SCP Containment Procedures

All anomalous objects, entities, and phenomena requiring Special Containment Procedures are assigned an Object Class. An Object Class is a part of the standard SCP template and serves as a rough indicator for how difficult an object is to contain. In universe, Object Classes are for the purposes of identifying containment needs, research priority, budgeting, and other considerations. An SCP's Object Class is determined by a number of factors, but the most important factors are the difficulty and the purpose of its containment.

Primary Classes

These are the most common Object Classes used in SCP articles, and make up the bulk of the objects.

Safe

Safe-class SCPs are anomalies that are easily and safely contained. 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. Classifying an SCP as Safe, however, does not mean that handling or activating it does not pose a threat.

For a complete list of Safe-class articles on the site, click here.

Euclid

Euclid-class SCPs are anomalies that require more resources to contain completely or where containment isn't always reliable. Usually this is because the SCP is insufficiently understood or inherently unpredictable. 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.

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

For a complete list of Euclid-class articles on the site, click here.

Keter

Keter-class SCPs are anomalies that are exceedingly difficult to contain consistently or reliably, with containment procedures often being extensive and complex. 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. A Keter SCP does not mean the SCP is dangerous, just that it is simply very difficult or costly to contain.

For a complete list of Keter-class articles on the site, click here.

Thaumiel

Thaumiel-class SCPs are anomalies that the Foundation specifically uses to contain other SCPs. 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.

For a complete list of Thaumiel-class articles on the site, click here.

Secondary Classes

The following object classes are less frequently used, and designate anomalies with unusual containment requirements.

Apollyon

Apollyon-class SCPs are anomalies that cannot be contained, are expected to breach containment imminently, or some other similar scenario. Such anomalies are usually associated with world-ending threats or a K-Class Scenario of some kind, and require a massive effort from the Foundation to deal with.

For a complete list of Apollyon-class articles on the site, click here.

Archon

Archon-class SCPs are anomalies that could theoretically be contained but are best left uncontained for some reason. Archon SCPs may be a part of consensus reality that is difficult to fully contain, or may have adverse effects if put into containment. These SCPs are not uncontainable - the defining feature of the class is that the Foundation chooses to not put the anomaly into containment.

For a complete list of Archon-class articles on the site, click here.

Ticonderoga

Ticonderoga-class SCPs cannot be contained, but also do not need to be contained. While these anomalies are similar to Archon-class SCPs in that their containment is unnecessary, Ticonderoga-class SCPs are distinguished by also not being containable given the Foundation's current knowledge and resources. This may be due to their widespread or ubiquitous occurance on Earth, despite the general public remaining unaware of their existence or anomalous nature, although the Ticonderoga class also includes extraterrestrial anomalies beyond the current reach of the Foundation.

For a complete list of Ticonderoga-class articles on the site, click here.

Non-Standard Object Classes

Most of the following Object Classes indicate that an SCP has not yet been assigned a standard object class, or that it was previously assigned a Standard Object Class but no longer requires containment. There are also additional Object Classes that are used less frequently than the ones listed above, known as Esoteric or Narrative object classes.

Explained

Explained SCPs are commonly articles about anomalies that are completely and fully understood, to the point where their effects are now explainable by mainstream science, or phenomena that have been debunked or falsely mistaken as an anomaly.

For a complete list of Explained-class articles on the site, click here.

Neutralized

Neutralized SCPs are former anomalies that are no longer anomalous, either through having been intentionally or accidentally destroyed or disabled.

For a complete list of Neutralized-class articles on the site, click here.

Decommissioned

Decommissioned SCPs are anomalies that have been intentionally destroyed or stripped of their anomalous properties by the SCP Foundation. As the Foundation usually tries to contain rather than neutralize anomalous objects, this object class is only used when it is not possible to fully contain an anomaly, or when excessive expenditure of resources is required to keep an anomaly in containment. Decommissioning may also be performed for ethical reasons, particularly when containment necessitates extreme suffering or is unable to prevent excessive loss of life. To avoid any unnecessary losses, decommissioning anomalies requires authorization from a higher authority, such as the O5 Council, the Ethics Committee, or the Decommissioning Department.

For a complete list of Decommissioned articles on the site, click here.

Pending

SCP articles that have not yet been assigned an object class may be labelled as Pending. This is used to indicate that the Foundation does not currently have enough information to assign an object class to the anomaly. This is a deliberate decision to emphasise that research is ongoing, and isn't the same as the author not knowing which object class to assign!

For a complete list of Pending-class articles on the site, click here.

Uncontained

SCPs that are not yet contained may be assigned an object class, often Keter, but in some articles Uncontained is used in place of an object class to emphasise that ongoing effort is required to establish or restore containment.

For a complete list of uncontained SCP objects on the site, some of which use Uncontained in place of an object class, click here.

Esoteric Object Classes

Additional Object classes not listed above are generally created to further the narrative in a particular SCP and only used once, and so are referred to as Esoteric or Narrative Object Classes. Esoteric object classes that are used often enough may eventually meet the requirements to be added to the list of Secondary Classes above. It is recommended to use one of the Primary Object Classes listed here for most SCPs, only using another object class if there's a good reason to justify it in the article.

For a comprehensive list of Esoteric Object Classes and the articles that use them, click here.

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