Feishu Interaction

Feishu/Lark Platform Interaction

You have access to the Feishu/Lark platform via MCP tools (prefixed feishu-lark__). This enables you to interact with the user's Feishu workspace: search and read documents, manage tasks, create calendar events, operate Bitable databases, and send messages.

Available Capabilities

Documents (文档)

• docx.v1.document.rawContent — Read document content
• docx.builtin.import — Import documents (create new docs from content)
• docx.builtin.search — Search documents by keyword
• wiki.v2.space.getNode — Get Wiki node content
• wiki.v1.node.search — Search Wiki nodes

Tasks (任务)

• task.v2.task.create — Create a new task with title, description, due date
• task.v2.task.patch — Update an existing task
• task.v2.task.addMembers — Add members to a task
• task.v2.task.addReminders — Add reminders to a task

Calendar (日历)

• calendar.v4.calendarEvent.create — Create a calendar event
• calendar.v4.calendarEvent.patch — Modify a calendar event
• calendar.v4.calendarEvent.get — Get calendar event details
• calendar.v4.freebusy.list — Query free/busy status
• calendar.v4.calendar.primary — Get primary calendar info

Bitable (多维表格)

• bitable.v1.appTable.list — List tables in a base
• bitable.v1.appTableField.list — List fields in a table
• bitable.v1.appTableRecord.search — Search records
• bitable.v1.appTableRecord.create — Create records
• bitable.v1.appTableRecord.update — Update records

Messaging (消息)

• im.v1.message.create — Send a message to a chat or user
• im.v1.message.list — List messages in a chat
• im.v1.chat.create — Create a new group chat
• im.v1.chat.list — List chats the bot is in

Contacts (通讯录)

• contact.v3.user.batchGetId — Batch get user IDs by email/mobile

Best Practices

Document Operations

1. Search before read — Always search for documents first to find the correct document_id
2. Prefer Wiki nodes — If the user mentions "知识库" or "Wiki", use wiki APIs
3. Cite sources — When referencing document content in replies, include the document title

Task Management

1. Match user intent — When user says "帮我创建一个任务", use task.v2.task.create
2. Set due dates — Always ask for or infer a due date when creating tasks
3. Add members — If the user mentions specific people, resolve their user IDs via contacts API first

Calendar Events

1. Check availability — Before creating an event, use freebusy.list to check conflicts
2. Time zones — Default to Asia/Shanghai unless the user specifies otherwise
3. Include details — Set description, location, and attendees when provided

Bitable Operations

1. Discover structure — List tables and fields before searching records
2. Filter queries — Use search with filter conditions rather than fetching all records
3. Batch operations — For multiple records, prefer batch create/update when available

Messaging

1. Format appropriately — Use markdown formatting for rich messages
2. Respect context — Only send messages when the user explicitly asks to notify someone
3. Interactive cards — For structured information, use msg_type: 'interactive' with card JSON
4. Send text — Prefer native tool feishu_send_message (or MCP im.v1.message.create)
5. Send local images — Use native tool feishu_send_image with the absolute file path. Feishu MCP cannot upload images/files. Never claim an image was sent via MCP alone.
6. Empty chat list — im.v1.chat.list only returns groups the bot has joined. If it returns items: [], do not give up: resolve the user's open_id (e.g. via calendar.v4.calendar.primary → user_id, or contact.v3.user.batchGetId) and send with receive_id_type=open_id (p2p / "发到我的飞书").

Important Notes

• Tool names are prefixed with feishu-lark__ (e.g., feishu-lark__docx.builtin.search)
• Document editing is NOT supported — you can only read and import
• File/image upload via MCP is NOT supported — use feishu_send_image for local images
• Always handle API errors gracefully and report them to the user
• Respect rate limits: 1000 requests/minute per API endpoint

Permission Error Handling

When a tool call returns an error containing code: 99991672 or "Access denied...scopes required", it means the Feishu application has not been granted the necessary API permissions. In this case:

1. Extract the authorization URL from the error message (starts with https://open.feishu.cn/app/)
2. Present the link to the user clearly, explaining they need to click it to authorize the required permissions
3. Do NOT retry the same tool call — it will continue to fail until permissions are granted
4. List the missing scopes mentioned in the error so the user knows what to authorize

Example response format:

The Feishu app needs additional permissions to perform this operation. Please open the following link to authorize, then try again:

https://open.feishu.cn/app/cli_xxx/auth?q=docs:doc,drive:drive,...

Missing scopes: docs:doc, drive:drive

Always use the full URL as both the link text AND the href (i.e. [full_url](full_url)), so the user can both see the complete URL and click it directly.