List Add Item

Runs on: Shared — pure logic, runs on the Streamerly backend or inside a chatbox overlay.

The List Add Item node takes an existing list and a new value, appends the value to the end, and outputs the resulting list. The original list is never modified — a fresh copy with the item added is produced each time.

The item input type is dynamically inferred from whatever list is connected. If you wire in a list of strings, the item input will only accept strings. The output list type always matches the input list type.

Inputs

Name	Type	Description
list	list	The list to add to.
item	any	The value to append. The accepted type is inferred from the list's inner type.

Outputs

Name	Type	Description
result	list	A new list containing all original items with the new item appended at the end.

Example

You are running a giveaway and storing entries as a list of usernames. Each time a viewer types !enter in chat, a Chat Command trigger fires. Connect its username output through List Add Item — wiring the running entries list into list and the username into item — then store the result back as your updated entries list. Every new entry gets added without overwriting the ones before it.