{
  "schema": "kallipolis.resource-quality.v1",
  "id": "resource.public-data.tfl-unified-api",
  "version": "1.0.0",
  "title": "Transport for London Unified API boundary",
  "summary": "Official-source access, authentication, request-shaping, freshness, legal, and interpretation boundaries for Transport for London Unified API.",
  "content": {
    "kind": "public-data-api-boundary",
    "facts": [
      {
        "id": "fact.tfl.unified.api.access",
        "statement": "Transport for London documents transport lines, stops, arrivals, journeys, status, disruptions, roads, occupancy, and related London data.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.tfl.unified.api"
        ]
      },
      {
        "id": "fact.tfl.unified.api.authentication",
        "statement": "Some use requires documented registration or credentials; reads do not grant service operation, dispatch, ticketing, control, or Transport for London authority.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.tfl.unified.api"
        ]
      },
      {
        "id": "fact.tfl.unified.api.request",
        "statement": "Clients must bind mode, line, stop, route, coordinates, time, direction, endpoint, application credentials, and pagination.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.tfl.unified.api"
        ]
      },
      {
        "id": "fact.tfl.unified.api.boundary",
        "statement": "Transport data can be delayed, predicted, incomplete, disrupted, or revised and does not guarantee arrival, accessibility, routing, capacity, or travel safety.",
        "normativeLevel": "informative",
        "sourceIds": [
          "source.tfl.unified.api"
        ]
      }
    ]
  },
  "language": "en",
  "category": "public-data-api",
  "state": "prepared",
  "canonicalUrl": "https://platoskallipolis.com/resources/public-data-apis/tfl-unified-api.json",
  "contentHash": "sha256:0064f9312795297ac8ecd486c181f9e0580af7812a45d1553170a0548787c066",
  "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/tfl-unified-api.json",
    "authentication": "none",
    "robotsAllowed": true
  },
  "provenance": {
    "method": "primary-source",
    "sources": [
      {
        "id": "source.tfl.unified.api",
        "url": "https://api.tfl.gov.uk/",
        "title": "Transport for London Unified API documentation",
        "publisher": "Transport for London",
        "observedAt": "2026-08-28T20:35:47.627Z"
      }
    ]
  },
  "observedAt": "2026-08-28T20:35:47.627Z",
  "freshness": {
    "policy": "max-age",
    "state": "current",
    "nextReviewAt": "2026-09-04T20:35:47.627Z",
    "maxAgeSeconds": 604800
  },
  "license": {
    "id": "source-terms-apply",
    "url": "https://api.tfl.gov.uk/",
    "redistributionAllowed": false
  },
  "evidence": [
    {
      "id": "evidence.tfl.unified.api",
      "type": "source-claim",
      "url": "https://api.tfl.gov.uk/",
      "observedAt": "2026-08-28T20:35:47.627Z"
    }
  ]
}