What are the requirements for Fire Puppet in CK3?

You: Is not incapable. (patch 1.20.1.2)

Will the AI accept Fire Puppet?

Yes: it is accepted automatically.

Interaction · Diplomatic actions

Fire Puppet

No costAccepted automatically

End your Puppet relationship with the recipient

What you need

You

To send it

Is not incapable

To see it in the menu

Is played by a person
Is an Adult
scope:recipient.puppeteer ?= scope:actor

Fire Puppet is a diplomatic character interaction in Crusader Kings III. You need: Is not incapable. Accepted automatically. Patch 1.20.1.2, from game/common/character_interactions/00_puppet_interactions.txt.

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Quick answers (2)

What are the requirements for Fire Puppet in CK3?: You: Is not incapable. (patch 1.20.1.2)
Will the AI accept Fire Puppet?: Yes: it is accepted automatically.

Will they accept?

The other character has no choice: the game accepts it automatically.

What happens

Effects

… stops being your Puppet
The character you target: Opinion: Set Me Aside (-10)

• the game's own tooltip text · ◦ our reading of the script line · code the script where neither exists

Who can use it and sees it (is_available, is_shown) (4 lines of game script)

is_available = is_ai = no
is_adult = yes
is_shown = scope:actor != scope:recipient
scope:recipient.puppeteer ?= scope:actor

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

Can be sent when (is_valid…) (3 lines of game script)

scope:actor = {
	is_incapable = no
}

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

Effects (on_send, on_accept, on_decline) (22 lines of game script)

on_accept = scope:actor = {
	send_interface_toast = {
		type = event_toast_effect_neutral
		title = fire_puppet_interaction_notification
		left_icon = scope:actor
		right_icon = scope:recipient
		custom_tooltip = fire_puppet_interaction_effect_tt
		hidden_effect = {
			scope:recipient = {
				clear_puppet_status = yes
				remove_puppet_modifiers_effect = yes
			}
		}
		scope:recipient = {
			add_opinion = {
				target = scope:actor
				modifier = set_me_aside_opinion
				opinion = -10
			}
		}
	}
}

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

Category: Diplomatic actions
In the menu: under More…
ID: fire_puppet_interaction

Source: game/common/character_interactions/00_puppet_interactions.txt and the English localisation, Crusader Kings III 1.20.1.2. “You” is the character who sends it (scope:actor, or a puppet acting for you); “the character you target” is the recipient.