These are all the actions currently programmed and usable.

Action type	Provider	Description	Options
chat_message	JayLib	Sends the player a message, can use all formatting codes and options	message a String chat message that supports all formatting options.
play_sound	JayLib	Plays a sound at the players position	sound a String ResourceLocation of the sound to play, volume Float, default 1.0. pitch Float, default 1.0
server_command	JayLib	Executes a command as the server, can use the variables %username% and %uuid% as placeholders for the player's info	command a String command (without the slash) to execute.
tick_delay	JayLib	A delay function that allows delaying the next actions in the sequence, to preform a sort of animation	delay a Integer delay in ticks.
nbt_merge	LimitlessPixelmon	Allows for adding nbt data into the players persistent nbt	tag a JSON Object
grant_mega_ring	LimitlessPixelmon	Grants the player a mega ring	None
grant_dynamax_band	LimitlessPixelmon	Grants the player a dynamax band	None