How to disable creepers from damaging buildings?

the gamerule is mobGriefing

if you have a Fabric server with Carpet, there's explosionNoBlockDamage

tyvm, do i need to reload or restart?

no restart/reload is needed with gamerules 👍

ty

if you change something in server.properties or some config files you'll need to restart

I’d suggest to use a datapack to achieve this as mob griefing is needed for many things to function. A good example is villager picking up items and farming @West African Crocodile

Ah, got a link to a guide I can read ?

I'm running paper

No example on top of my head

I found a better solution for other people looking.

EssentialsX plugin,

protect:

# General physics/behavior modifications. Set these to true to disable behaviors.
prevent:
lava-flow: false
water-flow: false
water-bucket-flow: false
fire-spread: true
lava-fire-spread: true
lava-itemdamage: false
flint-fire: false
lightning-fire-spread: true
portal-creation: false
tnt-explosion: false
tnt-playerdamage: false
tnt-itemdamage: false
tnt-minecart-explosion: false
tnt-minecart-playerdamage: false
tnt-minecart-itemdamage: false
fireball-explosion: false
fireball-fire: false
fireball-playerdamage: false
fireball-itemdamage: false
witherskull-explosion: false
witherskull-playerdamage: false
witherskull-itemdamage: false
wither-spawnexplosion: false
wither-blockreplace: false
creeper-explosion: true
creeper-playerdamage: false
creeper-itemdamage: true
creeper-blockdamage: true

change those creeper flags

then essentials reload to reloag config in the console