here are the rules, apparently, made by /x/, found via wikichan(/x/ created holder and SCP, apparently.)
SCP creepypasta is created in three steps:
1. Find creepy picture
2. Imagine what horrible things it could do to the world
3. Outline procedure to keep it contained.
/x/ has specified rules to make sure it doesn't get as fagged up as the Holders series eventually became.
Do not reuse specs.
Find the pic first.
Double-check your logic outside of the tubes.
Don't change up conditions.
Get approval, preferably via IRC, from six oldfags before posting. In the event of three users suggesting that it negatively reflects the series at large, delete or revise it at once.