{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://opensea.io/schemas/FullfillListingRequest",
  "title": "FullfillListingRequest",
  "type": "object",
  "properties": {
    "listing": {
      "$ref": "#/components/schemas/ListingObject"
    },
    "fulfiller": {
      "$ref": "#/components/schemas/FulfillerObject"
    },
    "consideration": {
      "$ref": "#/components/schemas/ConsiderationObject"
    },
    "recipient": {
      "type": "string"
    },
    "units_to_fill": {
      "type": "integer",
      "format": "int64",
      "description": "Optional quantity of units to fulfill; defaults to remaining units for listings"
    },
    "include_optional_creator_fees": {
      "type": "boolean",
      "default": false,
      "description": "Whether to include optional creator fees in the fulfillment. If creator fees are already required, this is a no-op. Defaults to false."
    }
  },
  "required": [
    "fulfiller",
    "listing"
  ]
}