OpenBird

Feishu (Lark) toolbox for AI Agents, providing 77 MCP tools via stdio and WebSocket event relay. Current stable version: 3.6.0. Release cadence: rolling releases via npm. Key differentiators: uses browser cookie authentication (no API token needed), runs locally, and offers two modes — MCP mode for AI client integration (Claude Desktop, Cursor) and Relay mode for webhook event forwarding. Supports 20+ event types, semantic deduplication, and exponential backoff retry. Requires Node.js >=20 and a Feishu browser cookie. Migration from v2 to v3 splits implicit webhook behavior into explicit commands.