X / ACCOUNTS & CHANNELS
CERT
Manage certificate login.
Syntax
X service Private message/msg X CERT ADD [fingerprint] | DEL <fingerprint> | LISTRequired access
- Signed in to X
How it works
ADD: Registers the TLS client certificate used by this connection; optional fingerprint must match it.
DEL: Removes the given fingerprint from your account.
LIST: Shows your registered fingerprints. An account may register up to 16 certificates.
Authentication: Registered certificates can sign in using SASL EXTERNAL. Each fingerprint belongs to one account.
Options
Parameters
- fingerprint
- The TLS client-certificate fingerprint.
Example commands
/msg X CERT ADDIf it is refused
- Connect with a TLS client certificate first.
- Only your current TLS certificate can be added.
- Certificate limit reached.
Reviewed 27 September 2026. Current service settings and access checks apply. For the service’s current help, use /msg X HELP CERT.