Track the status of Client Certificates.

[Hllrdm]

I need to track via SNMP information when client certificates become expired / revoked.
I couldn't find an OID for this case, so I decided to create my custom OID. To create a custom OID, I need to write a script to monitor revoked/expired client certificates. Does anyone have any experience in this case? Or maybe there is an already generated OID that I haven't seen before to monitor certificate expiration or revocation for clients.