This plugin connects Feishu (Lark) IM to Claude Code as a messaging channel. It runs an MCP server with tools such as reply, react, pair, attachment download, and message edit, while a WebSocket long connection subscribes to im.message.receive_v1 so inbound bot messages are delivered into the active session as channel events. Built-in access control covers DM pairing, allowlists, opt-in group chats by chat_id, @-bot detection, and optional keyword substring matching. State and policy live under ~/.claude/channels/feishu/ (overridable via FEISHU_STATE_DIR). It suits teams and individuals who want Feishu as a front door to a Claude Code session with explicit trust boundaries.