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.

Lark Calendar & Tasks

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Lark Calendar & Task Skill

Overview

Configuration

Quick Reference

Create Calendar Event

Update Calendar Event

Delete Calendar Event

List Calendar Events

List events in date range

Create Task

Update Task

Delete Task

Manage Event Attendees

Remove attendees

Manage Task Members

Remove members

Employee Directory

Business Rules

Programmatic Usage

Lark API Reference

Permissions Required

Quick Start

Manual Installation

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