# Pool Operation Certificate **URL:** \ **Category:** Operate a Stake Pool\ **Created:** [14 August 2020 09:31 UTC](https://forum.cardano.org/t/pool-operation-certificate/38460 "2020-08-14T09:31:22Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![SaadZoul](https://avatars.discourse-cdn.com/v4/letter/s/ce73a5/32.png) [@SaadZoul](https://forum.cardano.org/u/SaadZoul)\ **Post date:** [14 August 2020 09:31 UTC](https://forum.cardano.org/t/pool-operation-certificate/38460/1 "2020-08-14T09:31:22Z")
Hello everyone, I have a question regarding pool operation certificate, but after hours of searching the internet, I could not find any resource that answers my question. So I am posting this question here. How do I know if my pool operation certificate has expired? Is there any cli command or any way to make sure that my pool is running on a valid & non-expired operational certificate? Any feedback is greatly appreciated. Saad. ---
**Author:** ![gabrield](https://avatars.discourse-cdn.com/v4/letter/g/85e7bf/32.png) [@gabrield](https://forum.cardano.org/u/gabrield)\ **Post date:** [14 August 2020 11:52 UTC](https://forum.cardano.org/t/pool-operation-certificate/38460/2 "2020-08-14T11:52:35Z")
I don’t know that you can do it from cardano-cli. But if you haven’t changed your prometheus config, from your block producer you can: ``` curl 127.0.0.1:12798/metrics ``` And then grep for _cardano\_node\_Forge\_metrics\_remainingKESPeriods\_int_ to get how many key evolutions you have left. All the _cardano\_node\_Forge\_metrics_ are about your operational certificate. ---
**Author:** ![SaadZoul](https://avatars.discourse-cdn.com/v4/letter/s/ce73a5/32.png) [@SaadZoul](https://forum.cardano.org/u/SaadZoul)\ **Post date:** [14 August 2020 18:20 UTC](https://forum.cardano.org/t/pool-operation-certificate/38460/3 "2020-08-14T18:20:52Z")
Ok fantastic! This is exactly what I was looking for. I followed your instruction and was able to verify the expiry KESPeriod and other useful information. Thanks for answering my question!