Side-by-side comparison of two Model Context Protocol servers — install paths, tools, quality signals, and directory engagement so you can pick the right one for Claude, Cursor, and other MCP clients.
Physical mail API for AI agents. Send letters, certified mail, postcards, and batch mailings with cost previews, approval controls, tracking, and webhooks.
All-in-one Feishu/Lark MCP server (84 tools). Send messages as the actual user (not bot), plus full official-API coverage of docs, bitable, wiki, drive, calendar, tasks, OKR. Cookie + OAuth UAT + app-credential auth.