diff --git a/trustgraph-flow/trustgraph/query/ontology/monitoring.py b/trustgraph-flow/trustgraph/query/ontology/monitoring.py
index 703c6e95..4b0106fc 100644
--- a/trustgraph-flow/trustgraph/query/ontology/monitoring.py
+++ b/trustgraph-flow/trustgraph/query/ontology/monitoring.py
@@ -475,8 +475,11 @@ class PerformanceMonitor:
         cache_types = set()
         for metric_name in self.metrics_collector.counters.keys():
             if 'cache_type=' in metric_name:
-                cache_type = metric_name.split('cache_type=')[1].split(',')[0].split('}')[0]
-                cache_types.add(cache_type)
+                # Safely extract cache_type label value
+                parts = metric_name.split('cache_type=')
+                if len(parts) >= 2:
+                    cache_type = parts[1].split(',')[0].split('}')[0]
+                    cache_types.add(cache_type)
 
         for cache_type in cache_types:
             labels = {'cache_type': cache_type}
diff --git a/trustgraph-flow/trustgraph/query/ontology/sparql_generator.py b/trustgraph-flow/trustgraph/query/ontology/sparql_generator.py
index 44c7e0a1..7d25e3ca 100644
--- a/trustgraph-flow/trustgraph/query/ontology/sparql_generator.py
+++ b/trustgraph-flow/trustgraph/query/ontology/sparql_generator.py
@@ -203,10 +203,12 @@ ASK {{
             if response and isinstance(response, dict):
                 query = response.get('query', '').strip()
                 if query.upper().startswith(('SELECT', 'ASK', 'CONSTRUCT', 'DESCRIBE')):
+                    parts = query.split()
+                    query_type = parts[0].upper() if parts else 'UNKNOWN'
                     return SPARQLQuery(
                         query=query,
                         variables=self._extract_variables(query),
-                        query_type=query.split()[0].upper(),
+                        query_type=query_type,
                         explanation=response.get('explanation', 'Generated by LLM'),
                         complexity_score=self._calculate_complexity(query)
                     )