const tools = [
  {
    type: "function",
    definition: {
      schema: {
        name: "get_weather",
        description: "Get the current weather for a location",
        parameters: {
          type: "object",
          properties: {
            location: {
              type: "string",
              description: "City name, e.g. San Francisco",
            },
            unit: {
              type: "string",
              enum: ["celsius", "fahrenheit"],
              description: "Temperature unit",
            },
          },
          required: ["location"],
        },
      },
    },
    handler: async (args) => {
      // Your function logic here
      return { temperature: 72, condition: "sunny" };
    },
  },
];