x402-domain-check.vercel.app/census/area
U.S. area demographics for a street address (Census geocoder -> tract, place, ZIP area, county) or a 5-digit ZIP: population, median age, household and per-capita income, home value, rent, poverty, unemployment, bachelor's-or-higher and owner-occupied rates from the American Community Survey. Not charged on errors.
Answeringour last check, 2026-10-31
1 of 1checks answered this week
306 msmedian answer time
$0.02listed price per call
$0.02price 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://x402-domain-check.vercel.app/census/area
| Category | Everything else |
|---|---|
| Provider host | x402-domain-check.vercel.app |
| 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 |
|---|---|---|---|---|
| 2026-10-31 | valid payment request | 402 | $0.02 | 306 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"zip": "94103"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"address": {
"description": "US one-line street address (5-200 chars)",
"type": "string"
},
"zip": {
"description": "5-digit ZIP (ZCTA); use address or zip",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}