Attribute Modifier Operation (Data Type)

A String used to specify the operation in an Attribute Modifier.

The listed values are ordered by application priority — add_base_early (and its addition alias) runs first, set_total runs last.

Quick map: vanilla ↔ Apoli#

The three “short” operation names from vanilla Minecraft and the long-named Apoli equivalents are interchangeable. Use whichever reads better in your pack.

Short (vanilla / Apace alias)	Canonical (Apoli rewrite)
addition	add_base_early
multiply_base	multiply_base_additive
multiply_total	multiply_total_multiplicative

Values#

Value	Description
add_base_early (alias: addition)	NewBase = Base + Modifier (early in the base phase).
multiply_base_additive (alias: multiply_base)	NewBase = Base + (Base * Modifier).
multiply_base_multiplicative	NewBase = Base * (1 + Modifier).
standard_multiply_base	NewBase = Base * Modifier.
standard_divide_base	NewBase = Base / Modifier.
add_base_late	NewBase = Base + Modifier (late in the base phase).
min_base	NewBase = max(Base, Modifier) (raise the floor).
max_base	NewBase = min(Base, Modifier) (cap the ceiling).
set_base	NewBase = Modifier.
multiply_total_additive	NewTotal = Total * (Total * Modifier).
multiply_total_multiplicative (alias: multiply_total)	NewTotal = Total * (1 + Modifier).
standard_multiply_total	NewTotal = Total * Modifier.
standard_divide_total	NewTotal = Total / Modifier.
min_total	NewTotal = max(Total, Modifier).
max_total	NewTotal = min(Total, Modifier).
set_total	NewTotal = Modifier (last, overrides everything).

Phases and ordering#

Modifiers run in two phases: base first, then total. Within a phase, ordering follows the table above (top is earliest). When two modifiers share a phase and order, evaluation order is undefined — don’t rely on it.

For resource operations (apoli:modify_resource, apoli:change_resource alias), the resource value plays the role of both Base and Total — i.e. the operations effectively reduce to a single-number transform.