diff --git a/app/serializers.py b/app/serializers.py
index 4a1b54e..ec8ce8a 100644
--- a/app/serializers.py
+++ b/app/serializers.py
@@ -11,7 +11,7 @@ class Meta:
 class HsCodeSerializer(serializers.ModelSerializer):
     class Meta:
         model = HsCode
-        fields = "__all__"
+        fields = ["id", "hs_code", "description", "created_at"]
 
 
 class CategorySerializer(serializers.ModelSerializer):
diff --git a/app/services/category_service.py b/app/services/category_service.py
deleted file mode 100644
index 80a6a22..0000000
--- a/app/services/category_service.py
+++ /dev/null
@@ -1,111 +0,0 @@
-# Chapter-to-category mapping for ZIMRA HS codes
-HS_CHAPTER_CATEGORIES = {
-    "01": "Live Animals",
-    "02": "Meat & Edible Offal",
-    "03": "Fish & Seafood",
-    "04": "Dairy, Eggs & Honey",
-    "05": "Other Animal Products",
-    "06": "Live Plants & Flowers",
-    "07": "Vegetables",
-    "08": "Fruit & Nuts",
-    "09": "Coffee, Tea & Spices",
-    "10": "Cereals",
-    "11": "Milling Products",
-    "12": "Oil Seeds & Misc Grains",
-    "13": "Lac, Gums & Resins",
-    "14": "Vegetable Plaiting Materials",
-    "15": "Animal & Vegetable Fats & Oils",
-    "16": "Prepared Meat & Fish",
-    "17": "Sugars & Confectionery",
-    "18": "Cocoa & Chocolate",
-    "19": "Cereals, Flour & Starch Preparations",
-    "20": "Prepared Vegetables & Fruit",
-    "21": "Misc Edible Preparations",
-    "22": "Beverages, Spirits & Vinegar",
-    "23": "Animal Feed",
-    "24": "Tobacco",
-    "25": "Salt, Sulphur & Stone",
-    "26": "Ores, Slag & Ash",
-    "27": "Mineral Fuels & Oils",
-    "28": "Inorganic Chemicals",
-    "29": "Organic Chemicals",
-    "30": "Pharmaceutical Products",
-    "31": "Fertilisers",
-    "32": "Tanning, Dyeing & Paints",
-    "33": "Essential Oils & Cosmetics",
-    "34": "Soap, Waxes & Polishes",
-    "35": "Albuminoidal Substances & Glues",
-    "36": "Explosives & Pyrotechnics",
-    "37": "Photographic Products",
-    "38": "Miscellaneous Chemical Products",
-    "39": "Plastics",
-    "40": "Rubber",
-    "41": "Raw Hides & Leather",
-    "42": "Leather Articles & Handbags",
-    "43": "Furskins",
-    "44": "Wood & Articles of Wood",
-    "45": "Cork",
-    "46": "Basketware & Wickerwork",
-    "47": "Wood Pulp & Paper Waste",
-    "48": "Paper & Paperboard",
-    "49": "Printed Books & Publications",
-    "50": "Silk",
-    "51": "Wool & Animal Hair",
-    "52": "Cotton",
-    "53": "Other Vegetable Textile Fibres",
-    "54": "Man-made Filaments",
-    "55": "Man-made Staple Fibres",
-    "56": "Wadding, Felt & Nonwovens",
-    "57": "Carpets & Floor Coverings",
-    "58": "Special Woven Fabrics",
-    "59": "Impregnated Textile Fabrics",
-    "60": "Knitted & Crocheted Fabrics",
-    "61": "Knitted Clothing",
-    "62": "Woven Clothing",
-    "63": "Other Made-up Textile Articles",
-    "64": "Footwear",
-    "65": "Headgear",
-    "66": "Umbrellas & Walking Sticks",
-    "67": "Artificial Flowers & Wigs",
-    "68": "Stone, Plaster & Cement Articles",
-    "69": "Ceramic Products",
-    "70": "Glass & Glassware",
-    "71": "Precious Stones & Jewellery",
-    "72": "Iron & Steel",
-    "73": "Iron or Steel Articles",
-    "74": "Copper",
-    "75": "Nickel",
-    "76": "Aluminium",
-    "78": "Lead",
-    "79": "Zinc",
-    "80": "Tin",
-    "81": "Other Base Metals",
-    "82": "Tools & Cutlery",
-    "83": "Miscellaneous Base Metal Articles",
-    "84": "Industrial Machinery",
-    "85": "Electrical Machinery & Electronics",
-    "86": "Railway Equipment",
-    "87": "Motor Vehicles",
-    "88": "Aircraft",
-    "89": "Ships & Boats",
-    "90": "Optical & Medical Instruments",
-    "91": "Clocks & Watches",
-    "92": "Musical Instruments",
-    "93": "Arms & Ammunition",
-    "94": "Furniture & Lighting",
-    "95": "Toys, Games & Sports",
-    "96": "Miscellaneous Manufactured Articles",
-    "97": "Works of Art",
-    "98": "Flat Rate Provisions",
-    "99": "VAT Services",
-}
-
-
-def get_or_create_category_for_hs_code(hs_code: str) -> "Category":
-    """Derive category from HS code chapter prefix and get or create it."""
-    from app.models import Category
-
-    chapter = hs_code[:2]
-    name = HS_CHAPTER_CATEGORIES.get(chapter, f"Chapter {chapter}")
-    category, _ = Category.objects.get_or_create(name=name)
-    return category
diff --git a/app/services/file_upload_service.py b/app/services/file_upload_service.py
index cd3b17a..394303d 100644
--- a/app/services/file_upload_service.py
+++ b/app/services/file_upload_service.py
@@ -2,9 +2,7 @@
 import io
 from dataclasses import dataclass
 
-from app.models import HsCode, HsCodeFile, Category
-from .category_service import HS_CHAPTER_CATEGORIES, get_or_create_category_for_hs_code
-
+from app.models import HsCode, HsCodeFile
 
 @dataclass
 class UploadResult:
diff --git a/app/views.py b/app/views.py
index b58e3e5..1500b5e 100644
--- a/app/views.py
+++ b/app/views.py
@@ -42,7 +42,9 @@ def post(self, request):
 
 class HsCodeSearchView(generics.ListAPIView):
     serializer_class = HsCodeSerializer
-
+    authentication_classes = []
+    permission_classes = []
+    
     def get_queryset(self):
         try:
             q = self.request.query_params.get("q")
diff --git a/requirements.txt b/requirements.txt
index a512000..fcae17d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,11 +3,7 @@ attrs==26.1.0
 dj-database-url==3.1.2
 Django==6.0.5
 django-cors-headers==4.9.0
-django-filter==25.2
-django-redis==6.0.0
 djangorestframework==3.17.1
-djangorestframework_simplejwt==5.5.1
-drf-spectacular==0.29.0
 gunicorn==26.0.0
 inflection==0.5.1
 jsonschema==4.26.0