The classification was first used in SCP-927 on the Editthis wiki in 2008 it essentially meant that the SCP was a particularly dangerous keter. An SCP with this class will inevitably end the world. Used for SCPs that are impossible to contain, or are about to irrevocably break containment. Even the mere existence of Thaumiel-class objects is classified at the highest levels of the Foundation and their locations, functions, and current status are known to few Foundation personnel outside of the O5 Council. Thaumiel-class SCPs are anomalies that the Foundation uses to contain or counteract other SCPs or anomalous phenomena. A Keter SCP does not mean the SCP is dangerous, just that it is simply very difficult or costly to contain. The Foundation often can't contain these SCPs well due to not having a solid understanding of the anomaly, or lacking the technology to properly contain or counter it. Keter-class SCPs are anomalies that are exceedingly difficult to contain consistently or reliably, with containment procedures often being extensive and complex. Also, most SCPs generally fall into this class. Euclid is the Object Class with the greatest scope, and it's usually a safe bet that an SCP will be this class if it doesn't easily fall into any of the other standard Object Classes. Usually this is because the SCP is insufficiently understood, sentient, and/or inherently unpredictable. Classifying an SCP as Safe, however, does not mean that handling or activating it does not pose a threat.Įuclid-class SCPs are anomalies that require more resources to contain completely or where containment isn't always reliable. This is often due to the fact that the Foundation has researched the SCP well enough that containment does not require significant resources or that the anomalies require a specific and conscious activation or trigger. Safe-class SCPs are anomalies that are easily and safely contained.

Also note that the classes do not define how dangerous the anomaly is, but rather how difficult or easy it is to contain it.

As a note, any SCP that's autonomous, sentient and/or sapient is generally classified as Euclid, due to the inherent unpredictability of an object that can act or think on its own.

Safe, Euclid, Keter, Thaumiel, and Apollyon.

To most, there are just Safe, Euclid, Keter.

Scp containment breach difficulty