diff --git a/src/haunt_fm/api/history.py b/src/haunt_fm/api/history.py
index c493851..2ce2a08 100644
--- a/src/haunt_fm/api/history.py
+++ b/src/haunt_fm/api/history.py
@@ -36,4 +36,6 @@ async def receive_webhook(payload: WebhookPayload, session: AsyncSession = Depen
         listened_at=payload.listened_at,
         raw_payload=payload.model_dump(mode="json"),
     )
+    if event is None:
+        return {"ok": True, "duplicate": True}
     return {"ok": True, "track_id": event.track_id, "event_id": event.id}
diff --git a/src/haunt_fm/services/history_ingest.py b/src/haunt_fm/services/history_ingest.py
index f4f214c..3f66d89 100644
--- a/src/haunt_fm/services/history_ingest.py
+++ b/src/haunt_fm/services/history_ingest.py
@@ -1,10 +1,13 @@
-from datetime import datetime
+import logging
+from datetime import datetime, timedelta, timezone
 
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from haunt_fm.models.track import ListenEvent, Track
 
+logger = logging.getLogger(__name__)
+
 
 def make_fingerprint(artist: str, title: str) -> str:
     return f"{artist.lower().strip()}::{title.lower().strip()}"
@@ -47,9 +50,22 @@ async def ingest_listen_event(
     source: str,
     listened_at: datetime,
     raw_payload: dict | None = None,
-) -> ListenEvent:
+) -> ListenEvent | None:
     track = await upsert_track(session, title, artist, album)
 
+    # Deduplicate: skip if this track was logged within the last 60 seconds.
+    # Multiple HA entities (Cast, WiFi, MA) fire simultaneously for the same play event.
+    cutoff = datetime.now(timezone.utc) - timedelta(seconds=60)
+    recent = await session.execute(
+        select(ListenEvent)
+        .where(ListenEvent.track_id == track.id)
+        .where(ListenEvent.listened_at > cutoff)
+        .limit(1)
+    )
+    if recent.scalar_one_or_none() is not None:
+        logger.debug("Skipping duplicate listen event for %s - %s", artist, title)
+        return None
+
     event = ListenEvent(
         track_id=track.id,
         source=source,