Fits ordinary least squares to log radiance by year, converts the slope to annua
Fits ordinary least squares to log radiance by year, converts the slope to annual radiance change, and applies a caller-supplied economic elasticity. Night lights are an imperfect proxy affected by sensors, saturation, electrification, outages, policy, and conflict; this is not an official economic statistic or causal estimate.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
891 msmedian answer time
$0.003listed price per call
$0.003price 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
POST https://space.halowerk.com/v1/night-lights-econ
| Category | Everything else |
|---|---|
| Provider host | space.halowerk.com |
| Networks | eip155:8453 |
| 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 |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.003 | 891 ms |
Example input (from the provider)
{
"body": {
"base_economic_index": 100,
"economic_elasticity": 0.65,
"observations": [
{
"mean_radiance": 18.4,
"year": 2022
},
{
"mean_radiance": 19.1,
"year": 2023
},
{
"mean_radiance": 20,
"year": 2024
},
{
"mean_radiance": 20.6,
"year": 2025
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"base_economic_index": {
"maximum": 1000000000000000,
"minimum": 1e-06,
"type": "number"
},
"economic_elasticity": {
"description": "Percent economic-index change per percent radiance change under the caller model.",
"maximum": 10,
"minimum": -10,
"type": "number"
},
"observations": {
"items": {
"additionalProperties": false,
"properties": {
"mean_radiance": {
"maximum": 1000000000000000,
"minimum": 1e-09,
"type": "number"
},
"year": {
"maximum": 2200,
"minimum": 1900,
"type": "integer"
}
},
"required": [
"year",
"mean_radiance"
],
"type": "object"
},
"maxItems": 1000,
"minItems": 2,
"type": "array"
}
},
"required": [
"observations",
"economic_elasticity",
"base_economic_index"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}