What problem does it solve? It lets an AI agent operate Feishu/Lark instant messaging end to end — sending and replying to messages, searching chat history, managing group chats and members, downloading message attachments, and handling interactive card callbacks — without manually calling the Lark OpenAPI. ## Core Features & Use Cases - Messaging: Send, reply, forward, recall, and search messages across chats and threads, with automatic sender-name resolution, reaction enrichment, and optional resource download (including chunked large-file downloads). - Chat Management: Create group or topic chats, list and search chats, manage members, managers, moderation, nicknames, pins, bookmarks (flags), feed shortcuts, and feed groups (tags). - Interactive Cards: Send interactive cards and consume card.action.trigger callback events to update cards in place based on user interactions. - Use Case: A user asks the agent to find the "release team" group, read the last 50 messages, download any attached files, and post a summary card with buttons that update when clicked. ## Quick Start Ask the agent to send a message to a Feishu group by name, for example: "Send 'standup starts in 5 minutes' to the Daily Sync group on Feishu."