Imprison

is_shown = scope:puppet_or_actor ?= {
	this != scope:recipient
	OR = {
		AND = {
			has_title = title:e_minister_of_justice
			scope:recipient = {
				tgp_is_any_minister = no
				liege ?= {
					basic_allowed_to_imprison_character_trigger = {
						CHARACTER = scope:recipient
					}
				}
			}
		}
		basic_allowed_to_imprison_character_trigger = {
			CHARACTER = scope:recipient
		}
	}
	trigger_if = {
		limit = {
			is_ai = yes
			NOT = {
				puppeteer ?= {
					is_ai = no
				}
			}
		}
		trigger_if = {
			limit = {
				has_realm_law_flag = imprisonment_toggle_enable
			}
			has_realm_law_flag = imprisonment_toggle_on
		}
		is_imprisoned = no
	}
}
trigger_if = {
	limit = {
		scope:recipient = {
			is_courtier_of = scope:puppet_or_actor
		}
	}
	NOT = {
		scope:recipient.host = {
			any_foreign_court_guest = {
				this = scope:recipient
			}
		}
	}
}

As written in game/common/character_interactions/00_prison_interactions.txt.

scope:puppet_or_actor = {
	trigger_if = {
		limit = {
			has_title = title:e_minister_of_justice
			scope:recipient = {
				tgp_is_any_minister = no
			}
			NOT = {
				allowed_to_imprison_character_trigger = {
					CHARACTER = scope:recipient
				}
			}
		}
		top_liege = {
			allowed_to_imprison_character_trigger = {
				CHARACTER = scope:recipient
			}
		}
	}
	trigger_else = {
		allowed_to_imprison_character_trigger = {
			CHARACTER = scope:recipient
		}
	}
	trigger_if = {
		limit = {
			government_has_flag = government_is_nomadic
		}
		NOT = {
			has_realm_law = nomadic_authority_1
		}
	}
	trigger_if = {
		limit = {
			has_title = title:e_minister_of_justice
		}
		scope:recipient = {
			NOT = {
				is_close_or_extended_family_of = scope:puppet_or_actor.top_liege
			}
		}
	}
}
imprison_neutral_is_valid_showing_failures_only_triggers_trigger = yes
trigger_if = {
	limit = {
		scope:actor = scope:puppet_or_actor
	}
	custom_tooltip = {
		text = cannot_take_overt_hostile_actions_against_diarch.tt
		NOT = {
			scope:recipient ?= scope:puppet_or_actor.diarch
		}
	}
}
trigger_else = {
	custom_tooltip = {
		text = cannot_take_overt_hostile_actions_against_diarch.tt_puppeteer
		NOT = {
			scope:recipient ?= scope:puppet_or_actor.diarch
		}
	}
}
trigger_if = {
	limit = {
		scope:is_puppet_action ?= yes
	}
	scope:puppet_or_actor = {
		prestige >= liege_diarchy_surcharge_interaction_imprison_interaction_value
	}
}
trigger_if = {
	limit = {
		scope:is_puppet_action ?= yes
	}
	scope:puppet_or_actor = {
		treasury >= {
			value = 0
			if = {
				limit = {
					scope:puppet_or_actor = {
						has_title = title:e_minister_of_justice
					}
					scope:recipient = {
						NOT = {
							is_courtier_of = scope:puppet_or_actor
						}
					}
				}
				add = scope:puppet_or_actor.major_treasury_value
			}
		}
	}
}
scope:puppet_or_actor = {
	custom_description = {
		text = character_interactions_hostile_actions_disabled_delay
		NOT = {
			has_character_flag = flag_hostile_actions_disabled_delay
		}
	}
	trigger_if = {
		limit = {
			scope:actor = {
				is_ai = no
			}
		}
		scope:recipient = {
			trigger_if = {
				limit = {
					has_government = landless_adventurer_government
					reverse_has_opinion_modifier = {
						target = scope:puppet_or_actor
						modifier = eviction_ignored_opinion
					}
				}
				is_travelling = no
			}
		}
	}
	trigger_else = {
		OR = {
			has_imprisonment_reason = scope:recipient
			any_character_struggle = {
				involvement = involved
			}
		}
	}
}

As written in game/common/character_interactions/00_prison_interactions.txt.

on_send = scope:puppet_or_actor = {
	add_character_flag = {
		flag = flag_hostile_actions_disabled_delay
		days = 10
	}
}
on_accept = if = {
	limit = {
		scope:is_puppet_action ?= yes
	}
	scope:puppet_or_actor = {
		if = {
			limit = {
				liege_diarchy_surcharge_interaction_imprison_interaction_value > 0
			}
			add_prestige = {
				value = {
					add = liege_diarchy_surcharge_interaction_imprison_interaction_value
					max = prestige
					multiply = -1
				}
			}
		}
		if = {
			limit = {
				has_title = title:e_minister_of_justice
				scope:recipient = {
					NOT = {
						is_courtier_of = scope:puppet_or_actor
					}
				}
			}
			remove_treasury = scope:puppet_or_actor.major_treasury_value
		}
	}
}
scope:puppet_or_actor = {
	if = {
		limit = {
			has_title = title:e_minister_of_justice
		}
		if = {
			limit = {
				NOR = {
					has_imprisonment_reason = scope:recipient
					scope:recipient.liege = {
						has_imprisonment_reason = scope:recipient
					}
					scope:hook = yes
				}
				any_character_situation = {
					situation_type = dynastic_cycle
					situation_top_has_catalyst = catalyst_minister_imprison
				}
			}
			save_scope_value_as = {
				name = use_strife_not_tyranny
				value = yes
			}
			situation:dynastic_cycle = {
				trigger_situation_catalyst = {
					catalyst = catalyst_minister_imprison
					character = scope:recipient
				}
			}
		}
		if = {
			limit = {
				government_allows = merit
			}
			change_merit = {
				value = minor_merit_gain
				multiply = scope:recipient.highest_held_title_tier
			}
		}
		if = {
			limit = {
				government_has_flag = government_has_influence
			}
			change_influence = {
				value = minor_influence_gain
				multiply = scope:recipient.highest_held_title_tier
			}
		}
		scope:recipient.liege = {
			if = {
				limit = {
					has_imprisonment_reason = scope:recipient
				}
				consume_imprisonment_reasons = scope:recipient
			}
		}
	}
}
if = {
	limit = {
		scope:hook = yes
	}
	scope:puppet_or_actor = {
		use_hook = scope:recipient
	}
}
illegal_imprisonment_dread_effect = yes
imprison_court_chaplain_consequences_effect = yes
imprison_HoF_consequences_effect = yes
scope:recipient = {
	if = {
		limit = {
			is_a_faction_member = yes
			liege = scope:puppet_or_actor
		}
		joined_faction = {
			save_scope_as = retaliating_faction
		}
	}
}
imprison_character_effect = {
	TARGET = scope:recipient
	IMPRISONER = scope:puppet_or_actor
}
imprison_attempt_escalates_rivalry_effect = yes
scope:puppet_or_actor = {
	trigger_event = char_interaction.0231
	if = {
		limit = {
			has_imprisonment_reason = scope:recipient
		}
		stress_and_fulfillment_impact = {
			compassionate = minor_stress_impact_gain
			forgiving = minor_stress_impact_gain
		}
	}
	else = {
		stress_and_fulfillment_impact = {
			just = medium_stress_impact_gain
			compassionate = medium_stress_impact_gain
		}
		if = {
			limit = {
				exists = scope:retaliating_faction
			}
			scope:retaliating_faction = {
				imprisonment_retribution_start_faction_war_if_valid = yes
			}
		}
	}
}
if = {
	limit = {
		scope:puppet_or_actor = {
			has_character_flag = flag_hostile_actions_disabled_delay
		}
	}
	scope:puppet_or_actor = {
		remove_character_flag = flag_hostile_actions_disabled_delay
	}
}
if = {
	limit = {
		NOT = {
			scope:puppet_or_actor = {
				has_imprisonment_reason = scope:recipient
			}
		}
		scope:recipient = {
			is_landed_or_landless_administrative_or_theocratic = yes
		}
	}
	add_clan_unity_interaction_effect = {
		CHARACTER = scope:puppet_or_actor
		TARGET = scope:recipient
		VALUE = major_unity_loss
		DESC = clan_unity_imprison.desc
		REVERSE_NON_HOUSE_TARGET = no
	}
}
else_if = {
	limit = {
		NOT = {
			scope:puppet_or_actor = {
				has_imprisonment_reason = scope:recipient
			}
		}
		scope:recipient = {
			is_landed_or_landless_administrative_or_theocratic = no
		}
	}
	add_clan_unity_interaction_effect = {
		CHARACTER = scope:puppet_or_actor
		TARGET = scope:recipient
		VALUE = medium_unity_loss
		DESC = clan_unity_imprison.desc
		REVERSE_NON_HOUSE_TARGET = no
	}
}
else = {
	add_clan_unity_interaction_effect = {
		CHARACTER = scope:puppet_or_actor
		TARGET = scope:recipient
		VALUE = minor_unity_loss
		DESC = clan_unity_imprison.desc
		REVERSE_NON_HOUSE_TARGET = no
	}
}
scope:puppet_or_actor = {
	if = {
		limit = {
			character_is_valid_for_harrying_of_the_north_trigger = yes
			scope:recipient = {
				character_is_valid_for_harrying_of_the_north_trigger = yes
				is_important_or_vip_struggle_character = yes
			}
			culture != scope:recipient.culture
		}
		global_var:harrying_of_the_north = {
			save_scope_as = story
		}
		if = {
			limit = {
				character_is_valid_norman_for_harrying_of_the_north_trigger = yes
				scope:recipient = {
					character_is_valid_anglo_saxon_for_harrying_of_the_north_trigger = yes
				}
			}
			ep3_increase_pacification_effect = {
				AMOUNT = harrying_minor_increase_value
			}
		}
		else_if = {
			limit = {
				character_is_valid_anglo_saxon_for_harrying_of_the_north_t
# … (cut here; the rest is in the file)

As written in game/common/character_interactions/00_prison_interactions.txt.