Airport Distance Skill
The tool
Let your agent measure the gap between any two airports. Call it as an MCP tool for miles, km, flight time and bearing from IATA or ICAO codes.
Once your client is connected to the VerveKit MCP server, this appears in its tool list as AirportDistanceSkill. It is read-only and open-world: it fetches, it never mutates anything on your side, so most clients will call it without asking you to confirm.
{
"name": "AirportDistanceSkill",
"arguments": {
"iata1": "JFK",
"iata2": "LAX"
}
}What that looks like in a conversation
You don't name the tool — the model picks it. Asking about JFK in the terms this source covers is enough for it to reach for AirportDistanceSkill on its own.
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"
}
}
}https://api.vervekit.com/v1/mcpPer-client setup — Claude Desktop, 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.
| Argument | Type | Example | Description |
|---|---|---|---|
iata1Required | string | JFK | The IATA code of the first airport (e.g. JFK) |
iata2Required | string | LAX | The IATA code of the second airport (e.g. LAX) |
What the model gets back
The result carries a structuredContent object matching the tool's declared outputSchema, so a client can read fields without parsing prose. status is "ok" on success and error is null; a null field means the value wasn't available for that input, not that the call failed.
{
"status": "ok",
"error": null,
"data": {
"distanceMiles": 2470.23,
"distanceKm": 3974.2,
"distanceNauticalMiles": 2145.12,
"estimatedFlightTime": "5h 24m",
"timezoneDiffHours": -3,
"bearing": 265,
"direction": "West",
"isInternational": false,
"carbonEstimateKg": 543,
"airport1": {
"name": "John F Kennedy International Airport",
"iata": "JFK",
"icao": "KJFK",
"city": "New York",
"state": "New-York",
"country": "US",
"elevation": 13,
"latitude": 40.63980103,
"longitude": -73.77890015,
"timezone": "America/New_York"
},
"airport2": {
"name": "Los Angeles International Airport",
"iata": "LAX",
"icao": "KLAX",
"city": "Los Angeles",
"state": "California",
"country": "US",
"elevation": 125,
"latitude": 33.94250107,
"longitude": -118.4079971,
"timezone": "America/Los_Angeles"
}
}
}Fields
| Field | Type | Example | Description |
|---|---|---|---|
distanceMiles | number | 2470.23 | Distance in statute miles |
distanceKm | number | 3974.2 | Great-circle distance between the two airports in kilometres |
distanceNauticalMilesPremium | number | 2145.12 | Distance in nautical miles (aviation standard) |
estimatedFlightTime | string | 5h 24m | Estimated flight duration (e.g., 5h 24m) |
timezoneDiffHoursPremium | number | -3 | Timezone difference in hours between airports |
bearingPremium | number | 265 | Compass bearing from airport1 to airport2 (0-360 degrees) |
directionPremium | string | West | Compass direction (e.g., North, Southwest, East) |
isInternationalPremium | boolean | false | Whether the flight crosses international borders |
carbonEstimateKgPremium | number | 543 | Estimated CO2 emissions in kg per passenger (based on ICAO methodology) |
airport1Premium | object | {…} | Details about the first airport |
airport1.namePremium | string | John F Kennedy International Airport | Full name of the origin airport |
airport1.iataPremium | string | JFK | Three-letter IATA code of the origin airport |
airport1.icaoPremium | string | KJFK | Four-letter ICAO code of the origin airport |
airport1.cityPremium | string | New York | City the origin airport serves |
airport1.statePremium | string | New-York | State or region of the origin airport |
airport1.countryPremium | string | US | Country code of the origin airport |
airport1.elevation | number | 13 | Airport elevation in feet |
airport1.latitude | number | 40.63980103 | Airport latitude |
airport1.longitude | number | -73.77890015 | Airport longitude |
airport1.timezone | string | America/New_York | Airport timezone (e.g., America/New_York) |
airport2Premium | object | {…} | Details about the second airport |
airport2.namePremium | string | Los Angeles International Airport | Full name of the destination airport |
airport2.iataPremium | string | LAX | Three-letter IATA code of the destination airport |
airport2.icaoPremium | string | KLAX | Four-letter ICAO code of the destination airport |
airport2.cityPremium | string | Los Angeles | City the destination airport serves |
airport2.statePremium | string | California | State or region of the destination airport |
airport2.countryPremium | string | US | Country code of the destination airport |
airport2.elevation | number | 125 | Airport elevation in feet |
airport2.latitude | number | 33.94250107 | Airport latitude |
airport2.longitude | number | -118.4079971 | Airport longitude |
airport2.timezone | string | America/Los_Angeles | Airport timezone (e.g., America/Los_Angeles) |
Failure modes
Errors come back as tool errors with a sentence the model can act on, not a bare status code.
| Status | What it means |
|---|---|
400 / 422 | The arguments didn't validate. The message names the offending one. |
401 | The OAuth session is invalid or expired — reconnect the server. |
403 | Out of credits. Not a bad key — the month's allowance is spent. |
404 | This skill isn't part of VerveKit. Check the catalog. |
429 | Brief rate limit. Retrying after a moment succeeds. |
Other ways to use Airport Distance Skill
Set up Airport Distance 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.
Frequently asked questions
Do I have to tell the agent to use AirportDistanceSkill?
No. The tool's name and description are in the model's context once the server is connected, so it selects the tool when the question calls for it. Naming it explicitly works too and is useful when you want to force the call.
Does connecting the server expose every tool at once?
Yes — one connection lists the whole VerveKit catalog. Clients with a tool budget can usually filter the list; the credit cost is per call, so an unused tool costs nothing.
What does a call cost?
1 credit each time the tool actually runs. A model that reasons about the tool without calling it costs nothing.
Is there a REST version of this?
Yes — the same source is available as a plain HTTPS endpoint on APIVerve, linked above. Same data, same credits, same account.