Update app.py

app.py

@@ -118,4 +118,23 @@ async def predict(req: Request):
         "z_scores": z_detail,
         "probabilities": {CLASSES[i]: float(probs[i]) for i in range(len(CLASSES))},
         "predicted_state": CLASSES[pred_idx],
-    }
+    }
+
+    # ---- add to app.py ----
+from fastapi import FastAPI, HTTPException, Request
+from fastapi.responses import JSONResponse
+import traceback
+
+@app.post("/echo")
+async def echo(payload: dict):
+    return {"received": payload}
+
+@app.post("/predict")
+async def predict(payload: dict):
+    try:
+        return predict_from_json(payload)  # your existing function
+    except Exception as e:
+        tb = traceback.format_exc()
+        print("PREDICT ERROR:", tb)
+        # Return 400 with details so Excel can read it
+        return JSONResponse(status_code=400, content={"error": str(e)})