Tesla Gate:

These electrified barriers can be strategically placed to protect your most valuable assets or to create elaborate containment chambers. Anything unfortunate enough to touch an active Tesla Gate will feel the jolt of high-voltage electricity.

Tesla Gate Terminal:

To give you full control over your Tesla Gates, the mod introduces the Tesla Gate Terminal. The Terminal Interface allows you to toggle the Tesla Gates on and off, ensuring the safe passage for the authorized personnel or electrifying your defenses at the push of a button. You can access the Tesla Gate Terminal with the Security Credential.

Keycards:

This mod introduces six distinct keycards, each with its own clearance level:

Level 1 Keycard: Unrestricted (UR)

Level 2 Keycard: Restricted (RS)

Level 3 Keycard: Confidential (CF)

Level 4 Keycard: Secret (SC)

Level 5 Keycard: Top Secret (TS)

Level 6 Keycard: Cosmic Top Secret (CTS)

Keycard Readers

The readers grant access for 5 seconds when presented with the correct keycard.

While keycards are used in the recipe for the respective readers, they won't be used. Each crafting gives 4 Keycard Readers.

Buttons:

Similar to the Keycard Readers, the button also activates doors for 5 seconds, but don't require any keycard.

They can be crafted to be on the left or right of blocks when placed, and you can swap them.

Decontamination Checkpoint:

Going through a Decontamination removes any effects, like from potions and radiation. Also, if the gamerule is activated, your spawnpoint will be saved everytime you go through a Decontamination.

/gamerule deconCheckpoint true (false by default).

Hazmat Suit:

Wearing it makes you not affected by radiation.

Geiger Counter:

Can be used to detect radiation nearby.

Methyl isothiocyanate spray bottle:

Can be used to remove SCP-059-1 growth.

SCP-059:

(By S. D. Locke)

Can be found underground and emits an unknown radiation, named by the Foundation as Delta Radiation. Areas affected by Delta Radiation presents a fungal growth known as SCP-059-1. If you have contact with it, you become infected with SCP-059-1, the process of transformation in a SCP-059-1 instance is painless and your conciousness is maintaned, also, you become imune to Delta Radiation. If wearing a Hazmat Suit, SCP-059 can be contained inside a Containment Box.

SCP-079:

(By Unknown author)

The sentient artificial intelligence enters the game with the SCP Additions mod. This entity can manipulate doors if someone happens to give it the System Control.

SCP-294:

(By Agent Jackrabbit)

A seemingly ordinary coffee machine, but why does it have a keyboard in it? Try asking something. Be creative!
(SCP-294 is still Work in Progress, I started adding some outputs already but many more I have planned have not been added yet. New ones will come in future updates.)

SCP-330:

(By DrKondraki)

This peculiar item takes the form of a small, round stainless steel bowl full of individually wrapped pieces of candy and has a note taped to the side of the bowl with the message: "take no more than two, please!". When a player interacts with SCP-330 and attempts to take more than two candies from the bowl, the player will eventually die from bleeding.

Also, 4 different candies can be taken from the bowl and each candy offers unique abilities.

The Red Candy grants Regeneration.

The Green Candy grants Night Vision.

The Yellow Candy grants Jump Boost.

The Blue Candy grants Speed Boost.

If you take more than two candies, all the other candy you took will vanish. Not fair if you just come back to take it ;)

SCP-426:

(By Flah)

Hello! I'm SCP-426, and when a player interacts with me, they will also find themselves speaking about me in the first person. Just a step for them to also perceive themselves as toasters, just like me.

SCP-572:

(By DrClef)

Unleash the "power" of SCP-572, a seemingly ordinary katana that gives a deceptive sense of invincibility in those who wield it. Despite its lackluster craftsmanship, the sword has the ability to infuse its bearer with feelings of might, power, and invicibility, but that's the only ability it really has, despite being a terrible sword.

SCP-902:

(By AdminBright)

What is this noise?

SCP-914:

(By Dr Gears)

The clockwork machine! It can take any item and entity to be refined in 5 different settings. It can be found in a rare structure in the world.
(SCP-914 is still Work in Progress, new refinements will come in new updates.)

SCP-1176

(By Smapti)

The honey-making mummy is here! He might look quite dead, but his brain's still buzzing with activity, makes you wonder what he's dreaming about... anyway, instead of regular bodily fluids, this guy has honey flowing through his veins! If you got AB+ blood type, it'll keep you fed for a lot of time, but if you're not so lucky, brace yourself for some serious allergic reactions as the curse of the Mellified Man will make you perish. You can drink it directly from the sarcophagus (if you don't mind drinking directly from the source), or you can take it in bottles. Any vanilla recipe that uses regular honey bottles can use this sweety mysterious honey instead.

Also, you can check your blood type in your inventory! It will change everytime you respawn.

(I will try to find other SCPs that could make use of the Blood Type feature, but for now, only honey mummy uses it.)