Tool class

A tool available for the model to call.

Currently only supports function tools, but the structure allows for future expansion to other tool types.

Example

final tool = Tool.function(
  name: 'get_weather',
  description: 'Get the current weather for a location',
  parameters: {
    'type': 'object',
    'properties': {
      'location': {
        'type': 'string',
        'description': 'The city and state, e.g. San Francisco, CA',
      },
      'unit': {
        'type': 'string',
        'enum': ['celsius', 'fahrenheit'],
      },
    },
    'required': ['location'],
  },
);