diff --git a/apps/builder/components/share/ShareContent.tsx b/apps/builder/components/share/ShareContent.tsx
index e3e20071e..ba4c7a91d 100644
--- a/apps/builder/components/share/ShareContent.tsx
+++ b/apps/builder/components/share/ShareContent.tsx
@@ -22,16 +22,22 @@ import { getViewerUrl, isDefined, isNotDefined } from 'utils'
 import { CustomDomainsDropdown } from './customDomain/CustomDomainsDropdown'
 import { EditableUrl } from './EditableUrl'
 import { integrationsList } from './integrations/EmbedButton'
+import { isPublicDomainAvailableQuery } from './queries/isPublicDomainAvailableQuery'
 
 export const ShareContent = () => {
   const { workspace } = useWorkspace()
   const { typebot, updateTypebot } = useTypebot()
   const { showToast } = useToast()
 
-  const handlePublicIdChange = (publicId: string) => {
+  const handlePublicIdChange = async (publicId: string) => {
     if (publicId === typebot?.publicId) return
     if (publicId.length < 4)
       return showToast({ description: 'ID must be longer than 4 characters' })
+
+    const { data } = await isPublicDomainAvailableQuery(publicId)
+    if (!data?.isAvailable)
+      return showToast({ description: 'ID is already taken' })
+
     updateTypebot({ publicId })
   }
 
diff --git a/apps/builder/components/share/queries/isPublicDomainAvailableQuery.ts b/apps/builder/components/share/queries/isPublicDomainAvailableQuery.ts
new file mode 100644
index 000000000..3d4a74332
--- /dev/null
+++ b/apps/builder/components/share/queries/isPublicDomainAvailableQuery.ts
@@ -0,0 +1,7 @@
+import { sendRequest } from 'utils'
+
+export const isPublicDomainAvailableQuery = (publicId: string) =>
+  sendRequest<{ isAvailable: boolean }>({
+    method: 'GET',
+    url: `/api/publicIdAvailable?publicId=${publicId}`,
+  })
diff --git a/apps/builder/pages/api/publicIdAvailable.ts b/apps/builder/pages/api/publicIdAvailable.ts
new file mode 100644
index 000000000..72578c184
--- /dev/null
+++ b/apps/builder/pages/api/publicIdAvailable.ts
@@ -0,0 +1,19 @@
+import { withSentry } from '@sentry/nextjs'
+import prisma from 'libs/prisma'
+import { NextApiRequest, NextApiResponse } from 'next'
+import { getAuthenticatedUser } from 'services/api/utils'
+import { badRequest, methodNotAllowed, notAuthenticated } from 'utils/api'
+
+const handler = async (req: NextApiRequest, res: NextApiResponse) => {
+  const user = await getAuthenticatedUser(req)
+  if (!user) return notAuthenticated(res)
+  if (req.method === 'GET') {
+    const publicId = req.query.publicId as string | undefined
+    if (!publicId) return badRequest(res, 'publicId is required')
+    const exists = await prisma.typebot.count({ where: { publicId } })
+    return res.send({ isAvailable: Boolean(!exists) })
+  }
+  return methodNotAllowed(res)
+}
+
+export default withSentry(handler)
diff --git a/apps/builder/playwright/tests/share.spec.ts b/apps/builder/playwright/tests/share.spec.ts
new file mode 100644
index 000000000..ad529ff27
--- /dev/null
+++ b/apps/builder/playwright/tests/share.spec.ts
@@ -0,0 +1,35 @@
+import test, { expect } from '@playwright/test'
+import cuid from 'cuid'
+import { defaultTextInputOptions, InputBlockType } from 'models'
+import { createTypebots } from 'utils/playwright/databaseActions'
+import { parseDefaultGroupWithBlock } from 'utils/playwright/databaseHelpers'
+
+test('should not be able to submit taken url ID', async ({ page }) => {
+  const takenTypebotId = cuid()
+  const typebotId = cuid()
+  await createTypebots([
+    {
+      id: takenTypebotId,
+      ...parseDefaultGroupWithBlock({
+        type: InputBlockType.TEXT,
+        options: defaultTextInputOptions,
+      }),
+      publicId: 'taken-url-id',
+    },
+  ])
+  await createTypebots([
+    {
+      id: typebotId,
+      ...parseDefaultGroupWithBlock({
+        type: InputBlockType.TEXT,
+        options: defaultTextInputOptions,
+      }),
+      publicId: typebotId + '-public',
+    },
+  ])
+  await page.goto(`/typebots/${typebotId}/share`)
+  await page.getByText(`${typebotId}-public`).click()
+  await page.getByRole('textbox').fill('taken-url-id')
+  await page.getByRole('textbox').press('Enter')
+  await expect(page.getByText('ID is already taken').nth(0)).toBeVisible()
+})
diff --git a/packages/utils/playwright/databaseActions.ts b/packages/utils/playwright/databaseActions.ts
index 6b777a7be..02b1d3257 100644
--- a/packages/utils/playwright/databaseActions.ts
+++ b/packages/utils/playwright/databaseActions.ts
@@ -159,7 +159,7 @@ export const createTypebots = async (partialTypebots: Partial<Typebot>[]) => {
     return {
       ...typebot,
       id: typebotId,
-      publicId: typebotId + '-public',
+      publicId: typebot.publicId ?? typebotId + '-public',
     }
   })
   await prisma.typebot.createMany({
@@ -167,7 +167,7 @@ export const createTypebots = async (partialTypebots: Partial<Typebot>[]) => {
   })
   return prisma.publicTypebot.createMany({
     data: typebotsWithId.map((t) =>
-      parseTypebotToPublicTypebot(t.id + '-public', parseTestTypebot(t))
+      parseTypebotToPublicTypebot(t.publicId, parseTestTypebot(t))
     ),
   })
 }