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
• Calendar Attendees API
• Tasks API

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
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.