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Lilambd Place Brief – Nearest Geographic Features
x402
Lilambd Place Brief – Nearest Geographic Features is a paid API for AI agents from api.lilambd.com, paid per call via x402, $0.5/call, status unknown (last checked 2026-11-04).
Returns the nearest geographic features of a specified type (airports, cities, ports, earthquakes, volcanoes, etc.) to a given latitude/longitude coordinate, sorted by distance.
Price / call$0.5
Success—
StatusUnknown
How this service works
A crossing for play, feeling, language, science and computation — creating states that do not have names yet.
Output
A JSON array of geographic features sorted by distance from the query point. Each entry includes distance in km, coordinates, feature name, type identifiers (IATA/ICAO for airports), country ISO code, elevation, municipality, and scheduled service flag where applicable. Attribution metadata is included.
Example use cases
Flight routing nearest airport lookup
“What are the nearest airports to Osaka (34.6937° N, 135.5023° E) within 150 km? Only show airports with scheduled passenger service, up to 5 results.”
Disaster risk zone identification
“Find the nearest volcanoes and earthquake zones to Reykjavik (64.1466° N, 21.9426° W) within 500 km — give me up to 20 results.”
Logistics port proximity check
“List the nearest seaports to Rotterdam (51.9225° N, 4.4792° E) within 200 km, up to 10 results, so I can plan shipping routes.”
Technical details
Endpoint
GEThttps://api.lilambd.com/place-brief/nearest?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need proximity-ranked geographic features around a specific coordinate — especially aviation data (airports, heliports) or geohazard data (volcanoes, earthquakes, tsunamis). Preferred over static geodatabases when you need distance-sorted results with up-to-date snapshots and support for multiple feature categories in one API. The x402 micropayment model makes it suitable for pay-per-query agent workflows without subscription overhead.
Side effects
- Missing required parameters (lat, lon, or kind) returns a validation error
- Invalid 'kind' enum value returns a 400 error
- Radius exceeding 2000 km may be capped or rejected
- No results found within radius returns empty data array
- Payment failure (x402) blocks request before processing
- Very large limit/offset values may time out or return partial data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": [
{
"km": 14.69,
"lat": 35.549678,
"lon": 139.786958,
"iata": "HND",
"icao": "RJTT",
"name": "Tokyo Haneda International Airport",
"type": "large_airport",
"ident": "RJTT",
"country_iso2": "JP",
"elevation_ft": 35,
"municipality": "Tokyo",
"scheduled_service": true
},
{
"km": 20.98,
"lat": 35.6717,
"lon": 139.528,
"iata": null,
"icao": "RJTF",
"name": "Chofu Airport",
"type": "medium_airport",
"ident": "RJTF",
"country_iso2": "JP",
"elevation_ft": 141,
"municipality": "Chofu",
"scheduled_service": true
}
],
"attribution": "OurAirports (public domain, snapshot 2026-11-01); distances computed by Lilambd"
}
}Tags
x402
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