Lark / Feishu — Usage Tips

Get the most out of your COCO AI employee on Lark (international) and Feishu (China).

Basic Usage

Direct Messages (DM)

Send any message directly to the bot. No @mention needed.

Group Chats

@mention the bot in any group conversation:

@YourBot please summarize the above discussion

Document Integration

Add your AI employee to any Lark document as a Document App:

1. Open a Lark document
2. Click ··· (top-right menu)
3. Select Add Document App (添加文档应用)
4. Search for your bot name
5. Confirm to add

Once added, @mention the bot inside the document to get AI assistance with the content.

Group Chat Best Practices

Smart Mode vs. Mention Mode

• Mention mode (recommended for most groups): Bot only responds when @mentioned
• Smart mode: Bot monitors all messages and proactively chimes in when relevant

Configure this in COCO Dashboard → Channel Settings → Lark.

Setting Standing Instructions

You can give your bot persistent instructions that apply to all responses in a group. Example:

"You are an assistant for our marketing team. Always respond in Chinese. Keep answers under 200 words."

Set this in COCO Dashboard → Bot Settings → System Prompt.

Thread Replies

The bot responds in threads to keep group chats organized. If you want a direct reply, the bot will still create a thread from your message.

Document App Features

When added to a Lark document, your AI employee can:

• Answer questions about document content: @mention + ask your question
• Generate content: @mention + "write a section about X"
• Summarize: @mention + "summarize this document"
• Translate: @mention + "translate this to English"

Tip: For documents with sensitive content, ensure the bot only has read access. Configure permissions in Lark Admin.

Feishu (飞书) Notes

Feishu and Lark share the same platform — the same COCO bot configuration works for both. If your organization uses Feishu internally and Lark externally, the bot handles both from a single connection.

Pro Tips

@mention in comments: You can @mention the bot in document comments for inline Q&A.

Group summary: At the end of a long group discussion, @mention the bot and say "summarize the discussion above" for a quick recap.

Multi-language: The bot auto-detects the language you write in and responds accordingly. Or specify: "reply in English."

Forward to DM: For sensitive questions, forward a group message to the bot's DM for a private response.

Troubleshooting

Bot not appearing in document app search?

• The bot must have been granted document app permissions in the Lark admin console
• Contact your Lark admin to enable external app access

Bot not responding in group?

• Confirm the bot was added to the group (not just the organization)
• Check that group mention mode is enabled in COCO Dashboard

Messages showing as "failed to send"?

• Check if the COCO service is online at coco.xyz/dashboard
• Verify your subscription is active