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

Boyang is always added as attendee to every calendar event (automatic)
Timezone handling: Uses IANA identifiers (e.g., Asia/Singapore, Asia/Shanghai)
Time format: Always YYYY-MM-DD HH:MM:SS
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

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:

Go to Lark Open Platform
Add scopes: task:task:write, contact:contact:readonly (for dynamic employee lookup)
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.