Update app.py

app.py

@@ -461,6 +461,12 @@ class DatasetRequest(BaseModel):
 async def health():
     return {"status": "ok", "model": LLM_MODEL_ID, "zerogpu": _ZEROGPU}
 
+@_fastapi.get("/ping", tags=["Utility"])
+async def ping(request: Request):
+    """Health-check endpoint – wakes the Space if sleeping."""
+    if not await _authenticate(request):
+        raise HTTPException(status_code=403, detail="Forbidden")
+    return JSONResponse(content={"status": "alive"})
 
 # ─────────────────────────────────────────────────────────────────────────────
 #  Change 3: /dataset endpoint