tool.json

{
  "name": "extract_name",
  "title": "Extract name of the intended person",
  "description": "Extract the given (first) name of the intended person from the text. Call with the person's given name only, never the surname. If the text has no intended person, do not call the tool.",
  "parameters": {
    "type": "object",
    "properties": {
      "name": {
        "type": "string",
        "description": "The given (first) name of the intended person; never the surname."
      }
    },
    "required": ["name"]
  }
}