Modify XP

Add, subtract, or set a user's XP or level

Fields

Field	Type	Required	Description
`target`	enum: xp \| level	yes	xp only supports add/subtract; level supports add/subtract/set.
`operation`	enum: add \| subtract \| set	yes	set is level-only.
`amount`	number (as string) or {path}	yes	Capped at 1,000,000,000 (xp) or 100,000 (level).
`preventNegative`	boolean	no	Only meaningful for target 'xp'; defaults to true.
`targetUserId`	string or {path}	no	Cross-user write target.

{
  "id": "01H8XGJVBWX7Y5Z3K9M2N4P6Q1",
  "type": "modify_xp",
  "target": "xp",
  "operation": "add",
  "amount": "100"
}