diff --git a/src/controllers/api/projectionManagerController.ts b/src/controllers/api/projectionManagerController.ts
new file mode 100644
index 000000000..0872cde0f
--- /dev/null
+++ b/src/controllers/api/projectionManagerController.ts
@@ -0,0 +1,64 @@
+import { RequestHandler } from "express";
+import { getAccountIdForRequest } from "@/src/services/loginService";
+import { addMiscItems, getInventory } from "@/src/services/inventoryService";
+import { ExportRelics, IRelic } from "warframe-public-export-plus";
+
+// eslint-disable-next-line @typescript-eslint/no-misused-promises
+export const projectionManagerController: RequestHandler = async (req, res) => {
+    const accountId = await getAccountIdForRequest(req);
+    const inventory = await getInventory(accountId);
+    const request = JSON.parse(String(req.body)) as IProjectionUpgradeRequest;
+    const [era, category, currentQuality] = parseProjection(request.projectionType);
+    const upgradeCost = (request.qualityTag - qualityKeywordToNumber[currentQuality]) * 25;
+    const newProjectionType = findProjection(era, category, qualityNumberToKeyword[request.qualityTag]);
+    addMiscItems(inventory, [
+        {
+            ItemType: request.projectionType,
+            ItemCount: -1
+        },
+        {
+            ItemType: newProjectionType,
+            ItemCount: 1
+        },
+        {
+            ItemType: "/Lotus/Types/Items/MiscItems/VoidTearDrop",
+            ItemCount: -upgradeCost
+        }
+    ]);
+    await inventory.save();
+    res.json({
+        prevProjection: request.projectionType,
+        upgradedProjection: newProjectionType,
+        upgradeCost: upgradeCost
+    });
+};
+
+interface IProjectionUpgradeRequest {
+    projectionType: string;
+    qualityTag: number;
+}
+
+type VoidProjectionQuality = "VPQ_BRONZE" | "VPQ_SILVER" | "VPQ_GOLD" | "VPQ_PLATINUM";
+
+const qualityNumberToKeyword: VoidProjectionQuality[] = ["VPQ_BRONZE", "VPQ_SILVER", "VPQ_GOLD", "VPQ_PLATINUM"];
+const qualityKeywordToNumber: Record<VoidProjectionQuality, number> = {
+    VPQ_BRONZE: 0,
+    VPQ_SILVER: 1,
+    VPQ_GOLD: 2,
+    VPQ_PLATINUM: 3
+};
+
+// e.g. "/Lotus/Types/Game/Projections/T2VoidProjectionProteaPrimeDBronze" -> ["Lith", "W5", "VPQ_BRONZE"]
+const parseProjection = (typeName: string): [string, string, VoidProjectionQuality] => {
+    const relic: IRelic | undefined = ExportRelics[typeName];
+    if (!relic) {
+        throw new Error(`Unknown projection ${typeName}`);
+    }
+    return [relic.era, relic.category, relic.quality];
+};
+
+const findProjection = (era: string, category: string, quality: VoidProjectionQuality): string => {
+    return Object.entries(ExportRelics).find(
+        ([_, relic]) => relic.era == era && relic.category == category && relic.quality == quality
+    )![0];
+};
diff --git a/src/routes/api.ts b/src/routes/api.ts
index 5c1472244..ff6c72861 100644
--- a/src/routes/api.ts
+++ b/src/routes/api.ts
@@ -40,6 +40,7 @@ import { missionInventoryUpdateController } from "@/src/controllers/api/missionI
 import { modularWeaponCraftingController } from "@/src/controllers/api/modularWeaponCraftingController";
 import { modularWeaponSaleController } from "@/src/controllers/api/modularWeaponSaleController";
 import { nameWeaponController } from "@/src/controllers/api/nameWeaponController";
+import { projectionManagerController } from "../controllers/api/projectionManagerController";
 import { purchaseController } from "@/src/controllers/api/purchaseController";
 import { queueDojoComponentDestructionController } from "@/src/controllers/api/queueDojoComponentDestructionController";
 import { rerollRandomModController } from "@/src/controllers/api/rerollRandomModController";
@@ -118,6 +119,7 @@ apiRouter.post("/login.php", loginController);
 apiRouter.post("/missionInventoryUpdate.php", missionInventoryUpdateController);
 apiRouter.post("/modularWeaponCrafting.php", modularWeaponCraftingController);
 apiRouter.post("/nameWeapon.php", nameWeaponController);
+apiRouter.post("/projectionManager.php", projectionManagerController);
 apiRouter.post("/purchase.php", purchaseController);
 apiRouter.post("/rerollRandomMod.php", rerollRandomModController);
 apiRouter.post("/saveLoadout.php", saveLoadoutController);