lark-cowork-plugin

A Claude Cowork plugin that gives Claude access to your Lark/Feishu workspace — calendar, messages, documents, sheets, bitable, tasks, email, and meeting minutes.

What it does

Once installed, Claude can:

Capability	What you can ask
Calendar	"What meetings do I have this week?", "Schedule a 1:1 with Alice tomorrow at 3pm", "Find a free slot for the team"
Messages	"What was discussed in the #engineering channel today?", "Send a message to Bob", "React to that last message with 👍"
Documents	"Summarise this Lark doc", "Find all docs about the Q4 plan", "Search the wiki for onboarding guides"
Sheets	"Read the data in this spreadsheet", "Write these results to column B", "Create a new sheet with these headers"
Bitable	"List all records in the Projects table", "What fields does the Tasks bitable have?"
Tasks	"What tasks am I assigned?", "Show me overdue tasks"
Email	"Search my inbox for emails from Alice", "Show me unread emails about the budget"
Minutes	"Get the transcript from yesterday's all-hands", "Summarise the meeting recording"

Requirements

This plugin requires the lark-cli tool to be installed and authenticated.

1. Install lark-cli

# From source
git clone https://github.com/seahyc/lark-cli
cd lark-cli && make install

2. Create a Lark app

1. Go to open.larksuite.com and create a custom app
2. Enable the permissions you need (see table below)
3. Add redirect URI: http://localhost:9999/callback
4. Enable "Refresh user_access_token" in Security Settings

<details> <summary>Full permissions list</summary>

Scope group	Permissions
calendar	calendar:calendar
contacts	contact:contact.base:readonly, contact:department.base:readonly
documents	docx:document:readonly, docs:document.content:read, wiki:wiki:readonly, space:document:retrieve
messages	im:message:readonly, im:message, im:message.reactions:read, im:message.reactions:write_only
mail	IMAP credentials (configured separately via lark mail setup)
bitable	bitable:app:readonly
tasks	task:task:read
minutes	minutes:media:read, minutes:transcript:read

</details>

3. Configure and authenticate

# Create config
cp config.example.yaml .lark/config.yaml
# Edit .lark/config.yaml with your App ID

# Set app secret
export LARK_APP_SECRET="your_app_secret"

# Login (opens browser)
lark auth login

Install the plugin

In Claude Cowork

/plugin install lark@seahyc

Or add this repo as a marketplace first:

/plugin marketplace add seahyc/lark-cowork-plugin
/plugin install lark

For local development

git clone https://github.com/seahyc/lark-cowork-plugin
claude --plugin-dir ./lark-cowork-plugin

Slash commands

Command	Description
/lark:lark-setup	Set up or troubleshoot lark-cli

Skills

Skills are auto-invoked when Claude detects a relevant request:

• lark:lark-calendar — Calendar management
• lark:lark-messages — Chat messages and reactions
• lark:lark-docs — Documents, Drive, and Wiki
• lark:lark-sheets — Spreadsheets
• lark:lark-bitable — Bitable databases
• lark:lark-tasks — Tasks
• lark:lark-email — Email via IMAP
• lark:lark-minutes — Meeting recordings and transcripts
• lark:lark-contacts — Company directory

Related

• seahyc/lark-cli — lark-cli