diff --git a/src/App.tsx b/src/App.tsx
index 177d7a3..c6e5fff 100755
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -48,7 +48,10 @@ export default function App() {
       <AnimatedBackground />
       <div className="relative z-10 min-h-screen backdrop-blur-sm bg-gray-900/20 text-white p-4">
         <div className="max-w-4xl mx-auto grid gap-8">
-          <PetDisplay pet={pet} />
+          <PetDisplay
+            pet={pet}
+            onPetUpdate={handlePetUpdate}  // Add this prop
+          />
           <InteractionMenu
             pet={pet}
             onPetUpdate={handlePetUpdate}
diff --git a/src/components/PetDisplay.tsx b/src/components/PetDisplay.tsx
index 34e3e65..f43988d 100755
--- a/src/components/PetDisplay.tsx
+++ b/src/components/PetDisplay.tsx
@@ -1,12 +1,16 @@
 import { Pet } from '../types/Pet';
 import { Brain, Dumbbell, Heart, Sparkles, Coins, Pizza, Trash2, Trophy } from 'lucide-react';
 import { PET_CLASSES } from '../data/petClasses';
+import { useState } from 'react';
+import InventoryModal from './modal/InventoryModal';
+import SkillTreeModal from './modal/SkillTreeModal';
 
 interface PetDisplayProps {
   pet: Pet;
+  onPetUpdate: (updatedPet: Pet) => void;  // Add this prop
 }
 
-export default function PetDisplay({ pet }: PetDisplayProps) {
+export default function PetDisplay({ pet, onPetUpdate }: PetDisplayProps) {
   const StatBar = ({ value, maxValue, label, icon: Icon }: { value: number; maxValue: number; label: string; icon: any }) => (
     <div className="flex items-center space-x-2">
       <Icon className="w-5 h-5" />
@@ -28,6 +32,9 @@ export default function PetDisplay({ pet }: PetDisplayProps) {
     </div>
   );
 
+  const [showInventoryModal, setShowInventoryModal] = useState(false);
+  const [showSkillTreeModal, setShowSkillTreeModal] = useState(false);
+
   return (
     <div className="bg-gray-900 p-6 rounded-xl shadow-xl">
       <div className="text-center mb-8">
@@ -67,12 +74,42 @@ export default function PetDisplay({ pet }: PetDisplayProps) {
         />
       </div>
 
-      <div className="grid grid-cols-2 gap-4">
-        <ResourceCounter value={pet.resources.wisdom} label="Wisdom" icon={Sparkles} />
-        <ResourceCounter value={pet.resources.gold} label="Gold" icon={Coins} />
-        <ResourceCounter value={pet.resources.food} label="Food" icon={Pizza} />
-        <ResourceCounter value={pet.resources.junk} label="Junk" icon={Trash2} />
+      <div className="flex items-start mb-4 space-x-4">
+        <div className="grid grid-cols-2 gap-4 flex-1">
+          <ResourceCounter value={pet.resources.wisdom} label="Wisdom" icon={Sparkles} />
+          <ResourceCounter value={pet.resources.gold} label="Gold" icon={Coins} />
+          <ResourceCounter value={pet.resources.food} label="Food" icon={Pizza} />
+          <ResourceCounter value={pet.resources.junk} label="Junk" icon={Trash2} />
+        </div>
+        <div className="flex flex-col space-y-4">
+          <button
+            onClick={() => setShowInventoryModal(true)}
+            className="bg-green-600 hover:bg-green-700 text-white px-4 py-2 rounded"
+          >
+            Inventory
+          </button>
+          <button
+            onClick={() => setShowSkillTreeModal(true)}
+            className="bg-purple-600 hover:bg-purple-700 text-white px-4 py-2 rounded"
+          >
+            Skill Tree
+          </button>
+        </div>
       </div>
+
+      {showInventoryModal && (
+        <InventoryModal
+          inventory={pet.inventory}
+          petId={pet.id}
+          onClose={() => setShowInventoryModal(false)}
+          onPetUpdate={onPetUpdate}
+        />
+      )}
+      {showSkillTreeModal && (
+        <SkillTreeModal
+          onClose={() => setShowSkillTreeModal(false)}
+        />
+      )}
     </div>
   );
 }
\ No newline at end of file
diff --git a/src/components/modal/InventoryModal.tsx b/src/components/modal/InventoryModal.tsx
new file mode 100644
index 0000000..cc8f9f4
--- /dev/null
+++ b/src/components/modal/InventoryModal.tsx
@@ -0,0 +1,95 @@
+import React, { useState } from 'react';
+import { Inventory, InvItemInteraction, Pet } from '../../types/Pet';
+import { putPetItemInteract } from '../../services/api/api';
+
+interface InventoryModalProps {
+  inventory: Inventory;
+  petId: string;
+  onClose: () => void;
+  onPetUpdate: (updatedPet: Pet) => void;  // Add this prop
+}
+
+export default function InventoryModal({ inventory, petId, onClose, onPetUpdate }: InventoryModalProps) {
+  const capacity = inventory.capacity; // Expected to be 20 for 4 rows x 5 cols
+  const items = inventory.items;
+  const gridSlots = Array.from({ length: capacity }, (_, i) => items[i]);
+  const [selectedItemIndex, setSelectedItemIndex] = useState<number | null>(null);
+
+  const handleItemClick = (index: number) => {
+    if (selectedItemIndex === index || gridSlots[index] === undefined) {
+        setSelectedItemIndex(null);
+    }
+    else {
+        setSelectedItemIndex(index);
+    }
+  };
+
+  const handleInteraction = async (interaction: InvItemInteraction) => {
+    if (selectedItemIndex === null || gridSlots[selectedItemIndex] === undefined) return;
+    try {
+      const updatedPet = await putPetItemInteract(petId, gridSlots[selectedItemIndex], interaction);
+      onPetUpdate(updatedPet);
+    } catch (error) {
+      console.error('Item interaction failed:', error);
+    }
+  };
+
+  return (
+    <div className="fixed inset-0 bg-black/80 backdrop-blur-sm flex items-center justify-center p-4 z-50">
+      <div className="bg-gray-800 p-6 rounded-xl max-w-2xl w-full">
+        <div className="flex justify-between items-center mb-4">
+          <h2 className="text-2xl font-bold">Inventory</h2>
+          <button
+            onClick={onClose}
+            className="bg-red-600 hover:bg-red-700 text-white px-2 py-1 rounded"
+          >
+            Close
+          </button>
+        </div>
+        <div className="grid grid-cols-5 grid-rows-4 gap-4">
+          {gridSlots.map((item, index) => (
+            <div
+              key={index}
+              onClick={() => handleItemClick(index)}
+              className={`border rounded p-4 flex items-center justify-center h-16
+                ${item !== undefined ? 'bg-gray-700 cursor-pointer' : 'bg-gray-800 text-gray-500'}
+                ${selectedItemIndex === index ? 'border-blue-500 animate-pulse' : 'border-gray-600'}`}
+            >
+              {item !== undefined ? <span>{item}</span> : <span className="text-gray-500">Empty</span>}
+            </div>
+          ))}
+        </div>
+        <div className="mt-4 grid grid-cols-4 gap-4">
+          <button
+            disabled={selectedItemIndex === null}
+            onClick={() => handleInteraction('USE')}
+            className="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded disabled:opacity-50"
+          >
+            Use
+          </button>
+          <button
+            disabled={selectedItemIndex === null}
+            onClick={() => handleInteraction('DROP')}
+            className="bg-red-600 hover:bg-red-700 text-white px-4 py-2 rounded disabled:opacity-50"
+          >
+            Drop
+          </button>
+          <button
+            disabled={selectedItemIndex === null}
+            onClick={() => handleInteraction('EQUIP')}
+            className="bg-green-600 hover:bg-green-700 text-white px-4 py-2 rounded disabled:opacity-50"
+          >
+            Equip
+          </button>
+          <button
+            disabled={selectedItemIndex === null}
+            onClick={() => handleInteraction('UNEQUIP')}
+            className="bg-yellow-600 hover:bg-yellow-700 text-white px-4 py-2 rounded disabled:opacity-50"
+          >
+            Unequip
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/src/components/modal/SkillTreeModal.tsx b/src/components/modal/SkillTreeModal.tsx
new file mode 100644
index 0000000..381f1dc
--- /dev/null
+++ b/src/components/modal/SkillTreeModal.tsx
@@ -0,0 +1,26 @@
+import React from 'react';
+
+interface SkillTreeModalProps {
+  onClose: () => void;
+}
+
+export default function SkillTreeModal({ onClose }: SkillTreeModalProps) {
+  return (
+    <div
+      className="fixed inset-0 bg-black/80 backdrop-blur-sm flex items-center justify-center p-4 z-50"
+    >
+      <div className="bg-gray-800 p-6 rounded-xl max-w-2xl w-full">
+        <h2 className="text-2xl font-bold mb-4">Skill Tree</h2>
+        <p className="text-gray-400 mb-6">Skill tree modal under development.</p>
+        <div className="mt-6 flex justify-end">
+          <button
+            onClick={onClose}
+            className="bg-red-600 hover:bg-red-700 text-white px-4 py-2 rounded"
+          >
+            Close
+          </button>
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/src/services/api/api.ts b/src/services/api/api.ts
index 7bfd02d..e2722f0 100644
--- a/src/services/api/api.ts
+++ b/src/services/api/api.ts
@@ -1,5 +1,5 @@
 import { ApiService } from './index';
-import { Pet, Resources } from '../../types/Pet';
+import { InvItemInteraction, Pet, Resources } from '../../types/Pet';
 import { PetCreationRequest } from '../../types/PetCreationRequest';
 import { PetUpdateActionRequest } from '../../types/PetUpdateActionRequest';
 import { PetSkill, Skill } from '../../types/Skills';
@@ -42,7 +42,12 @@ export async function getPetSkills(petId: string): Promise<PetSkill[]> {
   return response.data;
 }
 
-export async function postAllocatePetSkill(petId: string, skillId: int): Promise<PetSkill> {
-  const response = await api.get<PetSkill>(`/api/v1/skill/${petId}/allocate/${skillId}`);
+export async function postAllocatePetSkill(petId: string, skillId: number): Promise<PetSkill> {
+  const response = await api.post<PetSkill>(`/api/v1/skill/${petId}/allocate/${skillId}`);
+  return response.data;
+}
+
+export async function putPetItemInteract(petId: string, itemId: number, inter: InvItemInteraction): Promise<Pet> {
+  const response = await api.put<Pet>(`/api/v1/inventory/${petId}/${itemId}/${inter.toLowerCase()}`);
   return response.data;
 }
\ No newline at end of file
diff --git a/src/types/Pet.ts b/src/types/Pet.ts
index 37f68d8..0dc6904 100755
--- a/src/types/Pet.ts
+++ b/src/types/Pet.ts
@@ -35,6 +35,7 @@ export interface Pet {
   inventory: Inventory;
 }
 
+export type InvItemInteraction = 'EQUIP' | 'UNEQUIP' | 'USE' | 'DROP';
 export interface Inventory {
   items: number[];
   capacity: number;