{
  "schema": "kallipolis.resource-quality.v1",
  "id": "resource.public-data.us-census-data-api",
  "version": "1.0.0",
  "title": "U.S. Census Data API boundary",
  "summary": "Official-source access, authentication, request-shaping, paging, freshness, legal, and interpretation boundaries for U.S. Census Data API.",
  "content": {
    "kind": "public-data-api-boundary",
    "facts": [
      {
        "id": "fact.census.data-api.access",
        "statement": "The Census Data API exposes many aggregate, time-series, and microdata datasets through dataset- and year-specific query URLs.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.census.data-api"
        ]
      },
      {
        "id": "fact.census.data-api.authentication",
        "statement": "Current Census guidance requires an API key for data queries, so examples without a valid key are not production access evidence.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.census.data-api"
        ]
      },
      {
        "id": "fact.census.data-api.request",
        "statement": "Responses can be JSON or CSV and use dataset variables, predicates, and geography selectors that must be discovered for the chosen dataset.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.census.data-api"
        ]
      },
      {
        "id": "fact.census.data-api.boundary",
        "statement": "A successful query is a scoped statistical response, not proof that every Census dataset, year, variable, or geography is available or comparable.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.census.data-api"
        ]
      }
    ]
  },
  "language": "en",
  "category": "public-data-api",
  "state": "prepared",
  "canonicalUrl": "https://platoskallipolis.com/resources/public-data-apis/us-census-data-api.json",
  "contentHash": "sha256:b0ebdbb74e07fe9690bbf9efca0651a60d0a2a10ba0cebdc1ad8db9f21efc0dd",
  "owner": {
    "id": "platos-kallipolis",
    "name": "Plato's Kallipolis",
    "type": "organization",
    "accountabilityUrl": "https://platoskallipolis.com/about"
  },
  "access": {
    "mode": "public",
    "url": "https://platoskallipolis.com/resources/public-data-apis/us-census-data-api.json",
    "authentication": "none",
    "robotsAllowed": true
  },
  "provenance": {
    "method": "primary-source",
    "sources": [
      {
        "id": "source.census.data-api",
        "url": "https://www.census.gov/data/developers/guidance.html",
        "title": "Guidance for Developers",
        "publisher": "U.S. Census Bureau",
        "observedAt": "2026-08-27T08:40:00Z"
      }
    ]
  },
  "observedAt": "2026-08-27T08:40:00Z",
  "freshness": {
    "policy": "max-age",
    "state": "current",
    "nextReviewAt": "2026-09-03T08:40:00Z",
    "maxAgeSeconds": 604800
  },
  "license": {
    "id": "source-terms-apply",
    "url": "https://www.census.gov/data/developers/about/terms-of-service.html",
    "redistributionAllowed": false
  },
  "evidence": [
    {
      "id": "evidence.census.data-api",
      "type": "source-claim",
      "url": "https://www.census.gov/data/developers/guidance.html",
      "observedAt": "2026-08-27T08:40:00Z"
    }
  ]
}