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):

bash

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#

bash

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:

ParamRequiredDescription--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#

bash

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#

bash

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

List Calendar Events#

bash

# 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#

bash

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:

ParamRequiredDescription--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#

bash

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#

bash

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

Manage Event Attendees#

bash

# 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#

bash

# 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_idNamesRoledgg163e1Boyang, by, 博洋Bossgb71g28bRKLeadership, R&D53gc5724DingLeadership, Operations217ec2c2CharlineHRf2bfd283曾晓玲, xiaolingHRf26fe45dHHResearch45858f91zan, Eva-7f79b6deIssacOperations1fb2547g王铁柱Operationse5997acd尼克, NicoOperations438c3c1fIvanOperations17g8bab2DodoR&D, Product73b45ec5启超, QiChaoShiR&D, Designd1978a39chenglinR&D, Frontendef6fc4a7冠林, GreenR&D, Frontendb47fa8f2sixian, sx, Sixian-YuR&D, Frontend934fbf15jc, sagiri, 俊晨R&D, Backend8c4aad87大明, damingR&D, Backendab87g5e1Emily YobalIntern55fa337fjingda, 景达Intern333c7cf1刘纪源, 纪源, AidenIntern

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#

javascript

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.