diff --git a/src/api/invitations.ts b/src/api/invitations.ts
index a40a0f5..52bf0d1 100644
--- a/src/api/invitations.ts
+++ b/src/api/invitations.ts
@@ -1,4 +1,4 @@
-import { fetchApi } from '@/api/client'
+import { api, fetchApi } from '@/api/client'
 
 export type Household = { id: number; name: string; slug: string }
 
@@ -40,11 +40,10 @@ export async function acceptInvitation(token: string): Promise<Household> {
   return { id: h.id, name: h.name, slug: h.slug }
 }
 
-export async function sendInvitation(email: string): Promise<void> {
-  const resp = await fetchApi('/api/v1/invitations', {
-    method: 'POST',
-    headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify({ email }),
+export async function sendInvitation(householdSlug: string, email: string): Promise<void> {
+  const res = await api.POST('/api/v1/households/{householdSlug}/invitations', {
+    params: { path: { householdSlug } },
+    body: { email },
   })
-  if (!resp.ok && resp.status !== 204) throw new Error(`${resp.status} ${resp.statusText || 'HTTP error'}`)
+  if (!res.response.ok) throw new Error(`${res.response.status} ${res.response.statusText || 'HTTP error'}`)
 }
diff --git a/src/views/HouseholdSettings.vue b/src/views/HouseholdSettings.vue
index 81cbc68..7bc9856 100644
--- a/src/views/HouseholdSettings.vue
+++ b/src/views/HouseholdSettings.vue
@@ -54,15 +54,18 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted } from 'vue'
+import { ref, onMounted, computed } from 'vue'
 import { sendInvitation } from '@/api/invitations'
 import { listMembers, type Member } from '@/api/households'
+import { useRoute } from 'vue-router'
 
 const email = ref('')
 const submitting = ref(false)
 const message = ref('')
 const error = ref('')
 const members = ref<Member[]>([])
+const route = useRoute()
+const householdSlug = computed(() => (typeof route.params.householdSlug === 'string' ? route.params.householdSlug : null))
 
 onMounted(async () => {
   try {
@@ -77,7 +80,9 @@ async function onInvite() {
   error.value = ''
   submitting.value = true
   try {
-    await sendInvitation(email.value.trim())
+    const slug = householdSlug.value
+    if (!slug) throw new Error('No household selected')
+    await sendInvitation(slug, email.value.trim())
     message.value = 'Invitation sent.'
     email.value = ''
   } catch (e) {
diff --git a/tests/invitations.send.api.test.ts b/tests/invitations.send.api.test.ts
index 5e84dfe..4a9dd16 100644
--- a/tests/invitations.send.api.test.ts
+++ b/tests/invitations.send.api.test.ts
@@ -2,10 +2,9 @@ import { describe, it, expect } from 'vitest'
 import { server, http, HttpResponse } from './test-setup'
 import { loginWithPassword } from '@/api/auth'
 import { sendInvitation } from '@/api/invitations'
-import { setHouseholdSlugProvider } from '@/api/client'
 
 describe('invitations api (send invite)', () => {
-  it('posts email with Authorization and X-Household-Slug', async () => {
+  it('posts email with Authorization and householdSlug path param', async () => {
     // Simulate auth token
     server.use(
       http.post('*/api/v1/auth/login', () =>
@@ -14,21 +13,16 @@ describe('invitations api (send invite)', () => {
     )
     await loginWithPassword('x@y', 'pw')
 
-    // Provide a household slug for header injection
-    setHouseholdSlugProvider(() => 'the-smiths')
-
     server.use(
-      http.post('*/api/v1/invitations', async ({ request }) => {
+      http.post('*/api/v1/households/the-smiths/invitations', async ({ request, requestId, cookies, params }) => {
         const body = await request.json()
         expect(body).toEqual({ email: 'invite@example.com' })
         const auth = request.headers.get('authorization')
         expect(auth?.toLowerCase()).toBe('bearer tokabc')
-        const slug = request.headers.get('x-household-slug')
-        expect(slug).toBe('the-smiths')
         return HttpResponse.json({}, { status: 204 })
       })
     )
 
-    await expect(sendInvitation('invite@example.com')).resolves.toBeUndefined()
+    await expect(sendInvitation('the-smiths', 'invite@example.com')).resolves.toBeUndefined()
   })
 })