Land or Sea Skill

Overview

Coordinates are Sea works by analyzing the coordinates provided and checking if they are in the sea. It uses advanced algorithms to check if the coordinates are in the sea and returns if the coordinates are in the sea or not.

Live Test Land or Sea Skill Skill →

The tool

Once your client is connected to the VerveKit server, this appears in its tool list as LandorSeaSkill. It is read-only and open-world — it fetches and never mutates anything on your side — so most clients call it without asking you to confirm.

Tool call

{
  "name": "LandorSeaSkill",
  "arguments": {
    "lat": "37.7749",
    "lon": "-122.4194"
  }
}

You do not name the tool yourself; the model picks it. Asking about 37.7749 in the terms this skill covers is enough for it to reach for LandorSeaSkill on its own — naming it explicitly also works, and is the way to force the call.

Connecting

One server URL covers every skill in the catalog, including this one. Authorization is OAuth: the client opens a browser once, and there is no key to paste into a config file.

{
  "mcpServers": {
    "vervekit": {
      "url": "https://api.vervekit.com/v1/mcp"
    }
  }
}

Per-client setup — Claude, Cursor, VS Code, ChatGPT — is on the MCP setup page.

Arguments

These are the properties on the tool's inputSchema, so a well-behaved client validates them before the call is made. Premium arguments are accepted on every plan but only take effect on plans that include them.

Argument	Type	Description
`lat`Required	number	The latitude of the coordinates range -90–90
`lon`Required	number	The longitude of the coordinates range -180–180

What the model gets back

The result carries a structuredContent object matching the tool's declared outputSchema, so a client reads fields without parsing prose. status is "ok" and error is null on success; a null field means the value was not available for that input, not that the call failed.

Result

{
  "status": "ok",
  "error": null,
  "data": {
    "latitude": 37.7749,
    "longitude": -122.4194,
    "isSea": false
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Field	Type	Example	Description
`latitude`	number	`37.7749`	The latitude coordinate value provided in request
`longitude`	number	`-122.4194`	The longitude coordinate value provided in request
`isSea`	boolean	`false`	Whether the coordinates are located in the sea

Failure modes

Errors come back as tool errors carrying a sentence the model can act on, not a bare status code. Error handling covers the full list.

Status	What it means
`400` / `422`	The arguments did not validate. The message names the offending one.
`401`	The OAuth session is invalid or expired — reconnect the server.
`403`	Blocked by a key restriction or an IP allow-list. Never a bad identity.
`404`	This skill is not part of VerveKit. Check the catalog.
`429`	Out of credits, or a brief rate limit. The message tells them apart.

A call costs 2 credits each time the tool actually runs; a model that reasons about the tool without calling it costs nothing.

Use cases

Maritime Fleet Tracking: When a vessel transmits GPS telemetry, fleet dispatchers verify if the craft is in open water before updating route status.
Delivery Address Verification: Flag erroneous delivery addresses or fake driver locations when reported coordinates point to water instead of land.
Marine Biology Research: Marine researchers filter animal tag pings to separate offshore migration waypoints from coastal land resting sites.
Emergency Dispatch Routing: To route distress beacons accurately, emergency responders check incoming coordinates to deploy coast guard vessels instead of ground crews.

Other ways to use Land or Sea Skill

Set up Land or Sea Skill on VerveKit, or reach the same source a different way. Your VerveKit account and credits work on all of them — one key, one balance.

Call it as a REST APIOne HTTPS endpoint and an x-api-key header, with SDKs for Node, Python and .NET.APIVerve →Reference →

Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.VerveSheets →Reference →

Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.VerveContext →Reference →