`MicrosoftPreview`

Bing says MicrosoftPreview generates page snapshots for Microsoft products, with desktop and mobile variants. The published strings contain MicrosoftPreview/2.0. The help URL HTML is an application shell. The article was read from the help API that page loads, ArticleId 8c184ec0. The page says robots.txt files can be configured to tell Bing crawlers how to interact with the site. It does not say that this crawler obeys every directive. This check matches the whole token and still reports the RFC 9309 decision.

robots.txt token: MicrosoftPreview
Operator: Microsoft
Kind: preview
robots.txt: tells_how_to_interact. The vendor says a robots.txt file can be configured to tell this crawler how to interact with the site. The cited page does not say that the crawler obeys every directive.
HTTP user-agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; MicrosoftPreview/2.0; +https://aka.ms/MicrosoftPreview) Chrome/W.X.Y.Z Safari/537.36 The page also prints a mobile string: Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/W.X.Y.Z Mobile Safari/537.36 (compatible; MicrosoftPreview/2.0; +https://aka.ms/MicrosoftPreview). W.X.Y.Z is the page's placeholder. The page does not print a separate robots.txt User-agent line.
IP list: None on the cited page. The page says user-agent strings are easy to spoof, so a matching string does not prove the request is from Bing. It links to the Verify Bingbot tool and to the verification-methods article. This article does not publish an IP list. Botcard does not call that tool and does not copy addresses.
Source: Overview of Bing crawlers (user agents). Retrieved 2026-10-18.

JSON

curl -s https://whosthatbot.com/v1/crawlers/microsoftpreview

Check this token

tools/call with name check_robots is the same check at POST /mcp. The pasted file disallows MicrosoftPreview on /docs and allows *. The call does not fetch a host.

curl -s https://whosthatbot.com/mcp -H 'content-type: application/json' -H 'accept: application/json, text/event-stream' -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"check_robots","arguments":{"robots_txt":"User-agent: MicrosoftPreview\nDisallow: /\n\nUser-agent: *\nAllow: /\n","path":"/docs","ids":["microsoftpreview"]}}}'

That call returns fetched_target false. This row is disallow via group MicrosoftPreview, rule Disallow: /.