AionUi is a feature-rich, open-source multi-agent Cowork desktop app whose core value is unifying a built-in agent, external CLI agents, MCP tool configuration, and Team collaboration — not offering a fixed MCP toolset — so its broad file and execution permissions warrant careful review before use.
AionUi, built by iOfficeAI, is a free, open-source, local-first Cowork desktop application for macOS, Windows, and Linux. Users work alongside a built-in AI agent or auto-detected, separately installed CLI agents (Claude Code, Codex, Gemini CLI, OpenClaw, Hermes Agent, and others). It offers unified MCP (Model Context Protocol) tool configuration that syncs across all connected agents, and in Team Mode it ships a built-in Team MCP Server through which a Leader agent delegates subtasks to parallel Teammate agents. AionUi is best understood as a multi-agent orchestration client/host rather than a single-purpose MCP tool server — the repository does not publish a cached MCP tool manifest or a client config JSON example. It also supports scheduled cron automation, remote access via WebUI and chat platforms (Telegram, Lark, DingTalk, WeChat), and document-generation skills (PPTX, DOCX, XLSX).
Download the installer for your platform (macOS/Windows/Linux) from the GitHub Releases page, or run brew install aionui on macOS. After installing, enter any supported LLM provider's API key to start using the built-in agent. To connect external CLI agents or MCP tools, configure them in-app under MCP Tool Configuration (the README does not include a JSON config snippet — see the project wiki's MCP Configuration Guide for details).