zhayujie/CowAgent at 44.8K Stars Ships v2.0.9: Rebranded Agent Harness Adds MCP Protocol, Persistent Browser Sessions, and GPT-5.5/Gemini-3.5-Flash Support

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CowAgent (formerly chatgpt-on-wechat) released v2.0.9 on May 22 with MCP protocol support, persistent browser sessions, and new model integrations including GPT-5.5, Gemini-3.5-Flash, and Qwen3.7-Max. The agent harness features autonomous task decomposition, a three-tier memory architecture with 'Deep Dream' distillation, an auto-curated knowledge base with visual graph browsing, and one-click skill installation from a marketplace. Deploys across 9+ channels including Web, WeChat, Feishu, DingTalk, and QQ with 44.8K stars.