{
 "slug": "anthropic-ai",
 "name": "anthropic-ai",
 "operator": "Anthropic",
 "operator_slug": "anthropic",
 "category": "ai-training",
 "category_label": "AI training crawlers",
 "robots_token": "anthropic-ai",
 "user_agent_substring": "anthropic-ai",
 "user_agent_example": "(no live crawler currently identifies with this string)",
 "respects_robots_txt": "n-a",
 "respects_robots_txt_label": "control token only — no crawler",
 "verification_method": "none",
 "verification_label": "no published verification method",
 "published_ip_ranges_url": null,
 "ip_ranges_endpoint": null,
 "ipv4_prefix_count": 0,
 "ipv6_prefix_count": 0,
 "what_it_is": "A legacy robots.txt token from before Anthropic consolidated on ClaudeBot. It is still widely present in robots.txt files and costs nothing to keep, but it is a control token rather than a bot you will see in logs.",
 "cost_of_blocking": "None. Nothing crawls under this name today; keeping the rule is harmless insurance.",
 "operator_docs": "https://support.anthropic.com/en/articles/8896518",
 "html_url": "https://www.pathwren.workers.dev/crawler/anthropic-ai.html",
 "json_url": "https://www.pathwren.workers.dev/crawler/anthropic-ai.json",
 "last_reviewed": "2026-09-01"
}