
    • openWorldHint: false
    • readOnlyHint: true
    • title: Vessels by MMSI
  • search_vessels_by_nameVessels whose name contains the text, case-insensitive, among every vessel the network has heard, each with its last known position.No findings

    Why it is in this group

    • The name "search_vessels_by_name" says "search": a word for reading.
    Description, as the server wrote it
    Vessels whose name contains the text, case-insensitive, among every vessel the network has heard, each with its last known position. Use to turn a name into an MMSI, then get_vessels or find_vessels_near for detail. An optional bounding box narrows the search. With a feeder or partner token, text of the form IMO 9241061 finds the vessels reporting that IMO number, and a bare seven-digit number finds them ahead of the name matches.

    Annotations the server declares

    • idempotentHint: true
    • openWorldHint: false
    • readOnlyHint: true
    • title: Search vessels by name

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.17.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http ais https://ais.openwaters.io/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__ais__find_vessels_in_area",
      "mcp__ais__find_vessels_near",
      "mcp__ais__get_coverage",
      "mcp__ais__get_vessel_track",
      "mcp__ais__get_vessels",
      "mcp__ais__search_vessels_by_name"
    ],
    "ask": [],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as ais. Review it before you use it.