browser use完整梳理

brower use完整邏輯梳理

browser use的完整一次運行過程

INFO [service] Using anonymized telemetry, see https://docs.browser-use.com/development/telemetry.
WARNING [Agent] ?? DeepSeek models do not support use_vision=True yet. Setting use_vision=False for now…
INFO [Agent] 🚀 Task: What should we pay attention to in the recent new rules on tariffs in China-US trade?
INFO [Agent] 🧠 Starting a browser-use version 0.7.3 with model=deepseek-chat
INFO [Agent]

INFO [Agent] 📍 Step 1:
INFO [Agent] ? Eval: No previous actions taken - starting fresh research task.
INFO [Agent] 🎯 Next goal: Search Google for recent China-US tariff rules and new regulations
INFO [Agent] 🦾 [ACTION 1/1] search_google: query: China US tariff new rules 2024 2025 recent changes
ERROR [cdp_use.client] CDP Error for request 30: {‘code’: -32000, ‘message’: ‘Not attached to an active page’}
INFO [tools] 🔍 Searched Google for ‘China US tariff new rules 2024 2025 recent changes’
INFO [Agent]

INFO [Agent] 📍 Step 2:
INFO [Agent] 👍 Eval: Successfully initiated Google search for recent China-US tariff rules and regulations, but page appears to still be loading or empty.
INFO [Agent] 🎯 Next goal: Wait for the Google search results page to load completely so I can see the search results and begin examining sources.
INFO [Agent] 🦾 [ACTION 1/1] wait: seconds: 5
INFO [tools] 🕒 waited for 2 seconds + 3 seconds for LLM call
INFO [Agent]

INFO [Agent] 📍 Step 3:
INFO [Agent] 👍 Eval: Successfully waited for Google search results to load, and now I can see multiple relevant and recent sources about China-US tariff developments.
INFO [Agent] 🎯 Next goal: Create a todo.md file to organize my research plan and then examine the most recent source from Trade Compliance Resource Hub about the tariff suspension.
INFO [Agent] 🦾 [ACTION 1/2] write_file: file_name: todo.md, content: # China-US Tariff Rules Research\n\n## Goal: Identify key points to pay attention to in
INFO [tools] 💾 Data written to file todo.md successfully.
INFO [Agent] 🦾 [ACTION 2/2] click_element_by_index: index: 68, while_holding_ctrl: True
INFO [tools] 🖱? Clicked element with index 68 and opened in new tab
INFO [Agent]

INFO [Agent] 📍 Step 4:
INFO [Agent] 👍 Eval: Successfully clicked on the Trade Compliance Resource Hub link which opened in a new tab, ready to examine the most recent source about China’s tariff suspension.
INFO [Agent] 🎯 Next goal: Switch to the new tab containing the Trade Compliance Resource Hub article to examine the recent China tariff suspension details.
INFO [Agent] 🦾 [ACTION 1/1] switch_tab: tab_id: F5CB
INFO [tools] 🔄 Switched to Tab with ID F5CB
INFO [Agent]

INFO [Agent] 📍 Step 5:
INFO [Agent] 👍 Eval: Successfully switched to the tab containing the Google search results, but I’m still on the search page rather than the actual Trade Compliance Resource Hub article that I need to examine.
INFO [Agent] 🎯 Next goal: Click on the Trade Compliance Resource Hub link (index 68) to visit the actual article and begin extracting information about recent tariff suspension details.
INFO [Agent] 🦾 [ACTION 1/1] click_element_by_index: index: 68, while_holding_ctrl: False
INFO [tools] 🖱? Clicked element with index 68
INFO [Agent]

INFO [Agent] 📍 Step 6:
INFO [Agent] 👍 Eval: Failed to successfully navigate to the Trade Compliance Resource Hub article - I’m still on the Google search results page instead of the target article.
INFO [Agent] 🎯 Next goal: Click on the Trade Compliance Resource Hub link (index 68) again to access the detailed article about China’s tariff suspension.
INFO [Agent] 🦾 [ACTION 1/1] click_element_by_index: index: 68, while_holding_ctrl: True
INFO [tools] 🖱? Clicked element with index 68 and opened in new tab
INFO [Agent]

INFO [Agent] 📍 Step 7:
INFO [Agent] 👍 Eval: Failed to successfully navigate to the Trade Compliance Resource Hub article - I’m still on Google search results instead of the target content.
INFO [Agent] 🎯 Next goal: Click on the Trade Compliance Resource Hub link (index 68) to access the detailed article about China’s tariff suspension.
INFO [Agent] 🦾 [ACTION 1/1] click_element_by_index: index: 68, while_holding_ctrl: False
INFO [tools] 🖱? Clicked element with index 68
INFO [Agent]

INFO [Agent] 📍 Step 8:
INFO [Agent] 👍 Eval: Failed to successfully navigate to the Trade Compliance Resource Hub article - I’m still on Google search results instead of the target content.
INFO [Agent] 🎯 Next goal: Click on the Trade Compliance Resource Hub link (index 68) to access the detailed article about China’s tariff suspension.
INFO [Agent] 🦾 [ACTION 1/1] click_element_by_index: index: 68, while_holding_ctrl: True
INFO [tools] 🖱? Clicked element with index 68 and opened in new tab
INFO [Agent]

INFO [Agent] 📍 Step 9:
INFO [Agent] 👍 Eval: Failed to successfully navigate to the Trade Compliance Resource Hub article despite multiple attempts - I’m still on Google search results instead of the target content.
INFO [Agent] 🎯 Next goal: Click on the BBC article link (index 70) to access detailed information about Trump’s tariff announcements and rationale.
INFO [Agent] 🦾 [ACTION 1/1] click_element_by_index: index: 70, while_holding_ctrl: True
INFO [BrowserSession] 🔗 New tab opened - switching to it
INFO [tools] 🖱? Clicked element with index 70 and opened in new tab
INFO [Agent]

INFO [Agent] 📍 Step 10:
INFO [Agent] 👍 Eval: Failed to successfully navigate to the Trade Compliance Resource Hub article despite multiple attempts - experiencing technical difficulties with link navigation.
INFO [Agent] 🎯 Next goal: Switch to the BBC article tab (5A6D) to examine detailed information about Trump’s tariff announcements and rationale.
INFO [Agent] 🦾 [ACTION 1/1] switch_tab: tab_id: 5A6D
INFO [tools] 🔄 Switched to Tab with ID 5A6D
WARNING [bubus] ================================================================================
WARNING [bubus] ?? TIMEOUT ERROR - Handling took more than 8.0s for EventBus_9250e8a6.browser_use.browser.watchdog_base.ScreenshotWatchdog.on_ScreenshotEvent(?? ScreenshotEvent#0b98 ?)
WARNING [bubus] ================================================================================
WARNING [bubus] 📣 BrowserStateRequestEvent#0891 10s
WARNING [bubus] ?? browser_use.browser.watchdog_base.DOMWatchdog.on_BrowserStateRequestEvent(#0891) ? 10s/30s
WARNING [bubus] 📣 ScreenshotEvent#0b98 8s
WARNING [bubus] ? browser_use.browser.watchdog_base.ScreenshotWatchdog.on_ScreenshotEvent(#0b98) ?? 8s/ 8s ?? TIMEOUT HERE ?
WARNING [bubus]

WARNING [BrowserSession] 📸 Clean screenshot timed out after 6 seconds - no handler registered or slow page?
WARNING [BrowserSession] 🔍 DOMWatchdog.on_BrowserStateRequestEvent: Clean screenshot failed: Event handler browser_use.browser.watchdog_base.ScreenshotWatchdog.on_ScreenshotEvent#6224(?? ScreenshotEvent#0b98 🏃) timed out after 8.0s
WARNING [cdp_use.client] Received duplicate response for request 34 - ignoring
INFO [Agent]

INFO [Agent] 📍 Step 11:
WARNING [cdp_use.client] Received duplicate response for request 37 - ignoring
INFO [Agent] 👍 Eval: Successfully navigated to the BBC article about Trump’s tariff announcements and rationale, which is a recent and authoritative source for my research.
INFO [Agent] 🎯 Next goal: Extract structured data from the BBC article to gather detailed information about Trump’s tariff announcements and their implications for China-US trade.
INFO [Agent] 🦾 [ACTION 1/1] extract_structured_data: query: Extract comprehensive information about Trumps tariff announcements including: specific ta…
INFO [tools] 📄 Extracted content from https://www.bbc.com/news/articles/cn93e12rypgo for query: Extract comprehensive information about Trump’s tariff announcements including: specific tariff rates announced, target countries (especially China), effective dates, duration, key commodities affected, rationale provided, economic impact assessments, and any compliance requirements or key points to pay attention to
Content saved to file system: Extracted content saved to file extracted_content_0.md successfully. and displayed in <read_state>.
INFO [Agent]

INFO [Agent] 📍 Step 12:
INFO [Agent] 👍 Eval: Successfully extracted comprehensive structured data from the BBC article about Trump’s tariff announcements, gathering detailed information on rates, countries, dates, commodities, rationale, economic impacts, and compliance requirements.
INFO [Agent] 🎯 Next goal: Update todo.md to mark BBC source as completed and compile the extracted tariff information into a comprehensive summary for the user.
INFO [Agent] 🦾 [ACTION 1/2] replace_file_str: file_name: todo.md, old_str: - [ ] BBC (August 27, 2025) - Trumps tariff announcements and rationale, new_st
INFO [tools] 💾 Successfully replaced all occurrences of “- [ ] BBC (August 27, 2025) - Trump’s tariff announcements and rationale” with “- [x] BBC (August 27, 2025) - Trump’s tariff announcements and rationale” in file todo.md
INFO [Agent] 🦾 [ACTION 2/2] write_file: file_name: tariff_summary.md, content: # Key Points to Pay Attention to in Recent China-US Tariff Rules\n\n## …
INFO [tools] 💾 Data written to file tariff_summary.md successfully.
INFO [Agent]

INFO [Agent] 📍 Step 13:
INFO [Agent] 👍 Eval: Successfully extracted detailed tariff information from BBC article and created comprehensive summary, but still have additional sources to potentially examine according to todo.md.
INFO [Agent] 🎯 Next goal: Read the tariff_summary.md file to verify its completeness and then provide the comprehensive summary to the user.
INFO [Agent] 🦾 [ACTION 1/1] read_file: file_name: tariff_summary.md
INFO [tools] 💾 Read from file tariff_summary.md.

Key Points to Pay Attention to in Recent China-US Tariff Rules

Overview

Based on recent BBC reporting (August 27, 2025) and Trump administration announcements, here are the critical aspects to monitor in China-US tariff developments:

Tariff Rates and Structure

Baseline Tariff: 10% on all imports from all countries
China-Specific: Country-specific rate suspension until November 10, 2025
Key Commodity Rates:
- 50% on steel and aluminium imports
- 50% on copper imports
- 25% on foreign-made cars and car parts
- 200% on pharmaceutical imports (threatened)

Critical Dates and Durations

US-China Tariff Pause: Extended to November 10, 2025
De Minimis Exemption: Already removed for China and Hong Kong
Global Exemption End: $800 de minimis exemption ends August 29, 2025
Negotiation Periods: Many tariffs subject to 90-day extensions

Compliance Requirements

41 more lines…
INFO [Agent]

INFO [Agent] 📍 Step 14:
INFO [Agent] 👍 Eval: Successfully read the comprehensive tariff summary file that contains all the key points to pay attention to regarding recent China-US tariff rules.
INFO [Agent] 🎯 Next goal: Provide the comprehensive tariff summary to the user by calling the done action with the detailed information.
INFO [Agent] 🦾 [ACTION 1/1] done: text: Based on recent BBC reporting from August 27, 2025 and Trump administration announcements, here are the key po…
INFO [Agent]
📄 Final Result:
Based on recent BBC reporting from August 27, 2025 and Trump administration announcements, here are the key points to pay attention to regarding recent China-US tariff rules:

Key Tariff Rates and Structure

Baseline Tariff: 10% on all imports from all countries
China-Specific: Country-specific rate suspension until November 10, 2025
Key Commodity Rates: 50% on steel/aluminum/copper, 25% on foreign-made cars and car parts, 200% threatened on pharmaceuticals

Critical Dates to Monitor

November 10, 2025: China tariff suspension deadline
August 29, 2025: Global $800 de minimis exemption ends
90-day extensions: Many tariffs subject to negotiation periods

Compliance Changes

De Minimis exemption removed for China and Hong Kong (except gifts under $100)
Tighter customs procedures causing border delays
Some postal services temporarily suspending US deliveries

Economic Impacts

US inflation rose to 2.7% in June 2025 (from 2.4%)
Companies like Nike estimate $1bn in additional costs
Price increases across consumer goods (clothing, coffee, toys, appliances)
IMF and OECD downgraded 2025 economic predictions

Immediate Action Items

Monitor the November 10 deadline for China tariff suspension
Prepare for tighter customs procedures and potential delays
Review supply chain dependencies on affected commodities
Stay updated on bilateral negotiation outcomes
Assess cost impacts for specific product categories
Monitor legal challenges to tariff implementation authority

Risk Areas

Supply chain disruptions due to border delays
Increased production costs for affected commodities
Currency volatility impacting trade calculations
Potential retaliatory measures from trading partners
Legal uncertainty around tariff implementation authority

The most critical immediate focus should be on the November 10, 2025 deadline for China’s tariff suspension and preparing for the tighter compliance requirements already in effect.

Attachments:

tariff_summary.md:

Key Points to Pay Attention to in Recent China-US Tariff Rules

Overview

Based on recent BBC reporting (August 27, 2025) and Trump administration announcements, here are the critical aspects to monitor in China-US tariff developments:

Tariff Rates and Structure

Baseline Tariff: 10% on all imports from all countries
China-Specific: Country-specific rate suspension until November 10, 2025
Key Commodity Rates:
- 50% on steel and aluminium imports
- 50% on copper imports
- 25% on foreign-made cars and car parts
- 200% on pharmaceutical imports (threatened)

Critical Dates and Durations

US-China Tariff Pause: Extended to November 10, 2025
De Minimis Exemption: Already removed for China and Hong Kong
Global Exemption End: $800 de minimis exemption ends August 29, 2025
Negotiation Periods: Many tariffs subject to 90-day extensions

Compliance Requirements

De Minimis Changes: Removal of exemption for packages (except gifts under $100)
Customs Procedures: Tighter checks causing border delays
Postal Services: Some international services temporarily suspending US deliveries
Country Negotiations: Ongoing bilateral discussions affecting tariff applicability

Economic Impacts to Monitor

Inflation: US inflation rose to 2.7% in June 2025 (from 2.4%)
Company Costs: Nike estimates tariffs could add $1bn to its costs
Price Increases: Companies like Adidas, Nike, Mattel increasing prices
Global Growth: IMF and OECD downgraded 2025 economic predictions
Currency Volatility: US dollar value falling sharply at times

Key Commodities Affected

Steel and aluminium products
Copper and related materials
Automotive parts and vehicles
Pharmaceuticals (potential 200% tariff)
Various consumer goods (clothing, coffee, toys, appliances)

Political and Negotiation Context

Rationale: Encourage US-made goods, increase tax revenue, reduce trade deficit
Negotiation Requirements: Partners must address migration and drug trafficking issues
Legal Challenges: Some tariffs subject to court proceedings
Bilateral Deals: Country-specific negotiated rates (EU, UK deals with quotas)

Immediate Action Items

Monitor the November 10 deadline for China tariff suspension
Prepare for tighter customs procedures and potential delays
Review supply chain dependencies on affected commodities
Stay updated on bilateral negotiation outcomes
Assess cost impacts for specific product categories
Monitor legal challenges to tariff authority

Risk Areas

Supply chain disruptions due to border delays
Increased production costs for affected commodities
Currency volatility impacting trade calculations
Potential retaliatory measures from trading partners
Legal uncertainty around tariff implementation authority

INFO [Agent] 👉 Attachment : /var/folders/st/c1rcc2m56h98kpkp63hkp22w0000gn/T/browser_use_agent_068bc12a-5196-7f00-8000-f34c78a45690_1757156005/browseruse_agent_data/tariff_summary.md
INFO [Agent] ? Task completed successfully
WARNING [bubus] ?? Agent_5690🟢(? 0 | ?? 1 | ? 16 ?? 1 👂) Timeout waiting for event bus to be idle after 3.0s (processing: 1)
WARNING [cdp_use.client] WebSocket connection closed: no close frame received or sent
(py311) mason@masondebijibendiannao IDEProjects % ls
KVstorageBaseRaft-cpp algo-realtime-feature feature_cart_1h layoutlmv3 trl
SpecGR browser-use feature_exposure_event nano-vllm vite-react
WideSearch deepseek_chat.py langgraph search-algo
(py311) mason@masondebijibendiannao IDEProjects % cat /var/folders/st/c1rcc2m56h98kpkp63hkp22w0000gn/T/browser_use_agent_068bc12a-5196-7f00-8000-f34c78a45690_1757156005/browseruse_agent_data/tariff_summary.md

Key Points to Pay Attention to in Recent China-US Tariff Rules

Overview

Based on recent BBC reporting (August 27, 2025) and Trump administration announcements, here are the critical aspects to monitor in China-US tariff developments:

Tariff Rates and Structure

Baseline Tariff: 10% on all imports from all countries
China-Specific: Country-specific rate suspension until November 10, 2025
Key Commodity Rates:
- 50% on steel and aluminium imports
- 50% on copper imports
- 25% on foreign-made cars and car parts
- 200% on pharmaceutical imports (threatened)

Critical Dates and Durations

US-China Tariff Pause: Extended to November 10, 2025
De Minimis Exemption: Already removed for China and Hong Kong
Global Exemption End: $800 de minimis exemption ends August 29, 2025
Negotiation Periods: Many tariffs subject to 90-day extensions

Compliance Requirements

De Minimis Changes: Removal of exemption for packages (except gifts under $100)
Customs Procedures: Tighter checks causing border delays
Postal Services: Some international services temporarily suspending US deliveries
Country Negotiations: Ongoing bilateral discussions affecting tariff applicability

Economic Impacts to Monitor

Inflation: US inflation rose to 2.7% in June 2025 (from 2.4%)
Company Costs: Nike estimates tariffs could add $1bn to its costs
Price Increases: Companies like Adidas, Nike, Mattel increasing prices
Global Growth: IMF and OECD downgraded 2025 economic predictions
Currency Volatility: US dollar value falling sharply at times

Key Commodities Affected

Steel and aluminium products
Copper and related materials
Automotive parts and vehicles
Pharmaceuticals (potential 200% tariff)
Various consumer goods (clothing, coffee, toys, appliances)

Political and Negotiation Context

Rationale: Encourage US-made goods, increase tax revenue, reduce trade deficit
Negotiation Requirements: Partners must address migration and drug trafficking issues
Legal Challenges: Some tariffs subject to court proceedings
Bilateral Deals: Country-specific negotiated rates (EU, UK deals with quotas)

Immediate Action Items

Monitor the November 10 deadline for China tariff suspension
Prepare for tighter customs procedures and potential delays
Review supply chain dependencies on affected commodities
Stay updated on bilateral negotiation outcomes
Assess cost impacts for specific product categories
Monitor legal challenges to tariff authority

Risk Areas

Supply chain disruptions due to border delays
Increased production costs for affected commodities
Currency volatility impacting trade calculations
Potential retaliatory measures from trading partners
Legal uncertainty around tariff implementation authority

browser-use 代碼閱讀順序指南

1. 入門與概覽階段

目標：了解項目的整體定位、主要功能和目錄結構

README.md：首先閱讀根目錄的 README.md，獲取項目的基本介紹、特性和使用場景
CLAUDE.md：這個文件包含了代碼庫的架構概述和開發指南，是快速了解項目的絕佳入口
```
/Users/mason/IDEProjects/browser-use/CLAUDE.md
```

示例文件：從簡單示例開始，了解庫的基本用法

# 查看最基礎的使用示例
/Users/mason/IDEProjects/browser-use/examples/simple.py# 查看瀏覽器基本操作示例
/Users/mason/IDEProjects/browser-use/docs/customize/browser/basics.mdx

2. 核心組件概覽

目標：理解主要模塊的職責和它們之間的關系

init.py：查看模塊導出和主要類的組織

/Users/mason/IDEProjects/browser-use/browser_use/__init__.py

配置文件：了解項目的配置系統

/Users/mason/IDEProjects/browser-use/browser_use/config.py

異常定義：了解系統中的主要異常類型

/Users/mason/IDEProjects/browser-use/browser_use/exceptions.py

3. 核心功能模塊深入

按照依賴關系和重要性，依次閱讀以下核心模塊：

3.1 Agent - 中央協調器

Agent 是整個系統的核心協調器，負責接收任務、管理瀏覽器會話和執行 LLM 驅動的操作循環。

# Agent 服務的主要實現
/Users/mason/IDEProjects/browser-use/browser_use/agent/service.py# Agent 提示詞定義
/Users/mason/IDEProjects/browser-use/browser_use/agent/prompts.py# Agent 視圖模型
/Users/mason/IDEProjects/browser-use/browser_use/agent/views.py

3.2 BrowserSession - 瀏覽器會話管理

BrowserSession 負責管理瀏覽器生命周期、CDP 連接和協調多個監視服務。

# 瀏覽器會話的主要實現
/Users/mason/IDEProjects/browser-use/browser_use/browser/session.py# 瀏覽器配置文件
/Users/mason/IDEProjects/browser-use/browser_use/browser/profile.py# 瀏覽器事件定義
/Users/mason/IDEProjects/browser-use/browser_use/browser/events.py# 瀏覽器監視服務
/Users/mason/IDEProjects/browser-use/browser_use/browser/watchdogs/

3.3 Tools - 工具服務

Tools 是動作注冊表，將 LLM 決策映射到具體的瀏覽器操作。

# 工具服務的主要實現
/Users/mason/IDEProjects/browser-use/browser_use/tools/service.py# 工具注冊表
/Users/mason/IDEProjects/browser-use/browser_use/tools/registry/# 工具視圖模型
/Users/mason/IDEProjects/browser-use/browser_use/tools/views.py

3.4 DomService - DOM 處理服務

DomService 負責提取和處理 DOM 內容，處理元素高亮和可訪問性樹生成。

# DOM 服務的主要實現
/Users/mason/IDEProjects/browser-use/browser_use/dom/service.py# DOM 序列化器
/Users/mason/IDEProjects/browser-use/browser_use/dom/serializer/# DOM 視圖模型
/Users/mason/IDEProjects/browser-use/browser_use/dom/views.py

3.5 LLM 集成

LLM 模塊提供了支持多種 LLM 提供商的抽象層。

# LLM 基類定義
/Users/mason/IDEProjects/browser-use/browser_use/llm/base.py# LLM 消息模型
/Users/mason/IDEProjects/browser-use/browser_use/llm/messages.py# OpenAI 集成示例
/Users/mason/IDEProjects/browser-use/browser_use/llm/openai/chat.py

4. 功能特性與用例

在理解了核心組件后，可以查看特定功能和用例的實現：

多標簽操作：

/Users/mason/IDEProjects/browser-use/examples/features/multi_tab.py

不同模型的使用：

/Users/mason/IDEProjects/browser-use/examples/models/

CDP 直接使用：

/Users/mason/IDEProjects/browser-use/examples/browser/using_cdp.py

實際用例：

/Users/mason/IDEProjects/browser-use/examples/use-cases/

5. 進階主題

當您對基礎架構有了深入理解后，可以探索以下進階主題：

事件總線系統：研究 bubus 事件總線如何在系統中實現組件間通信
CDP 集成細節：了解如何通過 cdp-use 庫與 Chrome DevTools Protocol 交互

云同步功能：

/Users/mason/IDEProjects/browser-use/browser_use/sync/

MCP 服務：

/Users/mason/IDEProjects/browser-use/browser_use/mcp/

閱讀技巧

自頂向下：從高級接口和示例開始，然后逐步深入到具體實現
關注接口：理解主要類的公共方法和接口，而不是一開始就陷入細節
跟蹤數據流：特別關注 Agent 如何協調各組件工作，以及數據如何在系統中流動
利用測試：測試文件可以幫助理解組件的預期行為
```
/Users/mason/IDEProjects/browser-use/tests/ci/
```
文檔結合：閱讀代碼的同時參考 docs 目錄下的文檔