Multiple SCPs (most notably SCP-2000 and now SCP-3001) make use of something called a Scranton Reality Anchor.
However, I have (as of yet) been unable to find any information regarding the SRA other than the fact that it blocks reality-bending SCPs from doing their thing/breaking containment/whatever else SCPs like to do during their free time.
Besides the basic information given above, is there any more information as to what makes a Scranton Reality Anchor and how it works? For example, is there any technical documentation (preferably “canonical”* to the Foundation universe) that explains what they do?
Valorum is correct in that SCP does not have a set canon most of the authors agree on certain broad facts when they refer to some of the same items and the reality anchors are one such item but the only real agreement is that they anchor reality somehow
However SCPs themselves are usually only going to mention the item without explaining it the SCP format is not for exposition on the technology the foundation uses its about what an object is/does and how it is contained
this is contained in a J SCP
Its a blueprint, that is technically technical 😀