diff --git a/brian_polling_manager/inventory.py b/brian_polling_manager/inventory.py
index 1b6ceae885b7802bfb7229aa5b778e32fbd9d3bb..7fd483f541f9e54b8e8387500cf373e6c36fbaa6 100644
--- a/brian_polling_manager/inventory.py
+++ b/brian_polling_manager/inventory.py
@@ -6,7 +6,7 @@ import requests
 
 logger = logging.getLogger(__name__)
 
-# minimal inventory response schema
+# minimal inventory response schema for our purposes
 INVENTORY_VERSION_SCHEMA = {
     '$schema': 'http://json-schema.org/draft-07/schema#',
 
@@ -29,50 +29,23 @@ INVENTORY_VERSION_SCHEMA = {
     'additionalProperties': True
 }
 
+# minimal inventory response schema for our purposes
 INVENTORY_INTERFACES_SCHEMA = {
     '$schema': 'http://json-schema.org/draft-07/schema#',
 
     'definitions': {
-        'service': {
-            'type': 'object',
-            'properties': {
-                'id': {'type': 'integer'},
-                'name': {'type': 'string'},
-                'type': {'type': 'string'},
-                'status': {'type': 'string'},
-            },
-            'required': ['id', 'name', 'type', 'status'],
-            'additionalProperties': False
-        },
         'interface': {
             'type': 'object',
             'properties': {
                 'router': {'type': 'string'},
                 'name': {'type': 'string'},
-                'description': {'type': 'string'},
                 'snmp-index': {
                     'type': 'integer',
                     'minimum': 1
-                },
-                'bundle': {
-                    'type': 'array',
-                    'items': {'type': 'string'}
-                },
-                'bundle-parents': {
-                    'type': 'array',
-                    'items': {'type': 'string'}
-                },
-                'circuits': {
-                    'type': 'array',
-                    'items': {'$ref': '#/definitions/service'}
                 }
             },
-            'required': [
-                'router', 'name', 'description',
-                'snmp-index', 'bundle', 'bundle-parents',
-                'circuits'],
-            'additionalProperties': False
-        },
+            'required': ['router', 'name', 'snmp-index'],
+        }
     },
 
     'type': 'array',
@@ -80,33 +53,11 @@ INVENTORY_INTERFACES_SCHEMA = {
 }
 
 
+# minimal inventory response schema for our purposes
 GWS_DIRECT_SCHEMA = {
     '$schema': 'http://json-schema.org/draft-07/schema#',
 
     'definitions': {
-        'oid': {
-            'type': 'string',
-            'pattern': r'^(\d+\.)*\d+$'
-        },
-        'counter': {
-            'type': 'object',
-            'properties': {
-                'field': {
-                    'enum': [
-                        'discards_in',
-                        'discards_out',
-                        'errors_in',
-                        'errors_out',
-                        'traffic_in',
-                        'traffic_out'
-                    ]
-                },
-                'oid': {'$ref': '#/definitions/oid'},
-                'community': {'type': 'string'}
-            },
-            'required': ['field', 'oid', 'community'],
-            'additionalProperties': False
-        },
         'interface-counters': {
             'type': 'object',
             'properties': {
@@ -117,15 +68,8 @@ GWS_DIRECT_SCHEMA = {
                 },
                 'hostname': {'type': 'string'},
                 'tag': {'type': 'string'},
-                'counters': {
-                    'type': 'array',
-                    'items': {'$ref': '#/definitions/counter'},
-                    'minItems': 1
-                }
             },
-            'required': [
-                'nren', 'isp', 'hostname', 'tag', 'counters'],
-            'additionalProperties': False
+            'required': ['nren', 'isp', 'hostname', 'tag']
         }
     },