copilot.microsoft.com

What it is

Microsoft's Copilot assistant on the web.

Why there's no full URL

Copilot's web app sets an origin-when-cross-origin policy, so other sites receive only https://copilot.microsoft.com/.

What traffic it represents

Clicks on links to your site that Copilot cited or suggested in an answer.

In Vireo

Vireo recognises this referrer as Copilot and counts these visits on the AI assistants card, next to the pages AI crawlers took from your site. It works on history you've already collected, not only from the day you install. See how it looks.

Sources

<meta name="referrer" content="origin-when-cross-origin"/>

Microsoft Copilot (page source, checked 2026-10-06)

Send only the origin for cross-origin requests and requests to less secure destinations (HTTPS→HTTP).

Referrer-Policy header - MDN