{
  "dataset": "crawlers",
  "record": {
    "id": "claude-user",
    "name": "Claude-User",
    "operator": "Anthropic",
    "purpose": "inference",
    "ua_substring": "Claude-User",
    "robots_token": "Claude-User",
    "respects_robots": true,
    "verify": "reverse DNS to an Anthropic host",
    "notes": "Fetches a page in real time when a Claude user's prompt references it. User-initiated, not bulk crawling.",
    "canonical_name": "Claude-User",
    "user_agent_token": "Claude-User",
    "ua_full": {
      "value": null,
      "verify_status": "verify-against-primary-at-build",
      "source_hint": "https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler"
    },
    "bot_type": "user-action-fetcher",
    "bot_type_extension": null,
    "opt_out_mechanism": "robots.txt disallow (User-agent: Claude-User)",
    "published_ip_range_url": "https://claude.com/crawling/bots.json",
    "asn": {
      "value": null,
      "verify_status": "verify-against-primary-at-build",
      "source_hint": "https://claude.com/crawling/bots.json"
    },
    "reverse_dns_suffix": {
      "value": null,
      "verify_status": "verify-against-primary-at-build",
      "source_hint": "https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler"
    },
    "supports_web_bot_auth": {
      "value": null,
      "verify_status": "verify-against-primary-at-build",
      "source_hint": "https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler"
    },
    "signature_agent_domain": {
      "value": null,
      "verify_status": "verify-against-primary-at-build",
      "source_hint": "https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler"
    },
    "jwks_url": {
      "value": null,
      "verify_status": "verify-against-primary-at-build",
      "source_hint": "https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler"
    },
    "verification_methods": [
      "published-IP-range",
      "reverse-DNS"
    ],
    "crawl_traffic_share": {
      "value": null,
      "verify_status": "verify-against-primary-at-build",
      "source_hint": "https://radar.cloudflare.com/bots"
    },
    "targeted_content_type": "HTML, text",
    "documentation_url": "https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler",
    "first_seen_date": {
      "value": null,
      "verify_status": "verify-against-primary-at-build",
      "source_hint": "https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler"
    },
    "last_verified_date": "2026-06-15",
    "block_vs_allow_recommendation": "allow (default) — user-initiated fetch on behalf of a real Claude user; blocking degrades that user's experience without protecting against training.",
    "citation_referral_value": "medium (fetches in response to a user; can surface your page to that user)",
    "cloudflare_verified_category": {
      "value": null,
      "verify_status": "verify-against-primary-at-build",
      "source_hint": "https://radar.cloudflare.com/bots/directory/claude-user"
    },
    "status": "active",
    "triples": [
      [
        "Claude-User",
        "operated_by",
        "Anthropic"
      ],
      [
        "Claude-User",
        "has_bot_type",
        "user-action-fetcher"
      ],
      [
        "Claude-User",
        "verified_via",
        "published-IP-range"
      ],
      [
        "Claude-User",
        "verified_via",
        "reverse-DNS"
      ]
    ],
    "attribute_sources": [
      {
        "claims": [
          "user_agent_token",
          "robots_token",
          "published_ip_range_url",
          "documentation_url",
          "respects_robots"
        ],
        "source": "https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler",
        "last_verified": "2026-06-15"
      }
    ]
  }
}