diff --git a/src/NetscriptFunctions.ts b/src/NetscriptFunctions.ts
index 65a4b3d2f..7b292a209 100644
--- a/src/NetscriptFunctions.ts
+++ b/src/NetscriptFunctions.ts
@@ -70,6 +70,7 @@ import { NetscriptCodingContract } from "./NetscriptFunctions/CodingContract";
 import { NetscriptCorporation } from "./NetscriptFunctions/Corporation";
 import { NetscriptFormulas } from "./NetscriptFunctions/Formulas";
 import { NetscriptStockMarket } from "./NetscriptFunctions/StockMarket";
+import { NetscriptGrafting } from "./NetscriptFunctions/Grafting";
 import { IPort } from "./NetscriptPort";
 
 import {
@@ -480,6 +481,7 @@ export function NetscriptFunctions(workerScript: WorkerScript): NS {
   const singularity = NetscriptSingularity(Player, workerScript, helper);
   const stockmarket = NetscriptStockMarket(Player, workerScript, helper);
   const ui = NetscriptUserInterface(Player, workerScript, helper);
+  const grafting = NetscriptGrafting(Player, workerScript, helper);
 
   const base: INS = {
     ...singularity,
@@ -493,6 +495,7 @@ export function NetscriptFunctions(workerScript: WorkerScript): NS {
     ui: ui,
     formulas: formulas,
     stock: stockmarket,
+    grafting: grafting,
     args: workerScript.args,
     hacknet: hacknet,
     sprintf: sprintf,
@@ -2315,6 +2318,7 @@ export function NetscriptFunctions(workerScript: WorkerScript): NS {
         tor: Player.hasTorRouter(),
         inBladeburner: Player.inBladeburner(),
         hasCorporation: Player.hasCorporation(),
+        entropyStacks: Player.entropyStacks,
       };
       Object.assign(data.jobs, Player.jobs);
       return data;
diff --git a/src/NetscriptFunctions/Grafting.ts b/src/NetscriptFunctions/Grafting.ts
new file mode 100644
index 000000000..124ab0206
--- /dev/null
+++ b/src/NetscriptFunctions/Grafting.ts
@@ -0,0 +1,84 @@
+import { CityName } from "../Locations/data/CityNames";
+import { Augmentations } from "../Augmentation/Augmentations";
+import { getRamCost } from "../Netscript/RamCostGenerator";
+import { WorkerScript } from "../Netscript/WorkerScript";
+import { CraftableAugmentation } from "../PersonObjects/Grafting/CraftableAugmentation";
+import { getAvailableAugs } from "../PersonObjects/Grafting/ui/GraftingRoot";
+import { IPlayer } from "../PersonObjects/IPlayer";
+import { Grafting as IGrafting } from "../ScriptEditor/NetscriptDefinitions";
+import { SourceFileFlags } from "../SourceFile/SourceFileFlags";
+import { Router } from "../ui/GameRoot";
+import { INetscriptHelper } from "./INetscriptHelper";
+
+export function NetscriptGrafting(player: IPlayer, workerScript: WorkerScript, helper: INetscriptHelper): IGrafting {
+  const checkGraftingAPIAccess = (func: any): void => {
+    if (player.bitNodeN !== 10 && !SourceFileFlags[10]) {
+      throw helper.makeRuntimeErrorMsg(
+        `grafting.${func}`,
+        "You do not currently have access to the Grafting API. This is either because you are not in BitNode 10 or because you do not have Source-File 10",
+      );
+    }
+  };
+
+  return {
+    getAugmentationCraftPrice: (augName: string): number => {
+      helper.updateDynamicRam("getAugmentationCraftPrice", getRamCost(player, "grafting", "getAugmentationCraftPrice"));
+      checkGraftingAPIAccess("getAugmentationCraftPrice");
+      if (!Augmentations.hasOwnProperty(augName)) {
+        throw helper.makeRuntimeErrorMsg("grafting.getAugmentationCraftPrice", `Invalid aug: ${augName}`);
+      }
+      const craftableAug = new CraftableAugmentation(Augmentations[augName]);
+      return craftableAug.cost;
+    },
+
+    getAugmentationCraftTime: (augName: string): number => {
+      helper.updateDynamicRam("getAugmentationCraftTime", getRamCost(player, "grafting", "getAugmentationCraftTime"));
+      checkGraftingAPIAccess("getAugmentationCraftTime");
+      if (!Augmentations.hasOwnProperty(augName)) {
+        throw helper.makeRuntimeErrorMsg("grafting.getAugmentationCraftTime", `Invalid aug: ${augName}`);
+      }
+      const craftableAug = new CraftableAugmentation(Augmentations[augName]);
+      return craftableAug.time;
+    },
+
+    craftAugmentation: (augName: string, focus = true): boolean => {
+      helper.updateDynamicRam("craftAugmentation", getRamCost(player, "grafting", "craftAugmentation"));
+      checkGraftingAPIAccess("craftAugmentation");
+      if (player.city !== CityName.NewTokyo) {
+        throw helper.makeRuntimeErrorMsg(
+          "grafting.craftAugmentation",
+          "You must be in New Tokyo to begin crafting an Augmentation.",
+        );
+      }
+      if (!getAvailableAugs(player).includes(augName)) {
+        workerScript.log("grafting.craftAugmentation", () => `Invalid aug: ${augName}`);
+        return false;
+      }
+
+      const wasFocusing = player.focus;
+      if (player.isWorking) {
+        const txt = player.singularityStopWork();
+        workerScript.log("craftAugmentation", () => txt);
+      }
+
+      const craftableAug = new CraftableAugmentation(Augmentations[augName]);
+      if (player.money < craftableAug.cost) {
+        workerScript.log("grafting.craftAugmentation", () => `You don't have enough money to craft ${augName}`);
+      }
+
+      player.loseMoney(craftableAug.cost, "augmentations");
+      player.startCraftAugmentationWork(augName, craftableAug.time);
+
+      if (focus) {
+        player.startFocusing();
+        Router.toWork();
+      } else if (wasFocusing) {
+        player.stopFocusing();
+        Router.toTerminal();
+      }
+
+      workerScript.log("grafting.craftAugmentation", () => `Began crafting Augmentation ${augName}.`);
+      return true;
+    },
+  };
+}
diff --git a/src/PersonObjects/Grafting/ui/GraftingRoot.tsx b/src/PersonObjects/Grafting/ui/GraftingRoot.tsx
index eefde9c2f..838fc8f7e 100644
--- a/src/PersonObjects/Grafting/ui/GraftingRoot.tsx
+++ b/src/PersonObjects/Grafting/ui/GraftingRoot.tsx
@@ -21,7 +21,7 @@ import { CraftableAugmentation } from "../CraftableAugmentation";
 
 const CraftableAugmentations: IMap<CraftableAugmentation> = {};
 
-const getAvailableAugs = (player: IPlayer): string[] => {
+export const getAvailableAugs = (player: IPlayer): string[] => {
   const augs: string[] = [];
 
   for (const [augName, aug] of Object.entries(Augmentations)) {
diff --git a/src/ScriptEditor/NetscriptDefinitions.d.ts b/src/ScriptEditor/NetscriptDefinitions.d.ts
index a062ddd29..f871c296e 100644
--- a/src/ScriptEditor/NetscriptDefinitions.d.ts
+++ b/src/ScriptEditor/NetscriptDefinitions.d.ts
@@ -95,6 +95,7 @@ interface Player {
   tor: boolean;
   hasCorporation: boolean;
   inBladeburner: boolean;
+  entropyStacks: number;
 }
 
 /**
@@ -3719,6 +3720,39 @@ export interface Sleeve {
   purchaseSleeveAug(sleeveNumber: number, augName: string): boolean;
 }
 
+export interface Grafting {
+  /**
+   * Retrieve the crafting cost of an aug.
+   * @remarks
+   * RAM cost: TODO
+   *
+   * @param augName - Name of the aug to check the price of. Must be an exact match.
+   * @returns The cost required to craft the named augmentation.
+   */
+  getAugmentationCraftPrice(augName: string): number;
+
+  /**
+   * Retrieves the time required to craft an aug.
+   * @remarks
+   * RAM cost: TODO
+   *
+   * @param augName - Name of the aug to check the crafting time of. Must be an exact match.
+   * @returns The time required, in millis, to craft the named augmentation.
+   */
+  getAugmentationCraftTime(augName: string): number;
+
+  /**
+   * Begins crafting the named aug. You must be in New Tokyo to use this.
+   * @remarks
+   * RAM cost: TODO
+   *
+   * @param augName - The name of the aug to begin crafting. Must be an exact match.
+   * @param focus - Acquire player focus on this Augmentation crafting. Optional. Defaults to true.
+   * @returns True if the aug successfully began crafting, false otherwise.
+   */
+  craftAugmentation(augName: string, focus?: boolean): boolean;
+}
+
 /**
  * Skills formulas
  * @public
@@ -4280,6 +4314,13 @@ export interface NS extends Singularity {
    */
   readonly ui: UserInterface;
 
+  /**
+   * Namespace for grafting functions.
+   * @remarks
+   * RAM cost: 0 GB
+   */
+  readonly grafting: Grafting;
+
   /**
    * Arguments passed into the script.
    *