CowAgent is an open-source personal AI assistant and agent harness with 47,400+ stars on GitHub that plans tasks, runs tools and skills, and keeps working for you around the clock across the chat apps you already use.
Evolved from the widely used chatgpt-on-wechat project, CowAgent is a super assistant you host yourself on a laptop or server. Give it a goal and it decomposes the task, then loops over tools — files, terminal, browser, scheduler, web search and native MCP integrations — until the job is done. A three-tier memory architecture (context, daily notes and core memory) with automatic distillation, plus a Markdown knowledge base that cross-references itself into a growing wiki, let it remember what matters and even self-improve: it reviews past conversations to refine its skills, follow up on unfinished tasks and consolidate knowledge. You can talk to it from the web UI or from WeChat, Feishu, DingTalk, WeCom, QQ, Telegram, Slack and Discord, plug in more than ten model providers — Claude, GPT, Gemini, DeepSeek, Qwen, GLM, Kimi and others — and compose multi-agent teams with delegated sub-agents. Install is a single line; the license is MIT.
CowAgent is free and open source under the MIT license, including its desktop app. You self-host it and pay only for whichever model providers you choose to connect.
Individuals and small teams who want a private, always-on personal agent that lives in their messaging apps, remembers context for months, and can grow from a single assistant into a small team of digital employees.