diff --git a/src/constants/timeConstants.ts b/src/constants/timeConstants.ts
index 4a5a374f..32a03742 100644
--- a/src/constants/timeConstants.ts
+++ b/src/constants/timeConstants.ts
@@ -3,11 +3,13 @@ const secondsPerMinute = 60;
 const minutesPerHour = 60;
 const hoursPerDay = 24;
 
+const unixSecond = millisecondsPerSecond;
 const unixMinute = secondsPerMinute * millisecondsPerSecond;
 const unixHour = unixMinute * minutesPerHour;
 const unixDay = hoursPerDay * unixHour;
 
 export const unixTimesInMs = {
+    second: unixSecond,
     minute: unixMinute,
     hour: unixHour,
     day: unixDay
diff --git a/src/controllers/api/claimCompletedRecipeController.ts b/src/controllers/api/claimCompletedRecipeController.ts
index 4aef62da..02120194 100644
--- a/src/controllers/api/claimCompletedRecipeController.ts
+++ b/src/controllers/api/claimCompletedRecipeController.ts
@@ -3,8 +3,62 @@
 
 import { Request, RequestHandler, Response } from "express";
 import { logger } from "@/src/utils/logger";
+import { getItemByBlueprint, getItemCategoryByUniqueName } from "@/src/services/itemDataService";
+import { IOid } from "@/src/types/commonTypes";
+import { getJSONfromString } from "@/src/helpers/stringHelpers";
+import { getInventory } from "@/src/services/inventoryService";
+import { IInventoryDatabase } from "@/src/types/inventoryTypes/inventoryTypes";
 
-export const claimCompletedRecipeController: RequestHandler = async (_req: Request, res: Response) => {
-    logger.debug("Claiming Completed Recipe");
-    res.json({ status: "success" });
+export interface IClaimCompletedRecipeRequest {
+    RecipeIds: IOid[];
+}
+
+// eslint-disable-next-line @typescript-eslint/no-misused-promises
+export const claimCompletedRecipeController: RequestHandler = async (req, res) => {
+    const claimCompletedRecipeRequest = getJSONfromString(req.body.toString()) as IClaimCompletedRecipeRequest;
+    const accountId = req.query.accountId as string;
+    if (!accountId) throw new Error("no account id");
+
+    console.log(claimCompletedRecipeRequest);
+    const inventory = await getInventory(accountId);
+    const pendingRecipe = inventory.PendingRecipes.find(
+        recipe => recipe._id?.toString() === claimCompletedRecipeRequest.RecipeIds[0].$oid
+    );
+    console.log(pendingRecipe);
+    if (!pendingRecipe) {
+        logger.error(`no pending recipe found with id ${claimCompletedRecipeRequest.RecipeIds[0].$oid}`);
+        throw new Error(`no pending recipe found with id ${claimCompletedRecipeRequest.RecipeIds[0].$oid}`);
+    }
+
+    //check recipe is indeed ready to be completed
+    // if (pendingRecipe.CompletionDate > new Date()) {
+    //     logger.error(`recipe ${pendingRecipe._id} is not ready to be completed`);
+    //     throw new Error(`recipe ${pendingRecipe._id} is not ready to be completed`);
+    // }
+
+    //get completed Items
+    const completedItemName = getItemByBlueprint(pendingRecipe.ItemType)?.uniqueName;
+
+    if (!completedItemName) {
+        logger.error(`no completed item found for recipe ${pendingRecipe._id}`);
+        throw new Error(`no completed item found for recipe ${pendingRecipe._id}`);
+    }
+    const itemCategory = getItemCategoryByUniqueName(completedItemName) as keyof typeof inventory;
+    console.log(itemCategory);
+    //TODO: remove all Schema.Mixed for inventory[itemCategory] not to be any
+    //add item
+    //inventory[itemCategory].
+
+    //add additional item components like mods or weapons for a sentinel.
+    //const additionalItemComponents = itemComponents[uniqueName]
+    //add these items to inventory
+    //return changes as InventoryChanges
+
+    //remove pending recipe
+    inventory.PendingRecipes.pull(pendingRecipe._id);
+    // await inventory.save();
+
+    logger.debug("Claiming Completed Recipe", { completedItemName });
+
+    res.json({ InventoryChanges: {} });
 };
diff --git a/src/helpers/customHelpers/addItemHelpers.ts b/src/helpers/customHelpers/addItemHelpers.ts
index 7ee47820..d26d571f 100644
--- a/src/helpers/customHelpers/addItemHelpers.ts
+++ b/src/helpers/customHelpers/addItemHelpers.ts
@@ -23,20 +23,20 @@ interface IAddItemRequest {
     InternalName: string;
     accountId: string;
 }
-export const isInternalName = (internalName: string): boolean => {
+export const isInternalItemName = (internalName: string): boolean => {
     const item = items.find(i => i.uniqueName === internalName);
     return Boolean(item);
 };
 
-const parseInternalName = (internalName: unknown): string => {
-    if (!isString(internalName) || !isInternalName(internalName)) {
+const parseInternalItemName = (internalName: unknown): string => {
+    if (!isString(internalName) || !isInternalItemName(internalName)) {
         throw new Error("incorrect internal name");
     }
 
     return internalName;
 };
 
-const toAddItemRequest = (body: unknown): IAddItemRequest => {
+export const toAddItemRequest = (body: unknown): IAddItemRequest => {
     if (!body || typeof body !== "object") {
         throw new Error("incorrect or missing add item request data");
     }
@@ -44,12 +44,10 @@ const toAddItemRequest = (body: unknown): IAddItemRequest => {
     if ("type" in body && "internalName" in body && "accountId" in body) {
         return {
             type: parseItemType(body.type),
-            InternalName: parseInternalName(body.internalName),
+            InternalName: parseInternalItemName(body.internalName),
             accountId: parseString(body.accountId)
         };
     }
 
     throw new Error("malformed add item request");
 };
-
-export { toAddItemRequest };
diff --git a/src/services/itemDataService.ts b/src/services/itemDataService.ts
index 9052ff63..f0c3eddc 100644
--- a/src/services/itemDataService.ts
+++ b/src/services/itemDataService.ts
@@ -1,6 +1,5 @@
 import { logger } from "@/src/utils/logger";
 import Items, { Buildable, Category, Item, Warframe, Weapon } from "warframe-items";
-import { log } from "winston";
 
 type MinWeapon = Omit<Weapon, "patchlogs">;
 type MinItem = Omit<Item, "patchlogs">;
@@ -80,14 +79,46 @@ export const blueprintNames = Object.fromEntries(
         .map(name => [name, craftNames[name]])
 );
 
-const items2 = new Items({
-    category: ["Warframes", "Gear", "Melee", "Primary", "Secondary", "Sentinels", "Misc", "Arch-Gun", "Arch-Melee"]
-});
+const buildables = items.filter(item => !!(item as Buildable).components);
 
-items2.flatMap(item => item.components || []);
-// for (const item of items2) {
-//     console.log(item.category === "Warframes");
-//     if (item.category === "Warframes") {
-//         console.log(item);
-//     }
-// }
+export const getItemByBlueprint = (uniqueName: string): (MinItem & Buildable) | undefined => {
+    const item = buildables.find(
+        item => (item as Buildable).components?.find(component => component.uniqueName === uniqueName)
+    );
+    return item;
+};
+
+export const getItemCategoryByUniqueName = (uniqueName: string) => {
+    //Lotus/Types/Items/MiscItems/PolymerBundle
+
+    let splitWord = "Items/";
+    if (!uniqueName.includes("/Items/")) {
+        splitWord = "/Types/";
+    }
+
+    const index = getIndexAfter(uniqueName, splitWord);
+    if (index === -1) {
+        logger.error(`error parsing item category ${uniqueName}`);
+        throw new Error(`error parsing item category ${uniqueName}`);
+    }
+    const category = uniqueName.substring(index).split("/")[0];
+    return category;
+};
+
+export const getIndexAfter = (str: string, searchWord: string) => {
+    const index = str.indexOf(searchWord);
+    if (index === -1) {
+        return -1;
+    }
+    return index + searchWord.length;
+};
+
+export const getItemByUniqueName = (uniqueName: string) => {
+    const item = items.find(item => item.uniqueName === uniqueName);
+    return item;
+};
+
+export const getItemByName = (name: string) => {
+    const item = items.find(item => item.name === name);
+    return item;
+};
diff --git a/src/services/recipeService.ts b/src/services/recipeService.ts
index 7306cdc0..8bfdcc93 100644
--- a/src/services/recipeService.ts
+++ b/src/services/recipeService.ts
@@ -1,14 +1,68 @@
+import { unixTimesInMs } from "@/src/constants/timeConstants";
 import { getInventory } from "@/src/services/inventoryService";
+import { getItemByBlueprint, getItemCategoryByUniqueName } from "@/src/services/itemDataService";
+import { logger } from "@/src/utils/logger";
 import { Types } from "mongoose";
 
-export const startRecipe = async (recipeName: string, accountId: string) => {
-    //get recipe data
+export interface IResource {
+    uniqueName: string;
+    count: number;
+}
+
+// export const updateResources = async (accountId: string, components: IResource[]) => {
+//     const inventory = await getInventory(accountId);
+
+//     for (const component of components) {
+//         const category = getItemCategoryByUniqueName(component.uniqueName) as keyof typeof inventory;
+//         //validate category
+
+//         console.log(component.uniqueName);
+//         console.log("cate", category);
+
+//         const invItem = inventory[category];
+//         console.log("invItem", invItem);
+
+//         inventory["MiscItems"];
+//     }
+// };
+
+export const startRecipe = async (recipeName: string, accountId: string) => {
+    const recipe = getItemByBlueprint(recipeName);
+
+    if (!recipe) {
+        logger.error(`unknown recipe ${recipeName}`);
+        throw new Error(`unknown recipe ${recipeName}`);
+    }
+
+    const componentsNeeded = recipe.components?.map(component => ({
+        uniqueName: component.uniqueName,
+        count: component.itemCount
+    }));
+
+    if (!componentsNeeded) {
+        logger.error(`recipe ${recipeName} has no components`);
+        throw new Error(`recipe ${recipeName} has no components`);
+    }
+
+    //TODO: consume components used
+    //await updateResources(accountId, componentsNeeded);
+
+    //might be redundant
+    if (recipe.consumeOnBuild) {
+        //consume
+    }
+
+    if (!recipe.buildTime) {
+        logger.error(`recipe ${recipeName} has no build time`);
+        throw new Error(`recipe ${recipeName} has no build time`);
+    }
+    //buildtime is in seconds
+    const completionDate = new Date(Date.now() + recipe.buildTime * unixTimesInMs.second);
 
-    //consume resources
     const inventory = await getInventory(accountId);
     inventory.PendingRecipes.push({
         ItemType: recipeName,
-        CompletionDate: new Date(),
+        CompletionDate: completionDate,
         _id: new Types.ObjectId()
     });