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Custom Headers
Brave has reached the size where we would like to add brave to the User-Agent string. However, in testing this, we found that many sites don't work correctly with this UA.
We added a JS API to allow sites to detect brave. Unfortunately this doesn't work for Brave's partners who require the ability to detect the UA in an HTTP header.
In all cases, the header is the same for all users of Brave Desktop and therefore cannot be used to distinguish users.
The latest list can always be found at https://laptop-updates.brave.com/promo/custom-headers.
| Site | Header | Reason |
|---|---|---|
| eaff.com & subdomains | X-Brave-Partner: eaff |
Custom content for Brave users. |
| uphold.com & subdomains | X-Brave-Partner: uphold |
Shows different UI to Brave users for payments as a publisher. |
| grammarly.com & subdomain | X-Brave-Partner: grammarly |
If Yandex is the default search engine, we add a clid parameter to search requests to indicate that they are coming from Brave. Our clid is assigned by Yandex, so it looks like a random number but is actually the same for all users on a platform. On Android, you would see 2423859 in the URL and on desktop you would see 2353835.