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Synapse Geocoding API
x402
Synapse Geocoding API is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).
Converts a place name or address into geographic coordinates (latitude and longitude) along with a structured display name
Price / call$0.002
Success—
StatusUnknown
How this service works
Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.
Output
Returns a JSON array of matching location results, each containing latitude, longitude, a short place name, and a full display name with region and country context (e.g. {lat: '48.8588897', lon: '2.3200410', name: 'Paris', display_name: 'Paris, Ile-de-France, France'}).
Example use cases
Map pin placement from city name
“I need the exact GPS coordinates for Tokyo, Japan — I want to drop a pin on my map and the app needs a lat/lon.”
Route planning coordinate lookup
“Can you get me the latitude and longitude for Barcelona, Spain? I'm building a driving route and need the starting coordinates.”
Geofence setup for location alert
“Look up the coordinates for Chicago, Illinois — I want to set up a geofence alert around the city center.”
Technical details
Endpoint
GEThttps://anibalb.duckdns.org/x402/geocoding?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to convert a human-readable place name or address into geographic coordinates without needing an API key or account setup. It is priced per call in USDC via x402, making it suitable for lightweight, pay-as-you-go geocoding in agent workflows.
Side effects
- Missing or empty query parameter returns an error or empty results array
- Ambiguous place name may return multiple results requiring disambiguation
- Unknown or misspelled location returns an empty results array
- Network or upstream provider outage returns a 5xx error
- Payment failure via x402 returns a 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"results": [
{
"lat": "48.8588897",
"lon": "2.3200410",
"name": "Paris",
"display_name": "Paris, Ile-de-France, France"
}
]
}
}Tags
x402
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