diff --git a/.ha_mcp/logs/mcp_usage.jsonl b/.ha_mcp/logs/mcp_usage.jsonl
index 58a8120..7902043 100644
--- a/.ha_mcp/logs/mcp_usage.jsonl
+++ b/.ha_mcp/logs/mcp_usage.jsonl
@@ -386,3 +386,5 @@
 {"timestamp": "2026-07-31T23:58:43.673302+00:00", "tool_name": "ha_get_device", "parameters": {"device_id": null, "entity_id": "switch.downstairs_bathroom_switch", "integration": null, "area_id": null, "manufacturer": null, "limit": 50, "offset": 0, "detail_level": "summary"}, "execution_time_ms": 126.13272666931152, "success": true, "error_message": null, "response_size_bytes": 1308, "user_context": null}
 {"timestamp": "2026-07-31T23:58:43.884477+00:00", "tool_name": "ha_get_device", "parameters": {"device_id": null, "entity_id": "light.bathroom_light", "integration": null, "area_id": null, "manufacturer": null, "limit": 50, "offset": 0, "detail_level": "summary"}, "execution_time_ms": 154.04033660888672, "success": true, "error_message": null, "response_size_bytes": 1223, "user_context": null}
 {"timestamp": "2026-07-31T23:58:53.477579+00:00", "tool_name": "ha_get_history", "parameters": {"entity_ids": ["binary_sensor.downstairs_bathroom_occupancy", "switch.downstairs_bathroom_switch"], "source": "history", "start_time": "6h", "end_time": null, "minimal_response": true, "significant_changes_only": true, "limit": null, "offset": null, "period": "day", "statistic_types": null, "order": "desc", "fields": null, "ctx": {"_STATE_TTL_SECONDS": 86400}}, "execution_time_ms": 22.153377532958984, "success": true, "error_message": null, "response_size_bytes": 4320, "user_context": null}
+{"timestamp": "2026-07-31T23:59:15.372224+00:00", "tool_name": "ha_get_state", "parameters": {"entity_id": "sensor.0xb40e060fffe7180a_linkquality", "fields": null, "attribute_keys": null}, "execution_time_ms": 4.430532455444336, "success": false, "error_message": "{\n  \"success\": false,\n  \"error\": {\n    \"code\": \"ENTITY_NOT_FOUND\",\n    \"message\": \"Entity 'sensor.0xb40e060fffe7180a_linkquality' not found\",\n    \"details\": \"API error: 404 - Entity not found.\",\n    \"suggestion\": \"Verify entity 'sensor.0xb40e060fffe7180a_linkquality' exists in Home Assistant\",\n    \"suggestions\": [\n      \"Verify entity 'sensor.0xb40e060fffe7180a_linkquality' exists in Home Assistant\",\n      \"Check Home Assistant connection\",\n      \"Use ha_search() to find correct entity IDs\"\n    ]\n  },\n  \"entity_id\": \"sensor.0xb40e060fffe7180a_linkquality\"\n}", "response_size_bytes": null, "user_context": null}
+{"timestamp": "2026-07-31T23:59:15.847712+00:00", "tool_name": "ha_get_state", "parameters": {"entity_id": "sensor.downstairs_bathroom_battery", "fields": null, "attribute_keys": null}, "execution_time_ms": 5.532264709472656, "success": true, "error_message": null, "response_size_bytes": 809, "user_context": null}