{
  "schema": "kallipolis.resource-quality.v1",
  "id": "resource.public-data.library-of-congress-json-api",
  "version": "1.0.0",
  "title": "Library of Congress JSON/YAML API boundary",
  "summary": "Official-source access, authentication, request-shaping, paging, freshness, legal, and interpretation boundaries for Library of Congress JSON/YAML API.",
  "content": {
    "kind": "public-data-api-boundary",
    "facts": [
      {
        "id": "fact.loc.json-api.access",
        "statement": "The loc.gov JSON/YAML API provides structured search, item, collection, format, and resource data used by the Library of Congress website.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.loc.json-api"
        ]
      },
      {
        "id": "fact.loc.json-api.authentication",
        "statement": "Public read requests do not require an API key, but clients should identify and pace themselves and respect documented service limits.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.loc.json-api"
        ]
      },
      {
        "id": "fact.loc.json-api.request",
        "statement": "Search results, item responses, and resource responses have different shapes, and clients must page and select the endpoint that matches the intended object level.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.loc.json-api"
        ]
      },
      {
        "id": "fact.loc.json-api.boundary",
        "statement": "The API does not expose all catalog information or all collection media, and a metadata or media URL does not remove item-specific rights and accuracy checks.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.loc.json-api"
        ]
      }
    ]
  },
  "language": "en",
  "category": "public-data-api",
  "state": "prepared",
  "canonicalUrl": "https://platoskallipolis.com/resources/public-data-apis/library-of-congress-json-api.json",
  "contentHash": "sha256:d110550597c6616e78c69cb1cff0fdfd341136f7586e206adf6ffeb6a3f32388",
  "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/library-of-congress-json-api.json",
    "authentication": "none",
    "robotsAllowed": true
  },
  "provenance": {
    "method": "primary-source",
    "sources": [
      {
        "id": "source.loc.json-api",
        "url": "https://www.loc.gov/apis/json-and-yaml/",
        "title": "JSON/YAML for loc.gov",
        "publisher": "Library of Congress",
        "observedAt": "2026-08-27T09:30:00Z"
      }
    ]
  },
  "observedAt": "2026-08-27T09:30:00Z",
  "freshness": {
    "policy": "max-age",
    "state": "current",
    "nextReviewAt": "2026-09-03T09:30:00Z",
    "maxAgeSeconds": 604800
  },
  "license": {
    "id": "source-terms-apply",
    "url": "https://www.loc.gov/legal/",
    "redistributionAllowed": false
  },
  "evidence": [
    {
      "id": "evidence.loc.json-api",
      "type": "source-claim",
      "url": "https://www.loc.gov/apis/json-and-yaml/",
      "observedAt": "2026-08-27T09:30:00Z"
    }
  ]
}