calendar

name	calendar
description	Calendar canvas for displaying events and picking meeting times. Use when showing calendar views or when users need to select available time slots.

Calendar Canvas

Display calendar views and enable interactive meeting time selection.

Example Prompts

Try asking:

• "Schedule a 30-minute meeting with Alice and Bob sometime next week"
• "Find a time when the engineering team is all free on Tuesday"
• "Show me my calendar for this week"
• "When is everyone available for a 1-hour planning session?"
• "Block off 2-4pm on Friday for focused work"

OpenCode Tools

High-Level (Recommended)

Pick a meeting time:

Use canvas_pick_meeting_time with:
  calendars: [
    {
      name: "Alice",
      events: [
        { id: "1", title: "Standup", start: "2025-01-06T09:00:00", end: "2025-01-06T09:30:00" }
      ]
    },
    {
      name: "Bob", 
      events: [
        { id: "2", title: "Call", start: "2025-01-06T14:00:00", end: "2025-01-06T15:00:00" }
      ]
    }
  ]
  durationMinutes: 30
  startHour: 9
  endHour: 17

Display calendar (read-only):

Use canvas_display_calendar with:
  events: [
    { id: "1", title: "Team Meeting", start: "2025-01-06T10:00:00", end: "2025-01-06T11:00:00" }
  ]

Low-Level (Full Control)

Use canvas_spawn with:
  kind: "calendar"
  scenario: "meeting-picker" or "display"
  config: { calendars: [...], durationMinutes: 30 }

Scenarios

display (default)

View-only calendar display. User can navigate weeks but cannot select times.

meeting-picker

Interactive scenario for selecting a free time slot when viewing multiple people's calendars.

• Shows multiple calendars overlaid with different colors
• User can click on free slots to select a meeting time
• Selection is returned via IPC
• Supports configurable time slot granularity (15/30/60 min)

Configuration

Display Config

interface CalendarConfig {
  events: CalendarEvent[];
}

interface CalendarEvent {
  id: string;
  title: string;
  start: string;      // ISO datetime
  end: string;        // ISO datetime
  calendar?: string;  // Calendar name
  location?: string;
  description?: string;
}

Meeting Picker Config

interface MeetingPickerConfig {
  calendars: NamedCalendar[];
  durationMinutes?: number;  // Default: 30
  startHour?: number;        // Default: 9
  endHour?: number;          // Default: 17
}

interface NamedCalendar {
  name: string;              // Person's name
  events: CalendarEvent[];   // Their busy times
}

Controls

Display scenario:

• Left/Right or h/l: Navigate between days
• n or PageDown: Next week
• p or PageUp: Previous week
• t: Jump to today
• q or Esc: Quit

Meeting picker scenario:

• Mouse click: Select a free time slot
• Left/Right: Navigate weeks
• t: Jump to today
• q or Esc: Cancel selection

Selection Result

interface MeetingPickerResult {
  startTime: string;  // ISO datetime
  endTime: string;    // ISO datetime
  duration: number;   // Minutes
}

Tool Response

The canvas_pick_meeting_time tool returns:

{
  success: true,
  data: {
    startTime: "2025-01-06T10:00:00",
    endTime: "2025-01-06T10:30:00",
    duration: 30
  }
}
// or
{
  success: true,
  cancelled: true  // User pressed Esc/q
}
// or
{
  success: false,
  error: "Canvas requires a tmux session"
}