diff --git a/app/api/realtime/notifications/route.ts b/app/api/realtime/notifications/route.ts
index 1d32a2f..4f42d05 100644
--- a/app/api/realtime/notifications/route.ts
+++ b/app/api/realtime/notifications/route.ts
@@ -53,7 +53,20 @@ interface IdeaJobPayload {
   status: string
 }
 
-type NotifyPayload = QuestionPayload | IdeaJobPayload
+// Story-log-payloads: emitted by notify_story_log_change trigger op story_logs
+// (T-559). Carries product_id voor productAccessFilter en optioneel idea_id
+// voor user-private idea-access (M12 keuze 2). log_type is informatief.
+interface StoryLogPayload {
+  op: 'INSERT'
+  entity: 'story_log'
+  id: string
+  story_id: string
+  product_id: string | null
+  idea_id: string | null
+  log_type: 'IMPLEMENTATION_PLAN' | 'COMMIT' | 'TEST_RESULT' | string
+}
+
+type NotifyPayload = QuestionPayload | IdeaJobPayload | StoryLogPayload
 
 function isQuestionPayload(p: NotifyPayload): p is QuestionPayload {
   return 'entity' in p && p.entity === 'question'
@@ -69,6 +82,10 @@ function isIdeaJobPayload(p: NotifyPayload): p is IdeaJobPayload {
   )
 }
 
+function isStoryLogPayload(p: NotifyPayload): p is StoryLogPayload {
+  return 'entity' in p && p.entity === 'story_log'
+}
+
 export async function GET(request: NextRequest) {
   const session = await getSession()
   if (!session.userId) {
@@ -164,6 +181,21 @@ export async function GET(request: NextRequest) {
           return
         }
 
+        if (isStoryLogPayload(payload)) {
+          // Sync-tab (PBI-36 ST-1219): story_log-event moet door als óf de
+          // story bij een user-eigen idee hoort, óf de user productAccess
+          // heeft (voor non-Idea views). idea_id-pad heeft voorrang —
+          // sluit aan op M12 strikt user_id-only voor ideas.
+          if (payload.idea_id && accessibleIdeaIds.has(payload.idea_id)) {
+            enqueue(`data: ${msg.payload}\n\n`)
+            return
+          }
+          if (payload.product_id && accessibleProductIds.has(payload.product_id)) {
+            enqueue(`data: ${msg.payload}\n\n`)
+          }
+          return
+        }
+
         if (!isQuestionPayload(payload)) return
 
         // Idea-question: alleen voor de eigenaar van het idee.