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opendata402 Global City & Place Lookup
x402
opendata402 Global City & Place Lookup is a paid API for AI agents from opendata402.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-15).
Search for cities and towns worldwide by name (and optionally country), returning coordinates, country, region, population, time zone, and GeoNames ID, sorted by population descending.
Price / call$0.001
Success—
StatusUnknown
How this service works
Find cities and towns worldwide (all places with 15,000+ inhabitants, about 30,000) by name, optionally within a country: coordinates, country, region code, population, time zone and GeoNames id, largest first. Use it for geocoding place names, disambiguation and to get a time zone or coordinates for a city. GeoNames data, CC BY 4.0, refreshed nightly.
Output
A JSON array of matching places (population ≥ 15,000), each containing the place name, latitude, longitude, country code, admin region code, population, IANA time zone identifier, and GeoNames ID, sorted largest population first. Typically returns multiple results when the name is ambiguous across countries or regions.
Example use cases
Time zone lookup for scheduling
“I need to schedule a call with someone in Lyon, France — can you find the time zone for Lyon so I know what UTC offset to use?”
Disambiguating a city name
“I have a city called 'San Jose' but I'm not sure if it's the one in California or Costa Rica — can you look up both and tell me their populations and coordinates?”
Geocoding a city for a mapping app
“I need the latitude and longitude for Nairobi, Kenya to drop a pin on a map — can you look that up?”
Technical details
Endpoint
GEThttps://opendata402.com/v1/places?utm_source=zero.xyzWhen to prefer
Prefer this endpoint when you need fast, lightweight city-name geocoding with time zone and population data for cities worldwide, especially when disambiguation by country is needed. It is ideal for resolving place names to coordinates or time zones without requiring a full-featured geocoding API. Not suitable for street-level address geocoding, reverse geocoding, or places with fewer than 15,000 inhabitants.
Side effects
- Query string too short (< 2 chars) or too long (> 80 chars) returns a validation error
- No matching city found returns an empty results array
- Invalid country code (not ISO 3166-1 alpha-2) returns a validation error
- Places with fewer than 15,000 inhabitants are not indexed and will not be returned
- Payment failure (x402) prevents the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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