---

name: calendar-scheduling description: Calendar event formatting, conflict detection, meeting optimization, and smart scheduling. Use when creating calendar events, finding meeting times, or managing schedules.

Calendar Scheduling

Tools for calendar event management, conflict detection, and intelligent scheduling.

Quick Start

Format calendar event:

Copypython scripts/format_event.py --title "Team Meeting" --start "2026-01-20 14:00" --duration "1h" --output event.json

Detect conflicts:

Copypython scripts/detect_conflicts.py --events existing_events.json --new-event new_event.json

Find free time:

Copypython scripts/find_free_time.py --calendars user1.json user2.json --duration "1h" --business-hours

Event Formatting

Standard Event Structure

Google Calendar format:

Copy{
  "summary": "Team Meeting",
  "description": "Weekly team sync",
  "start": {
    "dateTime": "2026-01-20T14:00:00-08:00",
    "timeZone": "America/Los_Angeles"
  },
  "end": {
    "dateTime": "2026-01-20T15:00:00-08:00",
    "timeZone": "America/Los_Angeles"
  },
  "attendees": [
    {"email": "user1@example.com"},
    {"email": "user2@example.com"}
  ],
  "location": "Conference Room A",
  "reminders": {
    "useDefault": false,
    "overrides": [
      {"method": "popup", "minutes": 15}
    ]
  }
}

Event Types

1. Meeting

Copy{
  "summary": "Product Review Meeting",
  "duration": "1h",
  "attendees": ["team@example.com"],
  "location": "Zoom",
  "reminders": [15]
}

2. All-Day Event

Copy{
  "summary": "Company Holiday",
  "start": {"date": "2026-01-20"},
  "end": {"date": "2026-01-21"}
}

3. Recurring Event

Copy{
  "summary": "Weekly Standup",
  "recurrence": ["RRULE:FREQ=WEEKLY;BYDAY=MO,WE,FR"],
  "start": "2026-01-20T09:00:00",
  "duration": "15m"
}

4. Focus Time

Copy{
  "summary": "Focus: Deep Work",
  "transparency": "opaque",
  "visibility": "private",
  "duration": "2h"
}

Conflict Detection

Detection Algorithm

Copydef detect_conflicts(existing_events: list, new_event: dict) -> list:
    """
    Detect scheduling conflicts.

    Returns list of conflicting events.
    """
    conflicts = []
    new_start = parse_datetime(new_event['start'])
    new_end = parse_datetime(new_event['end'])

    for event in existing_events:
        event_start = parse_datetime(event['start'])
        event_end = parse_datetime(event['end'])

        # Check for overlap
        if (new_start < event_end and new_end > event_start):
            conflicts.append(event)

    return conflicts

Conflict Types

Hard Conflicts:

• Overlapping meetings
• Double-booked time slots
• Events during blocked time

Soft Conflicts:

• Back-to-back meetings (no buffer)
• Meetings during preferred focus time
• Too many meetings in one day
• Meetings outside business hours

Buffer Time

Add buffer between meetings:

CopyBUFFER_MINUTES = 15

def has_buffer(event1, event2, buffer_minutes=15):
    """Check if events have sufficient buffer."""
    gap = event2_start - event1_end
    return gap.total_seconds() >= (buffer_minutes * 60)

Smart Scheduling

Find Free Time

Algorithm to find available time slots:

Copydef find_free_time(
    calendars: list,
    duration_minutes: int,
    start_date: datetime,
    end_date: datetime,
    business_hours_only: bool = True
) -> list:
    """
    Find available time slots across multiple calendars.

    Returns list of (start, end) tuples.
    """
    # 1. Collect all busy times
    busy_times = []
    for calendar in calendars:
        busy_times.extend(get_busy_times(calendar))

    # 2. Sort busy times
    busy_times.sort(key=lambda x: x[0])

    # 3. Find gaps
    free_slots = []
    current_time = start_date

    for busy_start, busy_end in busy_times:
        # Check gap before this busy time
        if (busy_start - current_time).total_seconds() >= duration_minutes * 60:
            # Filter by business hours
            if business_hours_only:
                slot = filter_business_hours(current_time, busy_start)
                if slot:
                    free_slots.append(slot)
            else:
                free_slots.append((current_time, busy_start))

        current_time = max(current_time, busy_end)

    return free_slots

Business Hours

Default business hours:

CopyBUSINESS_HOURS = {
    'monday': {'start': '09:00', 'end': '17:00'},
    'tuesday': {'start': '09:00', 'end': '17:00'},
    'wednesday': {'start': '09:00', 'end': '17:00'},
    'thursday': {'start': '09:00', 'end': '17:00'},
    'friday': {'start': '09:00', 'end': '17:00'},
    'saturday': None,  # Not a business day
    'sunday': None     # Not a business day
}

Meeting Optimization

Optimal meeting times:

1. Mid-morning (10:00-11:30): Good for focused discussions
2. Early afternoon (13:00-14:30): Good for collaborative work
3. Avoid:
   • Early morning (before 9:00)
   • Lunch time (12:00-13:00)
   • Late afternoon (after 16:00)
   • End of week (Friday afternoon)

Meeting length guidelines:

• Quick sync: 15 minutes
• Standard meeting: 30 minutes
• Deep dive: 60 minutes
• Workshop: 90-120 minutes
• All-hands: 30-45 minutes

Reminder Scheduling

Reminder Types

Time-based:

• 15 minutes before (default)
• 1 hour before
• 1 day before
• 1 week before (for important events)

Context-based:

• When leaving for meeting (travel time)
• When prep needed (read docs)
• When action required (submit materials)

Smart Reminders

Copydef calculate_reminder_time(event: dict) -> int:
    """
    Calculate optimal reminder time based on event type.

    Returns minutes before event.
    """
    event_type = event.get('type', 'meeting')
    duration = event.get('duration_minutes', 30)

    if event_type == 'interview':
        return 60  # 1 hour before
    elif event_type == 'presentation':
        return 120  # 2 hours before (prep time)
    elif event_type == 'external_meeting':
        return 30  # 30 minutes before
    elif duration >= 60:
        return 30  # Long meetings: 30 min before
    else:
        return 15  # Short meetings: 15 min before

Scripts

format_event.py

Format a calendar event.

Usage:

Copypython scripts/format_event.py \
    --title "Team Meeting" \
    --start "2026-01-20 14:00" \
    --duration "1h" \
    --attendees "user1@example.com,user2@example.com" \
    --location "Conference Room A" \
    --reminder 15 \
    --output event.json

Arguments:

• --title: Event title (required)
• --start: Start date/time (YYYY-MM-DD HH:MM)
• --duration: Duration (e.g., "1h", "30m")
• --attendees: Comma-separated email addresses
• --location: Meeting location or video link
• --reminder: Reminder minutes before event
• --output: Output JSON file

detect_conflicts.py

Detect scheduling conflicts.

Usage:

Copypython scripts/detect_conflicts.py \
    --events existing_events.json \
    --new-event new_event.json \
    --buffer 15

Arguments:

• --events: JSON file with existing events
• --new-event: JSON file with new event to check
• --buffer: Required buffer minutes between events

Output:

Copy{
  "has_conflicts": true,
  "hard_conflicts": [
    {
      "event": "Existing Meeting",
      "start": "2026-01-20T14:00:00",
      "end": "2026-01-20T15:00:00",
      "reason": "Overlapping time slot"
    }
  ],
  "soft_conflicts": [
    {
      "event": "Previous Meeting",
      "reason": "No buffer time (back-to-back)"
    }
  ]
}

find_free_time.py

Find available time slots.

Usage:

Copypython scripts/find_free_time.py \
    --calendars user1.json user2.json \
    --duration "1h" \
    --start "2026-01-20" \
    --end "2026-01-27" \
    --business-hours \
    --timezone "America/Los_Angeles"

Arguments:

• --calendars: JSON files with calendar events
• --duration: Required duration (e.g., "1h", "30m")
• --start: Start date to search from
• --end: End date to search until
• --business-hours: Only suggest business hours
• --timezone: Timezone for results

Output:

Copy{
  "suggested_times": [
    {
      "start": "2026-01-20T10:00:00-08:00",
      "end": "2026-01-20T11:00:00-08:00",
      "score": 95,
      "reason": "Optimal time (mid-morning)"
    },
    {
      "start": "2026-01-20T14:00:00-08:00",
      "end": "2026-01-20T15:00:00-08:00",
      "score": 85,
      "reason": "Good time (early afternoon)"
    }
  ]
}

Scheduling Rules

See rules/scheduling_rules.md for detailed scheduling guidelines:

General Rules

1. Meeting Length

• Default to 25 or 50 minutes (not 30 or 60)
• Allows 5-10 minute buffer
• Prevents back-to-back fatigue

2. Meeting Frequency

• Max 4 hours of meetings per day
• Max 2 hours consecutive meetings
• One meeting-free day per week

3. Meeting Timing

• Schedule important meetings mid-morning
• Avoid Monday morning and Friday afternoon
• Respect timezones (for distributed teams)

4. Attendees

• Invite only necessary attendees
• Max 8 people for productive discussions
• Provide agenda in advance

Focus Time

Block focus time:

• Morning: 9:00-11:00 (deep work)
• Afternoon: 14:00-16:00 (focused tasks)

Protection:

• Mark as "busy" in calendar
• Decline meeting requests during focus time
• Schedule at least 2 hours per day

Time Zones

CopyCOMMON_TIMEZONES = {
    'PT': 'America/Los_Angeles',
    'ET': 'America/New_York',
    'UTC': 'UTC',
    'GMT': 'Europe/London',
    'CET': 'Europe/Paris',
    'IST': 'Asia/Kolkata',
    'JST': 'Asia/Tokyo'
}

def find_overlap_hours(timezone1, timezone2):
    """Find overlapping business hours between timezones."""

Integration with Agents

Scheduling Agent

Copyfrom calendar_scheduling import find_free_time, format_event

# Find available time
free_slots = find_free_time(
    calendars=[user1_calendar, user2_calendar],
    duration_minutes=60,
    business_hours_only=True
)

# Format event
event = format_event(
    title="Team Sync",
    start=free_slots[0]['start'],
    duration="1h",
    attendees=['user1@example.com', 'user2@example.com']
)

# Create in Google Calendar
calendar_client.create_event(event)

Communication Agent

Copyfrom calendar_scheduling import detect_conflicts

# Check for conflicts before accepting invite
conflicts = detect_conflicts(existing_events, new_invite)

if conflicts['has_conflicts']:
    # Send message suggesting alternative time
    message = f"I have a conflict at that time. Alternative times: {suggest_alternatives()}"
    slack_client.send_message(message)

Best Practices

Event Creation

• Clear, descriptive titles
• Include agenda in description
• Add video link for remote meetings
• Set appropriate reminders
• Invite only necessary attendees

Conflict Management

• Check for conflicts before accepting
• Suggest alternative times
• Respect focus time blocks
• Decline unnecessary meetings

Meeting Hygiene

• Start and end on time
• Provide agenda in advance
• Take and share notes
• Follow up with action items
• Cancel if unnecessary

Calendar Maintenance

• Block focus time weekly
• Review and optimize calendar monthly
• Clean up old/canceled events
• Keep time zones updated
• Maintain consistent meeting patterns

Examples

• examples/weekly_sync_event.json - Weekly team meeting
• examples/one_on_one_event.json - 1:1 meeting format
• examples/all_hands_event.json - Company all-hands