Lark Calendar & Tasks

Lark Calendar & Task Skill

Create, update, and delete calendar events and tasks in Lark (Feishu).

Overview

This skill provides full CRUD operations for:

• -Calendar Events — meetings, appointments, schedules
• -Tasks (Todo) — action items with deadlines

Configuration

Required Environment Variables (in .secrets.env):

FEISHU_APP_ID=cli_a9f52a4ed7b8ded4
FEISHU_APP_SECRET=<your-app-secret>

Default Calendar: feishu.cn_caF80RJxgGcbBGsQx64bCh@group.calendar.feishu.cn (Claw calendar) Default Timezone: Asia/Singapore

Quick Reference

Create Calendar Event

node skills/lark-calendar/scripts/create-event.mjs \
  --title "Meeting with Team" \
  --description "Discuss Q2 roadmap" \
  --start "2026-02-03 14:00:00" \
  --end "2026-02-03 15:00:00" \
  --attendees "Boyang,RK" \
  --location "Meeting Room A"

Parameters:

| Param | Required | Description |

|-------|----------|-------------|

| --title | ✅ | Event title |

| --description | ❌ | Event description |

| --start | ✅ | Start time (YYYY-MM-DD HH:MM:SS) |

| --end | ✅ | End time (YYYY-MM-DD HH:MM:SS) |

| --attendees | ❌ | Comma-separated names (auto-resolved to user_ids) |

| --attendee-ids | ❌ | Comma-separated user_ids directly |

| --location | ❌ | Event location |

| --timezone | ❌ | Timezone (default: Asia/Singapore) |

| --calendar | ❌ | Calendar ID (uses default if omitted) |

Update Calendar Event

node skills/lark-calendar/scripts/update-event.mjs \
  --event-id "f9900f6b-b472-4b17-a818-7b5584abdc37_0" \
  --title "Updated Title" \
  --start "2026-02-03 15:00:00" \
  --end "2026-02-03 16:00:00"

Delete Calendar Event

node skills/lark-calendar/scripts/delete-event.mjs \
  --event-id "f9900f6b-b472-4b17-a818-7b5584abdc37_0"

List Calendar Events

List events for next 7 days
node skills/lark-calendar/scripts/list-events.mjs

List events in date range
node skills/lark-calendar/scripts/list-events.mjs \
  --start "2026-02-01" \
  --end "2026-02-28"

Create Task

node skills/lark-calendar/scripts/create-task.mjs \
  --title "Review PR #123" \
  --description "Code review for authentication module" \
  --due "2026-02-05 18:00:00" \
  --assignees "Boyang,jc"

Parameters:

| Param | Required | Description |

|-------|----------|-------------|

| --title | ✅ | Task title |

| --description | ❌ | Task description |

| --due | ✅ | Due date (YYYY-MM-DD HH:MM:SS) |

| --assignees | ❌ | Comma-separated names (auto-resolved) |

| --assignee-ids | ❌ | Comma-separated user_ids directly |

| --timezone | ❌ | Timezone (default: Asia/Singapore) |

Update Task

node skills/lark-calendar/scripts/update-task.mjs \
  --task-id "35fc5310-a1b1-49c7-be75-be631d3079ee" \
  --title "Updated Task" \
  --due "2026-02-06 18:00:00"

Delete Task

node skills/lark-calendar/scripts/delete-task.mjs \
  --task-id "35fc5310-a1b1-49c7-be75-be631d3079ee"

Manage Event Attendees

Add attendees
node skills/lark-calendar/scripts/manage-attendees.mjs \
  --event-id "xxx" --add "RK,jc"

Remove attendees  
node skills/lark-calendar/scripts/manage-attendees.mjs \
  --event-id "xxx" --remove "jc"

Manage Task Members

Add members
node skills/lark-calendar/scripts/manage-task-members.mjs \
  --task-id "xxx" --add "RK,jc"

Remove members
node skills/lark-calendar/scripts/manage-task-members.mjs \
  --task-id "xxx" --remove "jc"

Employee Directory

Names are auto-resolved to Lark user_ids. Supported names:

| user_id | Names | Role |

|---------|-------|------|

| dgg163e1 | Boyang, by, 博洋 | Boss |

| gb71g28b | RK | Leadership, R&D |

| 53gc5724 | Ding | Leadership, Operations |

| 217ec2c2 | Charline | HR |

| f2bfd283 | 曾晓玲, xiaoling | HR |

| f26fe45d | HH | Research |

| 45858f91 | zan, Eva | - |

| 7f79b6de | Issac | Operations |

| 1fb2547g | 王铁柱 | Operations |

| e5997acd | 尼克, Nico | Operations |

| 438c3c1f | Ivan | Operations |

| 17g8bab2 | Dodo | R&D, Product |

| 73b45ec5 | 启超, QiChaoShi | R&D, Design |

| d1978a39 | chenglin | R&D, Frontend |

| ef6fc4a7 | 冠林, Green | R&D, Frontend |

| b47fa8f2 | sixian, sx, Sixian-Yu | R&D, Frontend |

| 934fbf15 | jc, sagiri, 俊晨 | R&D, Backend |

| 8c4aad87 | 大明, daming | R&D, Backend |

| ab87g5e1 | Emily Yobal | Intern |

| 55fa337f | jingda, 景达 | Intern |

| 333c7cf1 | 刘纪源, 纪源, Aiden | Intern |

Business Rules

1. Boyang is always added as attendee to every calendar event (automatic)

2. Timezone handling: Uses IANA identifiers (e.g., Asia/Singapore, Asia/Shanghai)

3. Time format: Always YYYY-MM-DD HH:MM:SS

4. user_id vs open_id: This skill uses user_id format (e.g., dgg163e1), NOT open_id (e.g., ou_xxx)

Programmatic Usage

import { createEvent, updateEvent, deleteEvent } from './skills/lark-calendar/lib/calendar.mjs';
import { createTask, updateTask, deleteTask } from './skills/lark-calendar/lib/task.mjs';
import { resolveNames } from './skills/lark-calendar/lib/employees.mjs';

// Create event
const result = await createEvent({
  title: 'Team Sync',
  description: 'Weekly standup',
  startTime: '2026-02-03 10:00:00',
  endTime: '2026-02-03 10:30:00',
  attendeeIds: ['dgg163e1', 'gb71g28b'],
  location: 'Zoom',
  timezone: 'Asia/Singapore'
});

// Create task
const task = await createTask({
  title: 'Review document',
  description: 'Q2 planning doc',
  dueTime: '2026-02-05 18:00:00',
  assigneeIds: ['dgg163e1'],
  timezone: 'Asia/Singapore'
});

Lark API Reference

• -[Calendar Events API](https://open.larksuite.com/document/server-docs/calendar-v4/calendar-event/create)
• -[Calendar Attendees API](https://open.larksuite.com/document/server-docs/calendar-v4/calendar-event-attendee/create)
• -[Tasks API](https://open.larksuite.com/document/server-docs/task-v2/task/create)

Permissions Required

Ensure your Lark app has these scopes:

• -calendar:calendar — Read/write calendar ✅ (already enabled)
• -calendar:calendar:readonly — Read calendar ✅ (already enabled)
• -task:task:write — Write tasks ⚠️ (needs to be added for task creation)
• -task:task:read — Read tasks
• -contact:user.employee_id:readonly — Read user info ✅ (already enabled)

To add permissions:

1. Go to [Lark Open Platform](https://open.larksuite.com/app/cli_a9f52a4ed7b8ded4/auth)

2. Add scopes: task:task:write, contact:contact:readonly (for dynamic employee lookup)

3. Re-publish the app version

Note: Without contact:contact:readonly, the skill uses a static fallback employee list. Update lib/employees.mjs when team changes.