SCP Item Classes

A class is assigned to each SCP object in order to warn personnel of the difficulty of its containment, i.e. the measures put in place by the Foundation so that it does not affect or threaten the rest of the world.

**Warning:** The Class only indicates the *difficulty of confining* an object, and not its *dangerousness* ! For this, the French-speaking branch of the Foundation has another indicator: the Threat Level .

The classification of a specific anomaly may be updated and modified if new information is discovered on the functioning of an anomaly, or if it changes in nature or properties.

## Main Classes

These classes are the most commonly assigned to SCP objects and cover the majority of Foundation contained anomalies.

### Safe

Safe-class objects are anomalies that are either well enough understood to be safely contained permanently, or have properties that only activate in response to an intentional outside action.

However, an object classified as Safe is not necessarily harmless and handling it or coming into contact with it without respecting the procedures in force can prove to be dangerous.

Below is a list of the foundation's top 25 Safe Classroom articles:

* SCP-028-FR
* SCP-032-FR
* SCP-079-FR
* SCP-369-FR
* SCP-204-FR
* SCP-024-FR
* SCP-009-FR
* SCP-134-FR
* SCP-002-FR
* SCP-999
* SCP-181-FR
* SCP-343
* SCP-281-FR
* SCP-500
* SCP-914
* SCP-303-FR
* SCP-5000
* SCP-008-FR
* SCP-020-FR
* SCP-113-FR
* SCP-225-FR
* SCP-260-FR
* SCP-131
* SCP-1762
* SCP-288-FR

For a full list of Safe-class SCP objects, click **here:** https://scp-wiki.wikidot.com/system:page-tags/tag/safe#pages

### Euclid

Euclid-class objects are anomalies that are either poorly understood or inherently unpredictable, such that precise containment is required to block their effects. Euclid is the intermediate class which denotes an object capable of breaking its confinement, but normally unable to do so if effective procedures are established and strictly followed.

This class can be used as the default class for newly discovered and still unrecognized SCP objects, awaiting sufficient information to assign them to a more appropriate class.

It should be noted that anomalies endowed with autonomy , conscience and/or sapience are generally classified Euclid at least, because an object able to act or think by itself is by definition likely to break its confinement.

Below is the list of the 25 top Euclid class papers on the foundation:

* SCP-173
* SCP-096
* SCP-006-FR
* SCP-140-FR
* SCP-049
* SCP-119-FR
* SCP-300-FR
* SCP-137-FR
* SCP-087
* SCP-3008
* SCP-701
* SCP-294
* SCP-030-FR
* SCP-408-FR
* SCP-025-FR
* SCP-404-FR
* Dr. Clef's proposal
* SCP-499-FR
* SCP-148-FR
* SCP-500-FR
* SCP-3001
* SCP-054-FR
* SCP-023-FR
* SCP-073
* SCP-092-FR

For a full list of Euclid-class SCP objects on the site, click **here:** https://scp-wiki.wikidot.com/system:page-tags/tag/euclid#pages

### Keter

Keter-class objects are anomalies that require advanced and complex procedures to contain, or that cannot be effectively contained by the Foundation with its current knowledge and capabilities.

These anomalies are generally considered to be the most problematic due to the danger they can pose either to the lives of living beings or to the maintenance of secrecy around the anomalous world. As a result, the Foundation invests significant efforts in research to develop more effective containments for these anomalies or even, as a last resort, neutralize their anomalous effects or destroy them.

Below is the list of the 25 highest Keter class articles on the foundation:

* SCP-101-FR
* ●●|●●●●●|●●|●
* SCP-682
* SCP-2317
* SCP-076
* SCP-299-FR
* SCP-055
* SCP-106
* Dr. Gray's proposal
* SCP-231
* SCP-035
* SCP-236-FR
* Proposal of Dr. Johannes
* SCP-199-FR
* SCP-264-FR
* SCP-062-FR
* SCP-098-FR
* SCP-185-FR
* SCP-198-FR
* REMOVED BY PROTOCOL 4000-ESHU
* Dr. Clef's proposal
* SCP-035-FR
* SCP-255-FR
* SCP-096-FR
* SCP-1048For a full list of Keter class items on the site, click **here:** https://scp-wiki.wikidot.com/system:page-tags/tag/keter#pages

### Thaumiel

Thaumiel-class objects are highly secretive and extremely rare anomalies that are used by the Foundation to contain or counter the effects of other anomalies that would otherwise be very difficult or impossible to contain. The very existence of the Thaumiel class is classified at the highest level, and their location, function, and current status are known only to high-ranking members of the Foundation.

Below is a list of the 25 highest Thaumiel class articles on the foundation:

* SCP-3000
* SCP-2000
* Proposal by Henry Von Kartoffen
* SCP-120-FR
* SCP-4098
* Tanhony's proposal
* SCP-254-FR
* SCP-3936
* SCP-370-FR
* SCP-179
* SCP-2003
* SCP-567-FR
* SCP-3309
* SCP-3480
* SCP-068-FR
* SCP-354-FR
* SCP-2117
* Proposal of djkaktus I
* SCP-5370
* SCP-5016
* SCP-2798
* Proposal by Kate McTiriss
* SCP-597-FR
* SCP-4242
* Solvex proposal

For a full list of Thaumiel class items on the foundation, click **here:** https://scp-wiki.wikidot.com/system:page-tags/tag/thaumiel#pages

## Other Classes

The following object classes are used to designate more specific cases than the main four (Safe, Euclid, Keter and Thaumiel) and are used more rarely, but are nonetheless official and important.

### Neutralized

Neutralized anomalies are those that have lost their anomalous properties, either because they were intentionally or accidentally destroyed or deactivated, or because they spontaneously ceased to manifest anomalous effects.

Documentation regarding neutralized anomalies is kept for the purpose of archiving information, in case they regain their anomalous properties or reappear in the future.

Below is a list of the 25 highest Neutralized class articles on the foundation:

* Proposal by Drs Gemini and Tesla
* SCP-213-FR
* SCP-3999
* SCP-214-FR
* SCP-096-FR
* SCP-333-FR
* SCP-1762
* SCP-1730
* SCP-286-FR
* SCP-360-FR
* SCP-336-FR
* SCP-364-FR
* SCP-244-FR
* SCP-410-FR
* SCP-234-FR
* SCP-261-FR
* SCP-397-FR
* SCP-266-FR
* SCP-3043
* SCP-502-FR
* SCP-338-FR
* SCP-3890
* SCP-392-FR
* SCP-385-FR
* SCP-524-FR

For a full list of Neutralized class items on the site, click **here:** https://scp-wiki.wikidot.com/system:page-tags/tag/neutralized#pages

### Explained

Explained anomalies are entities or phenomena that were classified as anomalous when discovered but which the Foundation now fully understands, because their effects can now be explained by conventional science or they have been identified as false or poorly studied.

For a full list of Class Explained articles on the site, click **here:** https://scp-wiki.wikidot.com/system:page-tags/tag/explained#pages

### Esoteric Classes

Some objects require a very atypical containment or one that does not correspond to any of the other classes: it is then necessary to create a new one just for them. These cases are very rare and the Foundation will always prefer to use one of the main classes if possible, for clarity and ease of understanding.

Some anomalies also possess anomalous properties that either directly influence the documents dealing with them or require them to be written in a precise manner to be properly contained, forcing their report to display a certain class against the Foundation's wishes. We then speak of "narrative classes", another variety of non-standard classes.

For a full list of esoteric class items on the site, click **here:** https://scp-wiki.wikidot.com/system:page-tags/tag/esoteric#pages

## FAQs

### What is the "Box Test"?

The "Box Test" is a thought exercise sometimes used to find the most appropriate class for an object. The test is as follows:

* If you put the item in a box, leave the lid open, or close it without additional protection, and nothing bad happens, it's probably **Safe** .
* If you put the object in a box but have to close the lid with a padlock or chains to keep it there, it's probably **Euclid** .
* If you lock the object in a box but a padlock, chains, and several layers of steel aren't enough to be sure it will stay there, it's probably **Keter** .
* If your object *is* the box, then it's probably **Thaumiel** .

It should be noted that a conscious or intelligent object can very hardly be classified below Euclid: such an entity could also happen to be intelligent enough to circumvent its containment procedures and/or cease to cooperate with the Foundation within the framework of its confinement, which gives it an unpredictable character which must be taken into account in its classification.

### In what case are Esoteric Classes exactly used?

An author can decide to assign to his object an unofficial class not appearing on this list, which he will have created for the occasion or taken from another isolated report. These cases are nevertheless very rare and considered as a form of " format deviation ", and must for this reason solidly justify their use. Many site members are likely to downvote an article that does not sufficiently justify its use of a non-standard object class.

### What if I don't agree with the choice of a certain class for an SCP?

The definition of object classes is intentionally vague to leave it up to authors to decide which classification best suits their object. If you read an SCP article and think its class mismatches it, feel free to start a discussion in the comments on the page to see what other community members think. If the explanation is not satisfactory enough for your taste, do not hesitate to debate and express your opinion on the subject or to downvote the page to indicate your disagreement while waiting for the inconsistency to be repaired.