json
{
      name: 'Test Assistant',
      model: {
        provider: 'openai',
        model: 'gpt-4',
        messages: [],
        tools: [
          {
            type: GOOGLE_CALENDAR_CHECK_AVAILABILITY_TOOL,
            function: {
              name: GOOGLE_CALENDAR_CHECK_AVAILABILITY_TOOL,
              description: 'Calendar availability check function',
              parameters: {
                type: 'object',
                properties: {
                  startDateTime: {
                    type: 'string',
                    description: customStartDateTimeDesc,
                  },
                  endDateTime: {
                    type: 'string',
                    description: 'End date time',
                  },
                  customParam: {
                    type: 'string',
                    description: 'Custom parameter that should be ignored',
                  },
                },
                required: ['startDateTime', 'endDateTime', 'customParam'],
              },
            },
            metadata: {
              calendarId: 'primary',
              timeZone: 'UTC',
            },
          },
        ],
      },
    }