Blackmail

is_shown = exists = scope:puppet_or_actor
scope:recipient = {
	this != scope:puppet_or_actor
	age > 10
}
scope:recipient = {
	any_secret = {
		is_known_by = scope:puppet_or_actor
	}
}

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

NOT = {
	scope:puppet_or_actor = {
		is_at_war_with = scope:recipient
	}
}
custom_description = {
	text = already_strong_hook
	subject = scope:puppet_or_actor
	object = scope:recipient
	NOT = {
		scope:puppet_or_actor = {
			has_strong_hook = scope:recipient
		}
	}
}
custom_description = {
	scope:recipient = {
		any_secret = {
			is_blackmailable_secret_trigger = {
				BLACKMAILER = scope:puppet_or_actor
				PARTICIPANT = scope:recipient
			}
		}
	}
	text = no_blackmailable_secret
}
custom_description = {
	text = has_sent_interaction_already
	subject = scope:recipient
	scope:puppet_or_actor = {
		NOT = {
			exists = var:currently_blackmailing
		}
	}
}

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

on_send = hidden_effect = {
	scope:puppet_or_actor = {
		set_variable = {
			name = currently_blackmailing
			value = scope:recipient
			days = 30
		}
	}
	scope:target = {
		if = {
			limit = {
				exists = secret_target
			}
			secret_target = {
				save_scope_as = secret_target
			}
		}
		if = {
			limit = {
				secret_type = secret_disputed_heritage
			}
			secret_target.father = {
				save_scope_as = father
			}
			secret_target.real_father = {
				save_scope_as = real_father
			}
		}
		if = {
			limit = {
				scope:target = {
					secret_type = secret_disputed_heritage
				}
			}
			secret_target.father = {
				save_scope_as = father
			}
			secret_target.real_father = {
				save_scope_as = real_father
			}
		}
	}
}
on_accept = scope:puppet_or_actor = {
	remove_variable = currently_blackmailing
	play_music_cue = mx_cue_murder
	if = {
		limit = {
			has_title = title:e_minister_censor
			top_participant_group:dynastic_cycle ?= {
				NOT = {
					participant_group_type = other_rulers
				}
			}
			scope:recipient = {
				top_participant_group:dynastic_cycle ?= {
					NOT = {
						participant_group_type = other_rulers
					}
				}
			}
		}
		add_merit_if_relevant_effect = {
			MERIT = minor_merit_value
		}
		if = {
			limit = {
				government_has_flag = government_has_influence
			}
			change_influence = {
				value = minor_influence_gain
				multiply = scope:recipient.highest_held_title_tier
			}
		}
		situation:dynastic_cycle = {
			if = {
				limit = {
					situation_top_has_catalyst = catalyst_minister_blackmailed
				}
				trigger_situation_catalyst = {
					catalyst = catalyst_minister_blackmailed
					character = scope:puppet_or_actor
				}
			}
		}
	}
}
blackmail_interaction_effect = yes
add_clan_unity_interaction_effect = {
	CHARACTER = scope:puppet_or_actor
	TARGET = scope:recipient
	VALUE = medium_unity_loss
	DESC = clan_unity_blackmail.desc
	REVERSE_NON_HOUSE_TARGET = no
}
on_decline = if = {
	limit = {
		scope:actor = {
			is_ai = no
		}
	}
	scope:recipient = {
		custom_tooltip = BLACKMAIL_INTERACTION_HUMAN_TT
	}
}
show_as_tooltip = {
	if = {
		limit = {
			exists = scope:secret
		}
		scope:secret = {
			expose_secret = scope:puppet_or_actor
		}
	}
	if = {
		limit = {
			exists = scope:target
		}
		scope:target = {
			expose_secret = scope:puppet_or_actor
		}
	}
}
scope:puppet_or_actor = {
	trigger_event = blackmail.0001
}
add_clan_unity_interaction_effect = {
	CHARACTER = scope:puppet_or_actor
	TARGET = scope:recipient
	VALUE = minor_unity_loss
	DESC = clan_unity_blackmail.desc
	REVERSE_NON_HOUSE_TARGET = no
}

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