Use when checking what changed at a place between two dates (construction, defor
Use when checking what changed at a place between two dates (construction, deforestation, flooding, crops). Input: lat, lon, radius_m (200-10000), before and after dates (20+ days apart). Output: JSON per date: clearest scene, area cloud %, NDVI mean/median, true color, NDVI and false color PNG URLs; NDVI change and reliability. No scene: 404, not charged. Example: ?lat=37.5665&lon=126.978&before=2026-04-15&after=2026-10-08
Answeringour last check, 2026-10-31
2 of 2checks answered this week
26 msmedian answer time
$0.018listed price per call
$0.018price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://1gateway.dev/v1/geo/satellite/compare
| Category | Everything else |
|---|---|
| Provider host | 1gateway.dev |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-31 | valid payment request | 402 | $0.018 | 31 ms |
| 2026-10-29 | valid payment request | 402 | $0.018 | 21 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"after": "2026-10-08",
"before": "2026-04-15",
"lat": 37.5665,
"lon": 126.978,
"radius_m": 2000,
"size": 768,
"window_days": 15
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"after": {
"description": "Later date YYYY-MM-DD, at least 20 days after before",
"examples": [
"2026-10-08"
],
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"type": "string"
},
"before": {
"description": "Earlier date YYYY-MM-DD (2017-01-01 or later)",
"examples": [
"2026-04-15"
],
"pattern": "^\\d{4}-\\d{2}-\\d{2}$",
"type": "string"
},
"lat": {
"description": "Latitude, WGS84 decimal degrees",
"examples": [
37.5665
],
"maximum": 84,
"minimum": -84,
"type": "number"
},
"lon": {
"description": "Longitude, WGS84 decimal degrees",
"examples": [
126.978
],
"maximum": 180,
"minimum": -180,
"type": "number"
},
"radius_m": {
"description": "Half-width of the square area in meters (default 2000)",
"examples": [
2000
],
"maximum": 10000,
"minimum": 200,
"type": "integer"
},
"size": {
"description": "Image width/height in px (default 768)",
"examples": [
768
],
"maximum": 2048,
"minimum": 256,
"type": "integer"
},
"window_days": {
"description": "Search \u00b1 days around each date (default 15)",
"examples": [
15
],
"maximum": 45,
"minimum": 3,
"type": "integer"
}
},
"required": [
"lat",
"lon",
"before",
"after"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"after": {
"properties": {
"images": {
"properties": {
"false_color": {
"type": "string"
},
"ndvi": {
"type": "string"
},
"true_color": {
"type": "string"
}
},
"type": "object"
},
"ndvi": {
"properties": {
"mean": {
"type": "number"
},
"median": {
"type": "number"
},
"std": {
"type": "number"
},
"validPct": {
"type": "integer"
}
},
"type": "object"
},
"requestedDate": {
"type": "string"
},
"scene": {
"properties": {
"areaClearPct": {
"type": "integer"
},
"areaCloudPct": {
"type": "integer"
},
"date": {
"type": "string"
},
"datetime": {
"type": "string"
},
"id": {
"type": "string"
},
"platform": {
"type": "string"
}
},
"type": "object"
},
"searchWindow": {
"properties": {
"from": {
"type": "string"
},
"to": {
"type": "string"
}
},
"type": "object"
}
},
"type": "object"
},
"attribution": {
"type": "string"
},
"before": {
"properties": {
"images": {
"properties": {
"false_color": {
"type": "string"
},
"ndvi": {
"type": "string"
},
"true_color": {
"type": "string"
}
},
"type": "object"
},
"ndvi": {
"properties": {
"mean": {
"type": "number"
},
"median": {
"type": "number"
},
"std": {
"type": "number"
},
"validPct": {
"type": "integer"
}
},
"type": "object"
},
"requestedDate": {
"type": "string"