This is a mod that allows for server-side configuration of creeper explosion behavior for fabric.
# Vanilla Behavior, destroys blocks according to mobGriefing gamerule, but also explodes a firework
gamerule creeperExplosionBehavior FIREWORK_DESTROY_EXPLOSION
# Creeper explodes normally but does not destroy nearby blocks, similar to mobGriefing=false, but also explodes a firework
gamerule creeperExplosionBehavior FIREWORK_KEEP_EXPLOSION
# Creeper does not explode but deals damage to nearby entities, but also explodes a firework
gamerule creeperExplosionBehavior FIREWORK_DAMAGE_EXPLOSION
gamerule creeperExplosionBehavior DEFAULT
# A firework explodes where the creeper was standing instead of exploding
gamerule creeperExplosionBehavior FIREWORK_ONLY
# Vanilla Behavior, destroys blocks according to mobGriefing gamerule
gamerule creeperExplosionBehavior DESTROY_EXPLOSION
# Creeper explodes normally but does not destroy nearby blocks, similar to mobGriefing=false
gamerule creeperExplosionBehavior KEEP_EXPLOSION
# Creeper does not explode but deals damage to nearby entities
gamerule creeperExplosionBehavior DAMAGE_EXPLOSION
# Creepers simply vanish from existance before exploding
gamerule creeperExplosionBehavior NONE