Are you sure it's them and not one of their users hooking up to an MCP toolbox?
Discussion
Sure is a strong word when going purely on hse agent but it is ClaudeBot which is their craqling agent UA (https://support.anthropic.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler)
Interesting!