What is “Cloudflare-Diagnostics”?

I just noticed a blocked request from a Cloudflare IP address with user agent “Cloudflare-Diagnostics” in my firewall log. Can anyone from Cloudflare tell me what this is about? It’s not documented anywhere and I found only one other discussion about this user agent and no real answer was given.

Hi @hero, that sounds legitimate. If you’ve contacted support, we have a helperbot that runs a series of tests based on what you reported for our engineers to better respond to you with details.

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