diff --git a/app/composables/useComposants.ts b/app/composables/useComposants.ts
index e9e9bce..be1d070 100644
--- a/app/composables/useComposants.ts
+++ b/app/composables/useComposants.ts
@@ -4,6 +4,7 @@ import { useApi } from './useApi'
 import { buildConstructeurRequestPayload, uniqueConstructeurIds } from '~/shared/constructeurUtils'
 import { useConstructeurs, type Constructeur } from './useConstructeurs'
 import { extractRelationId, normalizeRelationIds } from '~/shared/apiRelations'
+import { extractCollection } from '~/shared/utils/apiHelpers'
 
 export interface Composant {
   id: string
@@ -45,23 +46,6 @@ const composants = ref<Composant[]>([])
 const total = ref(0)
 const loading = ref(false)
 
-const extractCollection = (payload: unknown): Composant[] => {
-  if (Array.isArray(payload)) {
-    return payload as Composant[]
-  }
-  const p = payload as Record<string, unknown> | null
-  if (Array.isArray(p?.member)) {
-    return p.member as Composant[]
-  }
-  if (Array.isArray(p?.['hydra:member'])) {
-    return p['hydra:member'] as Composant[]
-  }
-  if (Array.isArray(p?.data)) {
-    return p.data as Composant[]
-  }
-  return []
-}
-
 const extractTotal = (payload: unknown, fallbackLength: number): number => {
   const p = payload as Record<string, unknown> | null
   if (typeof p?.totalItems === 'number') {
diff --git a/app/composables/useConstructeurs.ts b/app/composables/useConstructeurs.ts
index 7da2c76..9e4f36c 100644
--- a/app/composables/useConstructeurs.ts
+++ b/app/composables/useConstructeurs.ts
@@ -1,6 +1,7 @@
 import { ref } from 'vue'
 import { useApi } from './useApi'
 import { useToast } from './useToast'
+import { extractCollection } from '~/shared/utils/apiHelpers'
 
 export interface Constructeur {
   id: string
@@ -52,23 +53,6 @@ const upsertConstructeurs = (items: Constructeur[] = []) => {
 const getIndexedConstructeur = (id: string): Constructeur | null =>
   constructeurs.value.find((item) => item && item.id === id) || null
 
-const extractCollection = (payload: unknown): Constructeur[] => {
-  if (Array.isArray(payload)) {
-    return payload as Constructeur[]
-  }
-  const p = payload as Record<string, unknown> | null
-  if (Array.isArray(p?.member)) {
-    return p.member as Constructeur[]
-  }
-  if (Array.isArray(p?.['hydra:member'])) {
-    return p['hydra:member'] as Constructeur[]
-  }
-  if (Array.isArray(p?.data)) {
-    return p.data as Constructeur[]
-  }
-  return []
-}
-
 const pendingFetches = new Map<string, Promise<Constructeur | null>>()
 
 export function useConstructeurs() {
diff --git a/app/composables/useDocuments.ts b/app/composables/useDocuments.ts
index c513b12..b34e549 100644
--- a/app/composables/useDocuments.ts
+++ b/app/composables/useDocuments.ts
@@ -2,6 +2,7 @@ import { ref } from 'vue'
 import { useApi } from './useApi'
 import { useToast } from './useToast'
 import { normalizeRelationIds } from '~/shared/apiRelations'
+import { extractCollection } from '~/shared/utils/apiHelpers'
 
 export interface Document {
   id: string
@@ -34,23 +35,6 @@ export interface DocumentResult {
 const documents = ref<Document[]>([])
 const loading = ref(false)
 
-const extractCollection = (payload: unknown): Document[] => {
-  if (Array.isArray(payload)) {
-    return payload
-  }
-  const p = payload as Record<string, unknown> | null
-  if (Array.isArray(p?.member)) {
-    return p.member as Document[]
-  }
-  if (Array.isArray(p?.['hydra:member'])) {
-    return p['hydra:member'] as Document[]
-  }
-  if (Array.isArray(p?.data)) {
-    return p.data as Document[]
-  }
-  return []
-}
-
 const fileToBase64 = (file: File): Promise<string> =>
   new Promise((resolve, reject) => {
     const reader = new FileReader()
diff --git a/app/composables/usePieces.ts b/app/composables/usePieces.ts
index 0ccab82..cd11e81 100644
--- a/app/composables/usePieces.ts
+++ b/app/composables/usePieces.ts
@@ -4,6 +4,7 @@ import { useApi } from './useApi'
 import { buildConstructeurRequestPayload, uniqueConstructeurIds } from '~/shared/constructeurUtils'
 import { useConstructeurs, type Constructeur } from './useConstructeurs'
 import { extractRelationId, normalizeRelationIds } from '~/shared/apiRelations'
+import { extractCollection } from '~/shared/utils/apiHelpers'
 
 export interface Piece {
   id: string
@@ -46,23 +47,6 @@ const pieces = ref<Piece[]>([])
 const total = ref(0)
 const loading = ref(false)
 
-const extractCollection = (payload: unknown): Piece[] => {
-  if (Array.isArray(payload)) {
-    return payload as Piece[]
-  }
-  const p = payload as Record<string, unknown> | null
-  if (Array.isArray(p?.member)) {
-    return p.member as Piece[]
-  }
-  if (Array.isArray(p?.['hydra:member'])) {
-    return p['hydra:member'] as Piece[]
-  }
-  if (Array.isArray(p?.data)) {
-    return p.data as Piece[]
-  }
-  return []
-}
-
 const extractTotal = (payload: unknown, fallbackLength: number): number => {
   const p = payload as Record<string, unknown> | null
   if (typeof p?.totalItems === 'number') {
diff --git a/app/composables/useProducts.ts b/app/composables/useProducts.ts
index 065e501..07167a0 100644
--- a/app/composables/useProducts.ts
+++ b/app/composables/useProducts.ts
@@ -4,6 +4,7 @@ import { useApi } from './useApi'
 import { buildConstructeurRequestPayload, uniqueConstructeurIds } from '~/shared/constructeurUtils'
 import { useConstructeurs, type Constructeur } from './useConstructeurs'
 import { extractRelationId, normalizeRelationIds } from '~/shared/apiRelations'
+import { extractCollection } from '~/shared/utils/apiHelpers'
 
 export interface Product {
   id: string
@@ -62,23 +63,6 @@ const replaceInCache = (item: Product): boolean => {
   return false
 }
 
-const extractCollection = (payload: unknown): Product[] => {
-  if (Array.isArray(payload)) {
-    return payload as Product[]
-  }
-  const p = payload as Record<string, unknown> | null
-  if (Array.isArray(p?.member)) {
-    return p.member as Product[]
-  }
-  if (Array.isArray(p?.['hydra:member'])) {
-    return p['hydra:member'] as Product[]
-  }
-  if (Array.isArray(p?.data)) {
-    return p.data as Product[]
-  }
-  return []
-}
-
 const extractTotal = (payload: unknown, fallbackLength: number): number => {
   const p = payload as Record<string, unknown> | null
   if (typeof p?.totalItems === 'number') {
diff --git a/app/composables/useSites.ts b/app/composables/useSites.ts
index 022ba56..b6e23bd 100644
--- a/app/composables/useSites.ts
+++ b/app/composables/useSites.ts
@@ -1,6 +1,7 @@
 import { ref } from 'vue'
 import { useToast } from './useToast'
 import { useApi } from './useApi'
+import { extractCollection } from '~/shared/utils/apiHelpers'
 
 export interface Site {
   id: string
@@ -24,23 +25,6 @@ interface SiteResult {
 const sites = ref<Site[]>([])
 const loading = ref(false)
 
-const extractCollection = (payload: unknown): Site[] => {
-  if (Array.isArray(payload)) {
-    return payload as Site[]
-  }
-  const p = payload as Record<string, unknown> | null
-  if (Array.isArray(p?.member)) {
-    return p.member as Site[]
-  }
-  if (Array.isArray(p?.['hydra:member'])) {
-    return p['hydra:member'] as Site[]
-  }
-  if (Array.isArray(p?.data)) {
-    return p.data as Site[]
-  }
-  return []
-}
-
 export function useSites() {
   const { showSuccess, showInfo } = useToast()
   const { get, post, patch, delete: del } = useApi()
@@ -49,8 +33,6 @@ export function useSites() {
     loading.value = true
     try {
       const result = await get('/sites')
-      console.log('sites api result', result)
-
       if (result.success) {
         const collection = extractCollection(result.data)
         sites.value = collection
diff --git a/app/shared/utils/apiHelpers.ts b/app/shared/utils/apiHelpers.ts
new file mode 100644
index 0000000..54e9640
--- /dev/null
+++ b/app/shared/utils/apiHelpers.ts
@@ -0,0 +1,16 @@
+/**
+ * Shared API response helpers.
+ *
+ * Extracted from 10+ composables/components that each had an identical local
+ * copy of extractCollection (parsing hydra:member / member / data / array).
+ */
+
+export function extractCollection<T = any>(payload: unknown): T[] {
+  if (Array.isArray(payload)) return payload as T[]
+  const p = payload as Record<string, unknown> | null
+  if (Array.isArray(p?.member)) return p!.member as T[]
+  if (Array.isArray(p?.['hydra:member'])) return p!['hydra:member'] as T[]
+  if (Array.isArray(p?.items)) return p!.items as T[]
+  if (Array.isArray(p?.data)) return p!.data as T[]
+  return []
+}