Browser Use 联合创始人:Agent 框架的苦涩教训
Browser Use 联合创始人兼 CTO 撰文称,agent 本质上只是一个消息 for-loop,99% 的工作在模型内部完成,框架里的抽象反而会限制模型能力。他复盘团队如何推翻初版框架,重写为极简的 BU Agent,让模型直接发出 Chrome DevTools Protocol 指令并调用浏览器扩展 API,先给最大能力再按评测收紧限制。文中还介绍了用于控制浏览器状态膨胀的 ephemeral messages、用 done 工具显式终止 agent 的做法,并宣布将这套方案以 agent-sdk 开源。

very other LLM framework Seriously. The way they implement LLM objects is painful. So I wrote my own. Super easy way to do calling. That's all they do - for Anthropic, OpenAI, and Google. Based on our telemetry, these account for 95% of use cases. Same interface. Full control over caching, serialization, provider quirks. No magic. No surprises. It's so much easier to do caching and implement messages yourself. Completely model-agnostic. You're not locked into one provider. You just decide. Ephem
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