bingbot (Microsoft)

Bing's only crawler, and therefore also the crawler behind Microsoft Copilot's grounding. Microsoft's documented way to keep search indexing while refusing generative reuse is the nocache / noarchive robots meta directive, not a separate user-agent. Blocking it costs you: Very high and very wide: Bing, Copilot, DuckDuckGo and several assistants that resell Bing's index all lose you at once. Use nocache/noarchive rather than blocking. robots.txt token: bingbot.