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OnchainExpat Reverse Geocode API
x402
OnchainExpat Reverse Geocode API is a paid API for AI agents from x402.onchainexpat.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Converts geographic coordinates (latitude/longitude) into a human-readable address or location name via a pay-per-request x402 endpoint
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-request AI, crypto, proxy, and utility APIs using x402 protocol
Output
A JSON object containing the human-readable address components derived from the input coordinates, such as street name, city, region, postal code, and country.
Example use cases
Delivery agent location verification
“I just picked up a package from coordinates 40.7505, -73.9972 — what address should I confirm as the pickup location before I start delivering?”
Real estate property coordinate lookup
“A client sent me GPS coordinates 34.0522, -118.2437 for a property they're interested in — can you reverse geocode that and tell me what street address and neighborhood that points to?”
Emergency responder dispatch confirmation
“We have an emergency call with GPS coordinates 51.5074, -0.1278 — quickly reverse geocode those to get me the actual street address so we can send help to the right place.”
Technical details
Endpoint
POSThttps://x402.onchainexpat.com/api/x402-tools/reverse-geocodeWhen to prefer
Choose this endpoint when you need a pay-per-use, crypto-native reverse geocoding solution that accepts USDC micropayments via the x402 protocol, avoiding the need for API key management or subscription plans. Suitable for agents that already operate in a Web3 or x402 payment context.
Side effects
- Invalid or out-of-range coordinates return an error
- Missing latitude or longitude in request body
- Payment not provided or x402 payment rejected — returns 402 Payment Required
- Coordinates in remote or unmapped areas may return sparse or no address data
- Network timeout or upstream geocoding service unavailability
Input
{
"latitude": 48.8566,
"longitude": 2.3522
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| latituderequired | number | Latitude in decimal degrees. Alias: 'lat' |
| longituderequired | number | Longitude in decimal degrees. Alias: 'lon' |
Output
{
"cached": false,
"address": {
"city": "Paris",
"road": "Place de l'Hôtel-de-Ville - Esplanade de la Libération",
"state": "Île-de-France",
"region": "France métropolitaine",
"suburb": "Paris 4e Arrondissement",
"country": "France",
"postcode": "75004",
"city_block": "Quartier Saint-Merri",
"country_code": "fr",
"house_number": "6",
"city_district": "Paris",
"ISO3166-2-lvl4": "FR-IDF",
"ISO3166-2-lvl6": "FR-75C"
},
"latitude": 48.8566,
"longitude": 2.3522,
"display_name": "6, Place de l'Hôtel-de-Ville - Esplanade de la Libération, Quartier Saint-Merri, Paris 4e Arrondissement, Paris, Île-de-France, France métropolitaine, 75004, France"
}Schema · Response
| Field | Type | Description |
|---|---|---|
| cached | boolean | |
| address | object | |
| latitude | number | |
| longitude | number | |
| display_name | string |
Tags
x402
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