diff --git a/src/controllers/custom/addItemsController.ts b/src/controllers/custom/addItemsController.ts
index 4add37ac..ff05fc7b 100644
--- a/src/controllers/custom/addItemsController.ts
+++ b/src/controllers/custom/addItemsController.ts
@@ -1,14 +1,91 @@
 import { getAccountIdForRequest } from "../../services/loginService.ts";
-import { getInventory, addItem } from "../../services/inventoryService.ts";
+import {
+    getInventory,
+    addItem,
+    addMiscItem,
+    addMods,
+    addShipDecorations,
+    addPowerSuit,
+    addEquipment,
+    addMechSuit,
+    addSentinel,
+    addSentinelWeapon,
+    addCustomization,
+    addSkin,
+    productCategoryToInventoryBin,
+    occupySlot
+} from "../../services/inventoryService.ts";
 import type { RequestHandler } from "express";
 import { broadcastInventoryUpdate } from "../../services/wsService.ts";
+import { InventorySlot } from "../../types/inventoryTypes/inventoryTypes.ts";
 
 export const addItemsController: RequestHandler = async (req, res) => {
     const accountId = await getAccountIdForRequest(req);
     const requests = req.body as IAddItemRequest[];
     const inventory = await getInventory(accountId);
+    const productCategory = (req.query.productCategory as string) || "";
     for (const request of requests) {
-        await addItem(inventory, request.ItemType, request.ItemCount, true, undefined, request.Fingerprint, true);
+        switch (productCategory) {
+            case "MiscItems":
+                addMiscItem(inventory, request.ItemType, request.ItemCount);
+                break;
+
+            case "RawUpgrades":
+                addMods(inventory, [request]);
+                break;
+
+            case "ShipDecorations":
+                addShipDecorations(inventory, [request]);
+                break;
+
+            case "Suits":
+                await addPowerSuit(inventory, request.ItemType);
+                occupySlot(inventory, InventorySlot.SUITS, true);
+                break;
+
+            case "MechSuits":
+                await addMechSuit(inventory, request.ItemType);
+                occupySlot(inventory, InventorySlot.MECHSUITS, true);
+                break;
+
+            case "Sentinels":
+                addSentinel(inventory, request.ItemType, true);
+                break;
+
+            case "SentinelWeapons":
+                addSentinelWeapon(inventory, request.ItemType, true);
+                break;
+
+            case "FlavourItems":
+                addCustomization(inventory, request.ItemType);
+                break;
+
+            case "WeaponSkins":
+                addSkin(inventory, request.ItemType);
+                break;
+
+            case "LongGuns":
+            case "Pistols":
+            case "Melee":
+            case "SpaceSuits":
+            case "SpaceGuns":
+            case "SpaceMelee":
+                addEquipment(inventory, productCategory, request.ItemType);
+                occupySlot(inventory, productCategoryToInventoryBin(productCategory) ?? InventorySlot.WEAPONS, true);
+                break;
+
+            default:
+                await addItem(
+                    inventory,
+                    request.ItemType,
+                    request.ItemCount,
+                    true,
+                    undefined,
+                    request.Fingerprint,
+                    true
+                );
+                break;
+        }
     }
     await inventory.save();
     res.end();
diff --git a/src/services/inventoryService.ts b/src/services/inventoryService.ts
index 17cdf370..e84d178c 100644
--- a/src/services/inventoryService.ts
+++ b/src/services/inventoryService.ts
@@ -941,7 +941,7 @@ export const applyDefaultUpgrades = (
 };
 
 //TODO: maybe genericMethod for all the add methods, they share a lot of logic
-const addSentinel = (
+export const addSentinel = (
     inventory: TInventoryDatabaseDocument,
     sentinelName: string,
     premiumPurchase: boolean,
@@ -972,11 +972,11 @@ const addSentinel = (
     return inventoryChanges;
 };
 
-const addSentinelWeapon = (
+export const addSentinelWeapon = (
     inventory: TInventoryDatabaseDocument,
     typeName: string,
     premiumPurchase: boolean,
-    inventoryChanges: IInventoryChanges
+    inventoryChanges: IInventoryChanges = {}
 ): void => {
     // Sentinel weapons also occupy a slot in the sentinels bin
     combineInventoryChanges(inventoryChanges, occupySlot(inventory, InventorySlot.SENTINELS, premiumPurchase));
diff --git a/static/webui/index.html b/static/webui/index.html
index b14e004b..e0d610bf 100644
--- a/static/webui/index.html
+++ b/static/webui/index.html
@@ -116,9 +116,31 @@
                             </div>
                             <div class="tab-pane" id="typeName-tab-content">
                                 <form class="card-body" onsubmit="addItemByItemType();return false;">
-                                    <p data-loc="inventory_addItemByItemType_warning"></p>
+                                    <p>
+                                        <span data-loc="inventory_addItemByItemType_warning"></span>
+                                        <span data-loc="inventory_addItemByItemType_productCategory"></span>
+                                    </p>
                                     <div class="input-group">
-                                        <input class="form-control" id="typeName-type" />
+                                        <input class="form-control" id="typeName-count" type="number" value="1" disabled />
+                                        <input class="form-control w-50" id="typeName-type" />
+                                        <select class="form-control" id="typeName-productCategory" data-default="">
+                                            <option value="" data-loc="notSpecified"></option>
+                                            <option value="MiscItems">MiscItems</option>
+                                            <option value="RawUpgrades">RawUpgrades</option>
+                                            <option value="ShipDecorations">ShipDecorations</option>
+                                            <option value="Suits">Suits</option>
+                                            <option value="LongGuns">LongGuns</option>
+                                            <option value="Pistols">Pistols</option>
+                                            <option value="Melee">Melee</option>
+                                            <option value="SpaceSuits">SpaceSuits</option>
+                                            <option value="SpaceGuns">SpaceGuns</option>
+                                            <option value="SpaceMelee">SpaceMelee</option>
+                                            <option value="MechSuits">MechSuits</option>
+                                            <option value="Sentinels">Sentinels</option>
+                                            <option value="SentinelWeapons">SentinelWeapons</option>
+                                            <option value="FlavourItems">FlavourItems</option>
+                                            <option value="WeaponSkins">WeaponSkins</option>
+                                        </select>
                                         <button class="btn btn-primary" type="submit" data-loc="general_addButton"></button>
                                     </div>
                                 </form>
diff --git a/static/webui/script.js b/static/webui/script.js
index a648b6ea..2a867de5 100644
--- a/static/webui/script.js
+++ b/static/webui/script.js
@@ -773,6 +773,9 @@ function updateInventory() {
             document.getElementById("typeName-tab").classList.remove("active");
             document.getElementById("typeName-tab-content").classList.remove("active", "show");
             document.getElementById("typeName-type").value = "";
+            document.getElementById("typeName-productCategory").value = "";
+            document.getElementById("typeName-count").value = 1;
+            document.getElementById("typeName-count").disabled = true;
 
             document.getElementById("miscItems-tab").classList.add("active");
             document.getElementById("miscItems-tab-content").classList.add("active", "show");
@@ -2965,27 +2968,48 @@ function removeCountItems(uniqueName, count) {
     });
 }
 
+document.getElementById("typeName-productCategory").onchange = function () {
+    const productCategory = document.getElementById("typeName-productCategory").value;
+    const ItemCount = document.getElementById("typeName-count");
+    if (["MiscItems", "RawUpgrades", "ShipDecorations"].includes(productCategory)) {
+        ItemCount.disabled = false;
+    } else {
+        ItemCount.disabled = true;
+        ItemCount.value = 1;
+    }
+};
+
 function addItemByItemType() {
     const ItemType = document.getElementById("typeName-type").value;
+    const productCategory = document.getElementById("typeName-productCategory");
+    const ItemCount = document.getElementById("typeName-count");
     // Must start with "/Lotus/", contain only letters A–Z, digits 0–9, no "//", and not end with "/"
     if (!ItemType || !/^\/Lotus\/(?:[A-Za-z0-9]+(?:\/[A-Za-z0-9]+)*)$/.test(ItemType)) {
         $("#typeName-type").addClass("is-invalid").focus();
         return;
     }
+    let url = "/custom/addItems?" + window.authz;
+
+    if (productCategory.value) {
+        url += "&productCategory=" + productCategory.value;
+    }
     revalidateAuthz().then(() => {
         $.post({
-            url: "/custom/addItems?" + window.authz,
+            url,
             contentType: "application/json",
             data: JSON.stringify([
                 {
                     ItemType,
-                    ItemCount: 1
+                    ItemCount: ItemCount.value
                 }
             ])
         })
-            .done(function (_, _, jqXHR) {
+            .done(function (_, __, jqXHR) {
                 if (jqXHR.status === 200) {
                     updateInventory();
+                    productCategory.value = "";
+                    ItemCount.disabled = true;
+                    ItemCount.value = 1;
                 }
             })
             .fail(function () {
diff --git a/static/webui/translations/de.js b/static/webui/translations/de.js
index 8f2f97a3..fe775f99 100644
--- a/static/webui/translations/de.js
+++ b/static/webui/translations/de.js
@@ -98,6 +98,7 @@ dict = {
     inventory_addItems: `Gegenstände hinzufügen`,
     inventory_addItemByItemType: `Roh`,
     inventory_addItemByItemType_warning: `Verwende diese Funktion auf eigene Gefahr. Sie kann dein Inventar beschädigen und du musst Gegenstände manuell entfernen, falls etwas schiefgeht.`,
+    inventory_addItemByItemType_productCategory: `[UNTRANSLATED] You can also specify <code>productCategory</code>, some of which will allow you to change the number of items added.`,
     inventory_suits: `Warframes`,
     inventory_longGuns: `Primärwaffen`,
     inventory_pistols: `Sekundärwaffen`,
@@ -308,6 +309,7 @@ dict = {
     worldState_incompatibleWith: `Inkompatibel mit:`,
     enabled: `Aktiviert`,
     disabled: `Deaktiviert`,
+    notSpecified: `[UNTRANSLATED] Not specified`,
     worldState_we1: `Wochenende 1`,
     worldState_we2: `Wochenende 2`,
     worldState_we3: `Wochenende 3`,
diff --git a/static/webui/translations/en.js b/static/webui/translations/en.js
index 7a0af074..0e04914c 100644
--- a/static/webui/translations/en.js
+++ b/static/webui/translations/en.js
@@ -97,6 +97,7 @@ dict = {
     inventory_addItems: `Add Items`,
     inventory_addItemByItemType: `Raw`,
     inventory_addItemByItemType_warning: `Use this feature at your own risk. It may break your inventory, and you will need to remove items manually if something goes wrong.`,
+    inventory_addItemByItemType_productCategory: `You can also specify <code>productCategory</code>, some of which will allow you to change the number of items added.`,
     inventory_suits: `Warframes`,
     inventory_longGuns: `Primary Weapons`,
     inventory_pistols: `Secondary Weapons`,
@@ -307,6 +308,7 @@ dict = {
     worldState_incompatibleWith: `Incompatible with:`,
     enabled: `Enabled`,
     disabled: `Disabled`,
+    notSpecified: `Not specified`,
     worldState_we1: `Weekend 1`,
     worldState_we2: `Weekend 2`,
     worldState_we3: `Weekend 3`,
diff --git a/static/webui/translations/es.js b/static/webui/translations/es.js
index 58eab8c8..011bf7a7 100644
--- a/static/webui/translations/es.js
+++ b/static/webui/translations/es.js
@@ -98,6 +98,7 @@ dict = {
     inventory_addItems: `Agregar objetos`,
     inventory_addItemByItemType: `Sin refinar`,
     inventory_addItemByItemType_warning: `Usa esta función bajo tu propio riesgo. Podría dañar tu inventario, y tendrías que eliminar los objetos manualmente si algo sale mal.`,
+    inventory_addItemByItemType_productCategory: `[UNTRANSLATED] You can also specify <code>productCategory</code>, some of which will allow you to change the number of items added.`,
     inventory_suits: `Warframes`,
     inventory_longGuns: `Armas primarias`,
     inventory_pistols: `Armas secundarias`,
@@ -308,6 +309,7 @@ dict = {
     worldState_incompatibleWith: `No compatible con:`,
     enabled: `Activado`,
     disabled: `Desactivado`,
+    notSpecified: `[UNTRANSLATED] Not specified`,
     worldState_we1: `Semana 1`,
     worldState_we2: `Semana 2`,
     worldState_we3: `Semana 3`,
diff --git a/static/webui/translations/fr.js b/static/webui/translations/fr.js
index 3fa19019..139c0e01 100644
--- a/static/webui/translations/fr.js
+++ b/static/webui/translations/fr.js
@@ -98,6 +98,7 @@ dict = {
     inventory_addItems: `Ajouter des items`,
     inventory_addItemByItemType: `Brut`,
     inventory_addItemByItemType_warning: `Cette fonctionnalité comporte des risques. Il faudra rajouter les items manuellement si l'inventaire est compris.`,
+    inventory_addItemByItemType_productCategory: `[UNTRANSLATED] You can also specify <code>productCategory</code>, some of which will allow you to change the number of items added.`,
     inventory_suits: `Warframes`,
     inventory_longGuns: `Armes principales`,
     inventory_pistols: `Armes secondaires`,
@@ -308,6 +309,7 @@ dict = {
     worldState_incompatibleWith: `Incompatible avec :`,
     enabled: `Activé`,
     disabled: `Désactivé`,
+    notSpecified: `[UNTRANSLATED] Not specified`,
     worldState_we1: `Weekend 1`,
     worldState_we2: `Weekend 2`,
     worldState_we3: `Weekend 3`,
diff --git a/static/webui/translations/ru.js b/static/webui/translations/ru.js
index bb80e3ed..9d22fb1b 100644
--- a/static/webui/translations/ru.js
+++ b/static/webui/translations/ru.js
@@ -98,6 +98,7 @@ dict = {
     inventory_addItems: `Добавить предметы`,
     inventory_addItemByItemType: `Необработанные данные`,
     inventory_addItemByItemType_warning: `Используйте эту функцию на свой страх и риск. Она может повредить ваш инвентарь, и в случае проблем вам придётся удалять предметы вручную.`,
+    inventory_addItemByItemType_productCategory: `Вы также можете указать <code>productCategory</code>, некоторые из них позволят вам изменить количество добавленных преметов.`,
     inventory_suits: `Варфреймы`,
     inventory_longGuns: `Основное оружие`,
     inventory_pistols: `Вторичное оружие`,
@@ -308,6 +309,7 @@ dict = {
     worldState_incompatibleWith: `Несовместимо с:`,
     enabled: `Включено`,
     disabled: `Отключено`,
+    notSpecified: `Не указано`,
     worldState_we1: `Выходные 1`,
     worldState_we2: `Выходные 2`,
     worldState_we3: `Выходные 3`,
diff --git a/static/webui/translations/uk.js b/static/webui/translations/uk.js
index e36a9939..9293746f 100644
--- a/static/webui/translations/uk.js
+++ b/static/webui/translations/uk.js
@@ -98,6 +98,7 @@ dict = {
     inventory_addItems: `Додати предмети`,
     inventory_addItemByItemType: `Необроблені дані`,
     inventory_addItemByItemType_warning: `Використовуйте цю функцію на власний ризик. Вона може пошкодити ваше спорядження, і вам доведеться видаляти предмети вручну, якщо щось піде не так.`,
+    inventory_addItemByItemType_productCategory: `[UNTRANSLATED] You can also specify <code>productCategory</code>, some of which will allow you to change the number of items added.`,
     inventory_suits: `Ворфрейми`,
     inventory_longGuns: `Основна зброя`,
     inventory_pistols: `Допоміжна зброя`,
@@ -308,6 +309,7 @@ dict = {
     worldState_incompatibleWith: `Несумісне з:`,
     enabled: `Увімкнено`,
     disabled: `Вимкнено`,
+    notSpecified: `[UNTRANSLATED] Not specified`,
     worldState_we1: `Вихідні 1`,
     worldState_we2: `Вихідні 2`,
     worldState_we3: `Вихідні 3`,
diff --git a/static/webui/translations/zh.js b/static/webui/translations/zh.js
index e856f8b9..b1d2d4a4 100644
--- a/static/webui/translations/zh.js
+++ b/static/webui/translations/zh.js
@@ -98,6 +98,7 @@ dict = {
     inventory_addItems: `添加物品`,
     inventory_addItemByItemType: `[UNTRANSLATED] Raw`,
     inventory_addItemByItemType_warning: `[UNTRANSLATED] Use this feature at your own risk. It may break your inventory, and you will need to remove items manually if something goes wrong.`,
+    inventory_addItemByItemType_productCategory: `[UNTRANSLATED] You can also specify <code>productCategory</code>, some of which will allow you to change the number of items added.`,
     inventory_suits: `战甲`,
     inventory_longGuns: `主要武器`,
     inventory_pistols: `次要武器`,
@@ -308,6 +309,7 @@ dict = {
     worldState_incompatibleWith: `不兼容的活动:`,
     enabled: `启用`,
     disabled: `关闭/取消配置`,
+    notSpecified: `[UNTRANSLATED] Not specified`,
     worldState_we1: `活动阶段:第一周`,
     worldState_we2: `活动阶段:第二周`,
     worldState_we3: `活动阶段:第三周`,