Docs/Skills/Marine Weather Skill

Marine Weather Skill

Get marine weather data

OperationalCredits 10 per callp50 923msWeather

Overview

Marine Weather works by retrieving the marine weather data from various reliable weather sources and providing it in a structured format. You can expect accurate and up-to-date information.

Live Test Marine Weather Skill Skill →

The tool

Once your client is connected to the VerveKit server, this appears in its tool list as MarineWeatherSkill. 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": "MarineWeatherSkill",
  "arguments": {
    "lat": "29.48003",
    "lon": "-37.62424"
  }
}

You do not name the tool yourself; the model picks it. Asking about 29.48003 in the terms this skill covers is enough for it to reach for MarineWeatherSkill 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.

ArgumentTypeDescription
latRequirednumberThe latitude coordinate of the location
range -90–90
lonRequirednumberThe longitude coordinate of the location
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": {
    "location": {
      "lat": 29.48003,
      "lon": -37.62424
    },
    "weather": {
      "date": "2026-09-17",
      "avghumidity": 86,
      "condition": "Moderate or heavy rain shower",
      "uv": 5,
      "sunrise": "05:53 AM",
      "sunset": "06:08 PM",
      "moonrise": "12:04 PM",
      "moonset": "10:42 PM",
      "maxtempc": 25.9,
      "maxtempf": 78.6,
      "mintempc": 21.3,
      "mintempf": 70.3,
      "avgtempc": 24.9,
      "avgtempf": 76.8,
      "maxwindmph": 15.4,
      "maxwindkph": 24.7,
      "totalprecipmm": 14.89,
      "totalprecipin": 0.59,
      "totalsnowcm": 0,
      "avgviskm": 7.4,
      "avgvismiles": 4,
      "moonphase": "First Quarter",
      "moonillumination": 42
    }
  }
}

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.

FieldTypeExampleDescription
locationobject{…}
location.latnumber29.48003Latitude coordinate of the marine weather location
location.lonnumber-37.62424Longitude coordinate of the marine weather location
weatherobject{…}
weather.datestring2026-09-17Forecast date in YYYY-MM-DD format
weather.avghumiditynumber86Average humidity percentage for the day
weather.conditionstringModerate or heavy rain showerWeather condition summary for the day
weather.uvnumber5UV index for the day
weather.sunrisestring05:53 AMLocal sunrise time
weather.sunsetstring06:08 PMLocal sunset time
weather.moonrisestring12:04 PMLocal moonrise time
weather.moonsetstring10:42 PMLocal moonset time
weather.maxtempcnumber25.9Maximum temperature in Celsius for the location
weather.maxtempfnumber78.6Maximum temperature in Fahrenheit for the location
weather.mintempcnumber21.3Minimum temperature in Celsius for the location
weather.mintempfnumber70.3Minimum temperature in Fahrenheit for the location
weather.avgtempcnumber24.9Average temperature in Celsius for the location
weather.avgtempfnumber76.8Average temperature in Fahrenheit for the location
weather.maxwindmphnumber15.4Maximum wind speed in miles per hour
weather.maxwindkphnumber24.7Maximum wind speed in kilometers per hour
weather.totalprecipmmnumber14.89Total precipitation amount in millimeters
weather.totalprecipinnumber0.59Total precipitation amount in inches
weather.totalsnowcmnumber0Total snow depth in centimeters
weather.avgviskmPremiumnumber7.4Average visibility distance in kilometers
weather.avgvismilesPremiumnumber4Average visibility distance in miles
weather.moonphasePremiumstringFirst QuarterCurrent moon phase description for the location
weather.moonilluminationPremiumnumber42Moon illumination percentage from zero to one hundred

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.

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

A call costs 10 credits each time the tool actually runs; a model that reasons about the tool without calling it costs nothing.

Use cases

Voyage Route Planning
Commercial shipping dispatchers evaluate maximum wind speeds and precipitation totals along projected corridors to steer vessels away from rough open-sea conditions.
Offshore Fishing Charters
To protect offshore anglers, booking platforms check marine weather conditions, humidity levels, and UV indices before confirming deep-sea reservations.
Regatta Safety Monitoring
When organizing coastal sailing competitions, race committees monitor wind thresholds and precipitation to schedule offshore heats during safe operating windows.
Port Logistics Scheduling
Cargo terminal coordinators track offshore forecast conditions and daylight hours to prepare docking tugs and crane crews for inbound container vessels.

Other ways to use Marine Weather Skill

Set up Marine Weather 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 →

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