Contains default, maximum, and custom increments for a single modifier. The properties below will be contained in a sub-object identified by the external_id of the modifier in question.
The number of units of this modifier already entered into the interface when the diner first selects these associated menu item. Applies only to default_modifiers.
maximum_units
integer
The maximum number of units that the diner can add of this modifier. Do not use zero as a maximum integer or the modifiers will not be selectable. *DO NOT use -1 as an integer for unlimited quantity.
unit_increment
integer
The number of units added per incremental or decremental action.
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://raw.githubusercontent.com/api-evangelist/grubhub/main/json-schema/grubhub-modifierquantitysettings-schema.json",
"title": "ModifierQuantitySettings",
"x-generated": "2026-09-17",
"x-method": "derived",
"x-source": "openapi/grubhub-menu-openapi.yml#/components/schemas/ModifierQuantitySettings",
"type": "object",
"properties": {
"default_units": {
"type": "integer",
"description": "The number of units of this modifier already entered into the interface when the diner first selects these associated menu item. Applies only to default_modifiers.",
"format": "int32"
},
"maximum_units": {
"type": "integer",
"description": "The maximum number of units that the diner can add of this modifier. Do not use zero as a maximum integer or the modifiers will not be selectable. *DO NOT use -1 as an integer for unlimited quantity. Instead use a high number, ie 99.*",
"format": "int32"
},
"unit_increment": {
"type": "integer",
"description": "The number of units added per incremental or decremental action.",
"format": "int32"
}
},
"description": "Contains default, maximum, and custom increments for a single modifier. The properties below will be contained in a sub-object identified by the external_id of the modifier in question."
}
Discovery needs no key. Ratings and market analysis are Pro.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we
store it to create your key and to recognise you if you sign in with another
provider. See our Privacy Policy and
Terms.