diff --git a/backend/database/src/index.ts b/backend/database/src/index.ts
index 4cf8d51..4e1610f 100644
--- a/backend/database/src/index.ts
+++ b/backend/database/src/index.ts
@@ -36,6 +36,9 @@ export default {
 					const id = params.get("id") as string;
 					const res = await db.query.sandbox.findFirst({
 						where: (sandbox, { eq }) => eq(sandbox.id, id),
+						with: {
+							usersToSandboxes: true,
+						},
 					});
 					return json(res ?? {});
 				} else {
@@ -99,9 +102,18 @@ export default {
 
 			const user = await db.query.user.findFirst({
 				where: (user, { eq }) => eq(user.email, email),
+				with: {
+					usersToSandboxes: true,
+				},
 			});
 
-			if (!user) return invalidRequest;
+			if (!user) {
+				return new Response("No user associated with email.", { status: 400 });
+			}
+
+			if (user.usersToSandboxes.find((uts) => uts.sandboxId === sandboxId)) {
+				return new Response("User already has access.", { status: 400 });
+			}
 
 			await db.insert(usersToSandboxes).values({ userId: user.id, sandboxId }).get();
 
diff --git a/backend/server/src/types.ts b/backend/server/src/types.ts
index be0d21f..650f529 100644
--- a/backend/server/src/types.ts
+++ b/backend/server/src/types.ts
@@ -5,6 +5,10 @@ export type User = {
   name: string
   email: string
   sandbox: Sandbox[]
+  usersToSandboxes: {
+    userId: string
+    sandboxId: string
+  }[]
 }
 
 export type Sandbox = {
@@ -13,6 +17,10 @@ export type Sandbox = {
   type: "react" | "node"
   visibility: "public" | "private"
   userId: string
+  usersToSandboxes: {
+    userId: string
+    sandboxId: string
+  }[]
 }
 
 export type TFolder = {
diff --git a/frontend/app/(app)/code/[id]/page.tsx b/frontend/app/(app)/code/[id]/page.tsx
index b0d646d..765c4b8 100644
--- a/frontend/app/(app)/code/[id]/page.tsx
+++ b/frontend/app/(app)/code/[id]/page.tsx
@@ -1,5 +1,5 @@
 import Navbar from "@/components/editor/navbar"
-import { Sandbox, User } from "@/lib/types"
+import { Sandbox, User, UsersToSandboxes } from "@/lib/types"
 import { currentUser } from "@clerk/nextjs"
 import dynamic from "next/dynamic"
 import { redirect } from "next/navigation"
@@ -20,6 +20,20 @@ const getSandboxData = async (id: string) => {
   return sandboxData
 }
 
+const getSharedUsers = async (usersToSandboxes: UsersToSandboxes[]) => {
+  const shared = await Promise.all(
+    usersToSandboxes.map(async (user) => {
+      const userRes = await fetch(
+        `http://localhost:8787/api/user?id=${user.userId}`
+      )
+      const userData: User = await userRes.json()
+      return { id: userData.id, name: userData.name }
+    })
+  )
+
+  return shared
+}
+
 export default async function CodePage({ params }: { params: { id: string } }) {
   const user = await currentUser()
   const sandboxId = params.id
@@ -30,12 +44,13 @@ export default async function CodePage({ params }: { params: { id: string } }) {
 
   const userData = await getUserData(user.id)
   const sandboxData = await getSandboxData(sandboxId)
+  const shared = await getSharedUsers(sandboxData.usersToSandboxes)
 
   return (
     <div className="overflow-hidden overscroll-none w-screen flex flex-col h-screen bg-background">
-      <Navbar userData={userData} sandboxData={sandboxData} />
+      <Navbar userData={userData} sandboxData={sandboxData} shared={shared} />
       <div className="w-screen flex grow">
-        <CodeEditor userId={user.id} sandboxId={sandboxId} />
+        <CodeEditor userData={userData} sandboxId={sandboxId} />
       </div>
     </div>
   )
diff --git a/frontend/components/editor/index.tsx b/frontend/components/editor/index.tsx
index 2365b84..089488a 100644
--- a/frontend/components/editor/index.tsx
+++ b/frontend/components/editor/index.tsx
@@ -30,12 +30,13 @@ import { processFileType, validateName } from "@/lib/utils"
 import { toast } from "sonner"
 import EditorTerminal from "./terminal"
 import { Button } from "../ui/button"
+import { User } from "@/lib/types"
 
 export default function CodeEditor({
-  userId,
+  userData,
   sandboxId,
 }: {
-  userId: string
+  userData: User
   sandboxId: string
 }) {
   const clerk = useClerk()
@@ -54,7 +55,7 @@ export default function CodeEditor({
   const [terminals, setTerminals] = useState<string[]>([])
 
   const socket = io(
-    `http://localhost:4000?userId=${userId}&sandboxId=${sandboxId}`
+    `http://localhost:4000?userId=${userData.id}&sandboxId=${sandboxId}`
   )
 
   useEffect(() => {
diff --git a/frontend/components/editor/navbar/index.tsx b/frontend/components/editor/navbar/index.tsx
index 7dff4f2..ae45487 100644
--- a/frontend/components/editor/navbar/index.tsx
+++ b/frontend/components/editor/navbar/index.tsx
@@ -14,9 +14,14 @@ import ShareSandboxModal from "./share"
 export default function Navbar({
   userData,
   sandboxData,
+  shared,
 }: {
   userData: User
   sandboxData: Sandbox
+  shared: {
+    id: string
+    name: string
+  }[]
 }) {
   const [isEditOpen, setIsEditOpen] = useState(false)
   const [isShareOpen, setIsShareOpen] = useState(false)
@@ -32,6 +37,7 @@ export default function Navbar({
         open={isShareOpen}
         setOpen={setIsShareOpen}
         data={sandboxData}
+        shared={shared}
       />
       <div className="h-14 px-2 w-full flex items-center justify-between border-b border-border">
         <div className="flex items-center space-x-4">
diff --git a/frontend/components/editor/navbar/share.tsx b/frontend/components/editor/navbar/share.tsx
index f941c3e..67ebf3d 100644
--- a/frontend/components/editor/navbar/share.tsx
+++ b/frontend/components/editor/navbar/share.tsx
@@ -30,8 +30,8 @@ import {
   SelectValue,
 } from "@/components/ui/select"
 import { Loader2, UserPlus, X } from "lucide-react"
-import { useState, useTransition } from "react"
-import { Sandbox } from "@/lib/types"
+import { useEffect, useState, useTransition } from "react"
+import { Sandbox, User } from "@/lib/types"
 import { Button } from "@/components/ui/button"
 import Avatar from "@/components/ui/avatar"
 import { shareSandbox } from "@/lib/actions"
@@ -45,10 +45,15 @@ export default function ShareSandboxModal({
   open,
   setOpen,
   data,
+  shared,
 }: {
   open: boolean
   setOpen: (open: boolean) => void
   data: Sandbox
+  shared: {
+    id: string
+    name: string
+  }[]
 }) {
   const [loading, setLoading] = useState(false)
 
@@ -60,17 +65,12 @@ export default function ShareSandboxModal({
   })
 
   async function onSubmit(values: z.infer<typeof formSchema>) {
-    // if (!user.isSignedIn) return
-    // const sandboxData = { type: selected, userId: user.user.id, ...values }
-    // setLoading(true)
-    // const id = await createSandbox(sandboxData)
-
-    console.log(values)
-
     setLoading(true)
     const res = await shareSandbox(data.id, values.email)
-    if (!res) {
-      toast.error("Failed to share.")
+    if (!res.success) {
+      toast.error(res.message)
+    } else {
+      toast.success("Shared successfully.")
     }
 
     setLoading(false)
@@ -121,15 +121,17 @@ export default function ShareSandboxModal({
             <DialogTitle>Manage Access</DialogTitle>
           </DialogHeader>
           <div className="space-y-2">
-            <div className="flex items-center justify-between">
-              <div className="flex items-center">
-                <Avatar name="Ishaan Dey" className="mr-2" />
-                Ishaan Dey
+            {shared.map((user) => (
+              <div key={user.id} className="flex items-center justify-between">
+                <div className="flex items-center">
+                  <Avatar name={user.name} className="mr-2" />
+                  {user.name}
+                </div>
+                <Button variant="ghost" size="smIcon">
+                  <X className="w-4 h-4" />
+                </Button>
               </div>
-              <Button variant="ghost" size="smIcon">
-                <X className="w-4 h-4" />
-              </Button>
-            </div>
+            ))}
           </div>
         </div>
       </DialogContent>
diff --git a/frontend/lib/actions.ts b/frontend/lib/actions.ts
index 0e59d5f..c87fd8a 100644
--- a/frontend/lib/actions.ts
+++ b/frontend/lib/actions.ts
@@ -44,18 +44,19 @@ export async function deleteSandbox(id: string) {
 }
 
 export async function shareSandbox(sandboxId: string, email: string) {
-  try {
-    const res = await fetch("http://localhost:8787/api/sandbox/share", {
-      method: "POST",
-      headers: {
-        "Content-Type": "application/json",
-      },
-      body: JSON.stringify({ sandboxId, email }),
-    })
+  const res = await fetch("http://localhost:8787/api/sandbox/share", {
+    method: "POST",
+    headers: {
+      "Content-Type": "application/json",
+    },
+    body: JSON.stringify({ sandboxId, email }),
+  })
+  const text = await res.text()
 
-    revalidatePath(`/code/${sandboxId}`)
-    return true
-  } catch (err) {
-    return false
+  if (res.status !== 200) {
+    return { success: false, message: text }
   }
+
+  revalidatePath(`/code/${sandboxId}`)
+  return { success: true, message: "Shared successfully." }
 }
diff --git a/frontend/lib/types.ts b/frontend/lib/types.ts
index 7b729ee..01739ca 100644
--- a/frontend/lib/types.ts
+++ b/frontend/lib/types.ts
@@ -5,6 +5,7 @@ export type User = {
   name: string
   email: string
   sandbox: Sandbox[]
+  usersToSandboxes: UsersToSandboxes[]
 }
 
 export type Sandbox = {
@@ -13,6 +14,12 @@ export type Sandbox = {
   type: "react" | "node"
   visibility: "public" | "private"
   userId: string
+  usersToSandboxes: UsersToSandboxes[]
+}
+
+export type UsersToSandboxes = {
+  userId: string
+  sandboxId: string
 }
 
 export type R2Files = {