checkcallstack

Checks the call stack for executor or game frames.

Syntax

checkcallstack(filter?: string, level?: number) -> boolean

Parameter	Type	Description
`filter?`	`string`	Combination of e (executor), g (game) and b (both).
`level?`	`number`	Optional exact stack level to inspect instead of the whole stack.

Type	Description
`boolean`	Whether a matching frame exists at or above the requested level.

checkcallstack inspects Luau call frames and classifies each closure as executor-owned or game-owned.

With a level argument only that frame is checked. Without one, the whole visible stack is scanned for a frame matching the filter.

print(checkcallstack("b"))
print(checkcallstack("e", 1))

Raw hooks bypass closure-level safety; always keep the returned handle so you can unhook.
The default filter is b (both kinds).