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Browser Use CLI 3.0

发布日志
July 1, 2026(260701)

Browser Use CLI 3.0 gives coding agents a browser and the ability to execute Python within it.

Browser Use CLI 3.0 给编程 agent 一个浏览器,以及在其中执行 Python 的能力。

Browser Use CLI 3.0 lets agents work online with our highest accuracy yet. It is powered by Browser Harness, providing agents with a small, editable Python harness instead of a fixed menu of browser actions.

CLI 3.0 让 agent 以我们迄今最高的准确率上网干活。它由 Browser Harness 驱动——给 agent 的是一个小巧、可编辑的 Python harness,而不是一份固定的浏览器动作菜单。

This release applies what we learned in The Bitter Lesson of Agent Harnesses and The Bitter Lesson of Agent Frameworks: the latest models do best when you give them freedom, rather than abstracting away complexity.

这次发布,落实的是我们在《Agent Harnesses 的苦涩教训》与《Agent Frameworks 的苦涩教训》两文中学到的东西:对最新的模型,给它自由,胜过替它抽象掉复杂性。

解读 · 全文的钥匙句就是上面这句——你已读完它引用的两篇文章加前传和 Sutton 原点,此刻读这份日志,每个词都有出处:"editable harness" 指向自愈循环,"fixed menu" 指向 MCP 式菜单批判,"freedom" 指向 Sutton 的通用方法论。

Install / 安装与接入

Install the CLI:

安装(两行命令):

uv tool install browser-use
browser-use

Set Up Your Agent — paste this prompt into Claude Code, Codex, or another coding agent:

配置你的 agent——把下面这段提示词粘给 Claude Code、Codex 或任何编程 agent:

Install or upgrade browser-use to the latest stable version with uv
using Python 3.12, register the skill from `browser-use skill`, and
connect it to my browser. Follow
https://github.com/browser-use/browser-use if setup or connection fails.

Then, ask your agent to use Browser Use for work that needs the live web or a browser.

然后,凡是需要真实网络或浏览器的活,直接吩咐你的 agent 用 Browser Use 去干。

What Changed / 变了什么

The old CLI provided agents with a set list of actions to execute in the browser (ex: click, type, etc.).

旧版 CLI 给 agent 的是一份固定动作清单(点击、输入之类)。

CLI 3.0 allows agents to execute Python freely within the browser, so agents can do more actions and can inspect, adapt, and recover using the same coding loop they already use and were trained to be good at.

CLI 3.0 允许 agent 在浏览器里自由执行 Python——能做的动作更多,而且可以用它们早已惯用、且被训练得极其擅长的那个编码循环去检查、适应、恢复。

族谱闭环 · "the same coding loop they were trained to be good at"——就是你笔记里那篇《写代码→跑→看结果→改》。至此五份文献连成一条完整弧线:替 agent 藏复杂性(前传 250820)→ 通用方法必胜论(Sutton 2019)→ 别包模型(Frameworks 260116)→ 连工具也别包(Harnesses 260419)→ 产品落地(本篇 260701)→ 装进你的机器(260721)。