Standardizes current-minus-baseline change by a supplied scale, applies an expli
Standardizes current-minus-baseline change by a supplied scale, applies an explicit direction and weight, clips extreme components, and maps the weighted result to a 0–100 descriptive index. Metric selection and interpretation remain with the caller. It does not obtain data, identify individuals, establish causation, rank residents or justify displacement decisions.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
886 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://prop.halowerk.com/v1/gentrification-index
| Category | Everything else |
|---|---|
| Provider host | prop.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 | $0.003 | 886 ms |
Example input (from the provider)
{
"body": {
"metrics": [
{
"baseline_value": 1100,
"current_value": 1420,
"metric_id": "median_rent",
"normalization_scale": 250,
"pressure_direction": "increase",
"weight": 0.4
},
{
"baseline_value": 0.38,
"current_value": 0.29,
"metric_id": "low_income_household_share",
"normalization_scale": 0.08,
"pressure_direction": "decrease",
"weight": 0.35
},
{
"baseline_value": 12,
"current_value": 16,
"metric_id": "eviction_filings_per_1000",
"normalization_scale": 5,
"pressure_direction": "increase",
"weight": 0.25
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"metrics": {
"items": {
"additionalProperties": false,
"properties": {
"baseline_value": {
"maximum": 1000000000000000,
"minimum": -1000000000000000,
"type": "number"
},
"current_value": {
"maximum": 1000000000000000,
"minimum": -1000000000000000,
"type": "number"
},
"metric_id": {
"maxLength": 128,
"minLength": 1,
"type": "string"
},
"normalization_scale": {
"maximum": 1000000000000000,
"minimum": 1e-09,
"type": "number"
},
"pressure_direction": {
"enum": [
"increase",
"decrease"
],
"type": "string"
},
"weight": {
"maximum": 1000000,
"minimum": 0,
"type": "number"
}
},
"required": [
"metric_id",
"baseline_value",
"current_value",
"normalization_scale",
"pressure_direction",
"weight"
],
"type": "object"
},
"maxItems": 1000,
"minItems": 1,
"type": "array"
}
},
"required": [
"metrics"
],
"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"
}