Highways England API

{
  "service_type": "platform",
  "base_url": "https://highwaysengland.co.uk",
  "auth_method": "none",
  "auth_config": {},
  "endpoints": [],
  "pricing_model": {
    "type": "free",
    "details": {
      "note": "Government agency — public data and APIs are provided free of charge"
    }
  },
  "rate_limits": {},
  "capabilities": [
    "Road network data",
    "Traffic and travel information",
    "Roadworks and closures",
    "Strategic road network management",
    "Open government data sharing"
  ],
  "raw_analysis": "Highways England (now National Highways) is the UK government-owned company responsible for operating, maintaining and improving England's strategic road network (motorways and major A-roads). The referenced domain highwaysengland.co.uk represents the organization's main web presence, not a traditional API developer portal.\n\nThe organization does provide public APIs and open data, most notably the National Highways API (previously Highways England API) at api.data.gov.uk or via the Department for Transport's data services. These APIs expose data on traffic incidents, roadworks, closures, variable speed limits, and journey times. National Highways also maintains the WebTRIS traffic flow database and the DATEX II feeds for real-time traffic data.\n\nAuthentication: Most public endpoints are free and do not require authentication, though some datasets may require registration via the UK government's data.gov.uk API key system or an OAuth2 token for enhanced access.\n\nMaturity: As a government agency, National Highways has well-established data-sharing practices. The APIs are relatively mature but documentation may be scattered across different government portals (data.gov.uk, nationalhighways.co.uk, api.data.gov.uk). There is no unified, self-service API portal at highwaysengland.co.uk itself.\n\nIntegrations: Data is consumed by GPS/navigation providers (Google, TomTom, Waze), logistics companies, transport planners, and researchers. Formats include JSON, XML, and DATEX II.\n\nPricing: Free, as this is publicly funded government data.\n\nRate limits: Not explicitly documented for all endpoints; standard government API fair-use limits likely apply.\n\nRecommendation: For programmatic access, look at the National Highways developer resources rather than the main website. The main site is informational and not an API endpoint."
}

2/3 tests passed

{
  "overall": 62,
  "dimensions": {
    "token_efficiency": 8.5,
    "first_try_success": 7.0,
    "response_parseability": 6.5,
    "error_clarity": 5.5,
    "doc_quality": 6.0,
    "auth_simplicity": 9.0,
    "latency": 6.0,
    "consistency": 7.0
  },
  "pricing_normalized": {
    "model": "free",
    "note": "Government agency — public data and APIs provided free of charge. No pricing tiers to normalize."
  },
  "issues": [
    "No llms.txt file (404) — agents lack a machine-readable capability/onboarding manifest",
    "No API endpoint details provided in the capability data, only prose descriptions",
    "robots.txt is minimal (only a Sitemap directive) — limited guidance on crawl/access policy",
    "Website root latency ~811ms exceeds the 500ms fast threshold for token-efficient agent browsing"
  ],
  "recommendations": [
    "Publish an llms.txt (or lilms.txt) describing available data feeds, endpoints, and terms",
    "Expose documented, structured API endpoints (JSON/RDF) rather than only HTML pages",
    "Expand robots.txt with clear crawl guidance and rate expectations for agents",
    "Improve target latency or provide cached/static endpoints for agent access"
  ]
}