# cf.tls\_client\_auth.cert\_presented

`cf.tls_client_auth.cert_presented` Boolean

Returns `true` when a request presents a certificate (valid or not).

This field is only filled in if the request includes a client certificate for [mTLS authentication](https://developers.cloudflare.com/ssl/client-certificates/enable-mtls/).

Categories:

* Request
* mTLS
