A tool description that under-triggers

A support agent has a search tool over the internal knowledge base, but it answers from memory far too often and only searches when a user explicitly says 'search'. Improve the definition.

{
  "name": "search_kb",
  "description": "▁▁▁ 1 ▁▁▁",
  "input_schema": {
    "type": "object",
    "properties": {
      "query": {"type": "string", "description": "What to look for"},
      "product_area": {
        "type": "string",
        "▁▁▁ 2 ▁▁▁": ["billing", "auth", "api", "mobile"]
      }
    },
    "required": ["query"]
  }
}