import asyncio import gc import inspect import json import logging import re import tempfile import time from collections.abc import Awaitable, Callable from datetime import datetime from pathlib import Path from typing import Any, Generic, Literal, TypeVar from urllib.parse import urlparse from dotenv import load_dotenv from browser_use.agent.cloud_events import ( CreateAgentOutputFileEvent, CreateAgentSessionEvent, CreateAgentStepEvent, CreateAgentTaskEvent, UpdateAgentTaskEvent, ) from browser_use.agent.message_manager.utils import save_conversation from browser_use.llm.base import BaseChatModel from browser_use.llm.messages import BaseMessage, ContentPartImageParam, ContentPartTextParam, UserMessage from browser_use.llm.openai.chat import ChatOpenAI from browser_use.tokens.service import TokenCost load_dotenv() from bubus import EventBus from pydantic import BaseModel, ValidationError from uuid_extensions import uuid7str from browser_use import Browser, BrowserProfile, BrowserSession # Lazy import for gif to avoid heavy agent.views import at startup # from browser_use.agent.gif import create_history_gif from browser_use.agent.message_manager.service import ( MessageManager, ) from browser_use.agent.prompts import SystemPrompt from browser_use.agent.views import ( ActionResult, AgentError, AgentHistory, AgentHistoryList, AgentOutput, AgentSettings, AgentState, AgentStepInfo, AgentStructuredOutput, BrowserStateHistory, StepMetadata, ) from browser_use.browser.session import DEFAULT_BROWSER_PROFILE from browser_use.browser.views import BrowserStateSummary from browser_use.config import CONFIG from browser_use.dom.views import DOMInteractedElement from browser_use.filesystem.file_system import FileSystem from browser_use.observability import observe, observe_debug from browser_use.sync import CloudSync from browser_use.telemetry.service import ProductTelemetry from browser_use.telemetry.views import AgentTelemetryEvent from browser_use.tools.registry.views import ActionModel from browser_use.tools.service import Tools from browser_use.utils import ( URL_PATTERN, _log_pretty_path, check_latest_browser_use_version, get_browser_use_version, get_git_info, time_execution_async, time_execution_sync, ) logger = logging.getLogger(__name__) def log_response(response: AgentOutput, registry=None, logger=None) -> None: """Utility function to log the model's response.""" # Use module logger if no logger provided if logger is None: logger = logging.getLogger(__name__) # Only log thinking if it's present if response.current_state.thinking: logger.debug(f'πŸ’‘ Thinking:\n{response.current_state.thinking}') # Only log evaluation if it's not empty eval_goal = response.current_state.evaluation_previous_goal if eval_goal: if 'success' in eval_goal.lower(): emoji = 'πŸ‘' # Green color for success logger.info(f' \033[32m{emoji} Eval: {eval_goal}\033[0m') elif 'failure' in eval_goal.lower(): emoji = '⚠️' # Red color for failure logger.info(f' \033[31m{emoji} Eval: {eval_goal}\033[0m') else: emoji = '❔' # No color for unknown/neutral logger.info(f' {emoji} Eval: {eval_goal}') # Always log memory if present if response.current_state.memory: logger.debug(f'🧠 Memory: {response.current_state.memory}') # Only log next goal if it's not empty next_goal = response.current_state.next_goal if next_goal: # Blue color for next goal logger.info(f' \033[34m🎯 Next goal: {next_goal}\033[0m') else: logger.info('') # Add empty line for spacing Context = TypeVar('Context') AgentHookFunc = Callable[['Agent'], Awaitable[None]] class Agent(Generic[Context, AgentStructuredOutput]): @time_execution_sync('--init') def __init__( self, task: str, llm: BaseChatModel | None = None, # Optional parameters browser_profile: BrowserProfile | None = None, browser_session: BrowserSession | None = None, browser: Browser | None = None, # Alias for browser_session tools: Tools[Context] | None = None, controller: Tools[Context] | None = None, # Alias for tools # Initial agent run parameters sensitive_data: dict[str, str | dict[str, str]] | None = None, initial_actions: list[dict[str, dict[str, Any]]] | None = None, # Cloud Callbacks register_new_step_callback: ( Callable[['BrowserStateSummary', 'AgentOutput', int], None] # Sync callback | Callable[['BrowserStateSummary', 'AgentOutput', int], Awaitable[None]] # Async callback | None ) = None, register_done_callback: ( Callable[['AgentHistoryList'], Awaitable[None]] # Async Callback | Callable[['AgentHistoryList'], None] # Sync Callback | None ) = None, register_external_agent_status_raise_error_callback: Callable[[], Awaitable[bool]] | None = None, # Agent settings output_model_schema: type[AgentStructuredOutput] | None = None, use_vision: bool = True, save_conversation_path: str | Path | None = None, save_conversation_path_encoding: str | None = 'utf-8', max_failures: int = 3, override_system_message: str | None = None, extend_system_message: str | None = None, generate_gif: bool | str = False, available_file_paths: list[str] | None = None, include_attributes: list[str] | None = None, max_actions_per_step: int = 10, use_thinking: bool = True, flash_mode: bool = False, max_history_items: int | None = None, page_extraction_llm: BaseChatModel | None = None, injected_agent_state: AgentState | None = None, source: str | None = None, file_system_path: str | None = None, task_id: str | None = None, cloud_sync: CloudSync | None = None, calculate_cost: bool = False, display_files_in_done_text: bool = True, include_tool_call_examples: bool = False, vision_detail_level: Literal['auto', 'low', 'high'] = 'auto', llm_timeout: int | None = None, step_timeout: int = 120, directly_open_url: bool = True, include_recent_events: bool = False, sample_images: list[ContentPartTextParam | ContentPartImageParam] | None = None, final_response_after_failure: bool = True, _url_shortening_limit: int = 25, **kwargs, ): if llm is None: default_llm_name = CONFIG.DEFAULT_LLM if default_llm_name: try: from browser_use.llm.models import get_llm_by_name llm = get_llm_by_name(default_llm_name) except (ImportError, ValueError) as e: # Use the logger that's already imported at the top of the module logger.warning( f'Failed to create default LLM "{default_llm_name}": {e}. Falling back to ChatOpenAI(model="gpt-4.1-mini")' ) llm = ChatOpenAI(model='gpt-4.1-mini') else: # No default LLM specified, use the original default llm = ChatOpenAI(model='gpt-4.1-mini') if page_extraction_llm is None: page_extraction_llm = llm if available_file_paths is None: available_file_paths = [] # Set timeout based on model name if not explicitly provided if llm_timeout is None: def _get_model_timeout(llm_model: BaseChatModel) -> int: """Determine timeout based on model name""" model_name = getattr(llm_model, 'model', '').lower() if 'gemini' in model_name or 'groq' in model_name: return 30 elif 'o3' in model_name or 'claude' in model_name or 'sonnet' in model_name or 'deepseek' in model_name: return 90 else: return 60 # Default timeout llm_timeout = _get_model_timeout(llm) self.id = task_id or uuid7str() self.task_id: str = self.id self.session_id: str = uuid7str() browser_profile = browser_profile or DEFAULT_BROWSER_PROFILE # Handle browser vs browser_session parameter (browser takes precedence) if browser and browser_session: raise ValueError('Cannot specify both "browser" and "browser_session" parameters. Use "browser" for the cleaner API.') browser_session = browser or browser_session self.browser_session = browser_session or BrowserSession( browser_profile=browser_profile, id=uuid7str()[:-4] + self.id[-4:], # re-use the same 4-char suffix so they show up together in logs ) # Initialize available file paths as direct attribute self.available_file_paths = available_file_paths # Core components self.task = task self.llm = llm self.directly_open_url = directly_open_url self.include_recent_events = include_recent_events self._url_shortening_limit = _url_shortening_limit if tools is not None: self.tools = tools elif controller is not None: self.tools = controller else: self.tools = Tools(display_files_in_done_text=display_files_in_done_text) # Structured output self.output_model_schema = output_model_schema if self.output_model_schema is not None: self.tools.use_structured_output_action(self.output_model_schema) self.sensitive_data = sensitive_data self.sample_images = sample_images self.settings = AgentSettings( use_vision=use_vision, vision_detail_level=vision_detail_level, save_conversation_path=save_conversation_path, save_conversation_path_encoding=save_conversation_path_encoding, max_failures=max_failures, override_system_message=override_system_message, extend_system_message=extend_system_message, generate_gif=generate_gif, include_attributes=include_attributes, max_actions_per_step=max_actions_per_step, use_thinking=use_thinking, flash_mode=flash_mode, max_history_items=max_history_items, page_extraction_llm=page_extraction_llm, calculate_cost=calculate_cost, include_tool_call_examples=include_tool_call_examples, llm_timeout=llm_timeout, step_timeout=step_timeout, final_response_after_failure=final_response_after_failure, ) # Token cost service self.token_cost_service = TokenCost(include_cost=calculate_cost) self.token_cost_service.register_llm(llm) self.token_cost_service.register_llm(page_extraction_llm) # Initialize state self.state = injected_agent_state or AgentState() # Initialize history self.history = AgentHistoryList(history=[], usage=None) # Initialize agent directory import time timestamp = int(time.time()) base_tmp = Path(tempfile.gettempdir()) self.agent_directory = base_tmp / f'browser_use_agent_{self.id}_{timestamp}' # Initialize file system and screenshot service self._set_file_system(file_system_path) self._set_screenshot_service() # Action setup self._setup_action_models() self._set_browser_use_version_and_source(source) initial_url = None # only load url if no initial actions are provided if self.directly_open_url and not self.state.follow_up_task and not initial_actions: initial_url = self._extract_url_from_task(self.task) if initial_url: self.logger.info(f'πŸ”— Found URL in task: {initial_url}, adding as initial action...') initial_actions = [{'go_to_url': {'url': initial_url, 'new_tab': False}}] self.initial_url = initial_url self.initial_actions = self._convert_initial_actions(initial_actions) if initial_actions else None # Verify we can connect to the model self._verify_and_setup_llm() # TODO: move this logic to the LLMs # Handle users trying to use use_vision=True with DeepSeek models if 'deepseek' in self.llm.model.lower(): self.logger.warning('⚠️ DeepSeek models do not support use_vision=True yet. Setting use_vision=False for now...') self.settings.use_vision = False # Handle users trying to use use_vision=True with XAI models if 'grok' in self.llm.model.lower(): self.logger.warning('⚠️ XAI models do not support use_vision=True yet. Setting use_vision=False for now...') self.settings.use_vision = False logger.debug( f'{" +vision" if self.settings.use_vision else ""}' f' extraction_model={self.settings.page_extraction_llm.model if self.settings.page_extraction_llm else "Unknown"}' f'{" +file_system" if self.file_system else ""}' ) # Initialize available actions for system prompt (only non-filtered actions) # These will be used for the system prompt to maintain caching self.unfiltered_actions = self.tools.registry.get_prompt_description() # Initialize message manager with state # Initial system prompt with all actions - will be updated during each step self._message_manager = MessageManager( task=task, system_message=SystemPrompt( action_description=self.unfiltered_actions, max_actions_per_step=self.settings.max_actions_per_step, override_system_message=override_system_message, extend_system_message=extend_system_message, use_thinking=self.settings.use_thinking, flash_mode=self.settings.flash_mode, ).get_system_message(), file_system=self.file_system, state=self.state.message_manager_state, use_thinking=self.settings.use_thinking, # Settings that were previously in MessageManagerSettings include_attributes=self.settings.include_attributes, sensitive_data=sensitive_data, max_history_items=self.settings.max_history_items, vision_detail_level=self.settings.vision_detail_level, include_tool_call_examples=self.settings.include_tool_call_examples, include_recent_events=self.include_recent_events, sample_images=self.sample_images, ) if self.sensitive_data: # Check if sensitive_data has domain-specific credentials has_domain_specific_credentials = any(isinstance(v, dict) for v in self.sensitive_data.values()) # If no allowed_domains are configured, show a security warning if not self.browser_profile.allowed_domains: self.logger.error( '⚠️ Agent(sensitive_data=β€’β€’β€’β€’β€’β€’β€’β€’) was provided but Browser(allowed_domains=[...]) is not locked down! ⚠️\n' ' ☠️ If the agent visits a malicious website and encounters a prompt-injection attack, your sensitive_data may be exposed!\n\n' ' \n' ) # If we're using domain-specific credentials, validate domain patterns elif has_domain_specific_credentials: # For domain-specific format, ensure all domain patterns are included in allowed_domains domain_patterns = [k for k, v in self.sensitive_data.items() if isinstance(v, dict)] # Validate each domain pattern against allowed_domains for domain_pattern in domain_patterns: is_allowed = False for allowed_domain in self.browser_profile.allowed_domains: # Special cases that don't require URL matching if domain_pattern == allowed_domain or allowed_domain == '*': is_allowed = True break # Need to create example URLs to compare the patterns # Extract the domain parts, ignoring scheme pattern_domain = domain_pattern.split('://')[-1] if '://' in domain_pattern else domain_pattern allowed_domain_part = allowed_domain.split('://')[-1] if '://' in allowed_domain else allowed_domain # Check if pattern is covered by an allowed domain # Example: "google.com" is covered by "*.google.com" if pattern_domain == allowed_domain_part or ( allowed_domain_part.startswith('*.') and ( pattern_domain == allowed_domain_part[2:] or pattern_domain.endswith('.' + allowed_domain_part[2:]) ) ): is_allowed = True break if not is_allowed: self.logger.warning( f'⚠️ Domain pattern "{domain_pattern}" in sensitive_data is not covered by any pattern in allowed_domains={self.browser_profile.allowed_domains}\n' f' This may be a security risk as credentials could be used on unintended domains.' ) # Callbacks self.register_new_step_callback = register_new_step_callback self.register_done_callback = register_done_callback self.register_external_agent_status_raise_error_callback = register_external_agent_status_raise_error_callback # Telemetry self.telemetry = ProductTelemetry() # Event bus with WAL persistence # Default to ~/.config/browseruse/events/{agent_session_id}.jsonl # wal_path = CONFIG.BROWSER_USE_CONFIG_DIR / 'events' / f'{self.session_id}.jsonl' self.eventbus = EventBus(name=f'Agent_{str(self.id)[-4:]}') # Cloud sync service self.enable_cloud_sync = CONFIG.BROWSER_USE_CLOUD_SYNC if self.enable_cloud_sync or cloud_sync is not None: self.cloud_sync = cloud_sync or CloudSync() # Register cloud sync handler self.eventbus.on('*', self.cloud_sync.handle_event) else: self.cloud_sync = None if self.settings.save_conversation_path: self.settings.save_conversation_path = Path(self.settings.save_conversation_path).expanduser().resolve() self.logger.info(f'πŸ’¬ Saving conversation to {_log_pretty_path(self.settings.save_conversation_path)}') # Initialize download tracking assert self.browser_session is not None, 'BrowserSession is not set up' self.has_downloads_path = self.browser_session.browser_profile.downloads_path is not None if self.has_downloads_path: self._last_known_downloads: list[str] = [] self.logger.debug('πŸ“ Initialized download tracking for agent') # Event-based pause control (kept out of AgentState for serialization) self._external_pause_event = asyncio.Event() self._external_pause_event.set() @property def logger(self) -> logging.Logger: """Get instance-specific logger with task ID in the name""" _browser_session_id = self.browser_session.id if self.browser_session else '----' _current_target_id = ( self.browser_session.agent_focus.target_id[-2:] if self.browser_session and self.browser_session.agent_focus and self.browser_session.agent_focus.target_id else '--' ) return logging.getLogger(f'browser_use.AgentπŸ…° {self.task_id[-4:]} β‡’ πŸ…‘ {_browser_session_id[-4:]} πŸ…£ {_current_target_id}') @property def browser_profile(self) -> BrowserProfile: assert self.browser_session is not None, 'BrowserSession is not set up' return self.browser_session.browser_profile async def _check_and_update_downloads(self, context: str = '') -> None: """Check for new downloads and update available file paths.""" if not self.has_downloads_path: return assert self.browser_session is not None, 'BrowserSession is not set up' try: current_downloads = self.browser_session.downloaded_files if current_downloads != self._last_known_downloads: self._update_available_file_paths(current_downloads) self._last_known_downloads = current_downloads if context: self.logger.debug(f'πŸ“ {context}: Updated available files') except Exception as e: error_context = f' {context}' if context else '' self.logger.debug(f'πŸ“ Failed to check for downloads{error_context}: {type(e).__name__}: {e}') def _update_available_file_paths(self, downloads: list[str]) -> None: """Update available_file_paths with downloaded files.""" if not self.has_downloads_path: return current_files = set(self.available_file_paths or []) new_files = set(downloads) - current_files if new_files: self.available_file_paths = list(current_files | new_files) self.logger.info( f'πŸ“ Added {len(new_files)} downloaded files to available_file_paths (total: {len(self.available_file_paths)} files)' ) for file_path in new_files: self.logger.info(f'πŸ“„ New file available: {file_path}') else: self.logger.debug(f'πŸ“ No new downloads detected (tracking {len(current_files)} files)') def _set_file_system(self, file_system_path: str | None = None) -> None: # Check for conflicting parameters if self.state.file_system_state and file_system_path: raise ValueError( 'Cannot provide both file_system_state (from agent state) and file_system_path. ' 'Either restore from existing state or create new file system at specified path, not both.' ) # Check if we should restore from existing state first if self.state.file_system_state: try: # Restore file system from state at the exact same location self.file_system = FileSystem.from_state(self.state.file_system_state) # The parent directory of base_dir is the original file_system_path self.file_system_path = str(self.file_system.base_dir) logger.debug(f'πŸ’Ύ File system restored from state to: {self.file_system_path}') return except Exception as e: logger.error(f'πŸ’Ύ Failed to restore file system from state: {e}') raise e # Initialize new file system try: if file_system_path: self.file_system = FileSystem(file_system_path) self.file_system_path = file_system_path else: # Use the agent directory for file system self.file_system = FileSystem(self.agent_directory) self.file_system_path = str(self.agent_directory) except Exception as e: logger.error(f'πŸ’Ύ Failed to initialize file system: {e}.') raise e # Save file system state to agent state self.state.file_system_state = self.file_system.get_state() logger.debug(f'πŸ’Ύ File system path: {self.file_system_path}') def _set_screenshot_service(self) -> None: """Initialize screenshot service using agent directory""" try: from browser_use.screenshots.service import ScreenshotService self.screenshot_service = ScreenshotService(self.agent_directory) logger.debug(f'πŸ“Έ Screenshot service initialized in: {self.agent_directory}/screenshots') except Exception as e: logger.error(f'πŸ“Έ Failed to initialize screenshot service: {e}.') raise e def save_file_system_state(self) -> None: """Save current file system state to agent state""" if self.file_system: self.state.file_system_state = self.file_system.get_state() else: logger.error('πŸ’Ύ File system is not set up. Cannot save state.') raise ValueError('File system is not set up. Cannot save state.') def _set_browser_use_version_and_source(self, source_override: str | None = None) -> None: """Get the version from pyproject.toml and determine the source of the browser-use package""" # Use the helper function for version detection version = get_browser_use_version() # Determine source try: package_root = Path(__file__).parent.parent.parent repo_files = ['.git', 'README.md', 'docs', 'examples'] if all(Path(package_root / file).exists() for file in repo_files): source = 'git' else: source = 'pip' except Exception as e: self.logger.debug(f'Error determining source: {e}') source = 'unknown' if source_override is not None: source = source_override # self.logger.debug(f'Version: {version}, Source: {source}') # moved later to _log_agent_run so that people are more likely to include it in copy-pasted support ticket logs self.version = version self.source = source def _setup_action_models(self) -> None: """Setup dynamic action models from tools registry""" # Initially only include actions with no filters self.ActionModel = self.tools.registry.create_action_model() # Create output model with the dynamic actions if self.settings.flash_mode: self.AgentOutput = AgentOutput.type_with_custom_actions_flash_mode(self.ActionModel) elif self.settings.use_thinking: self.AgentOutput = AgentOutput.type_with_custom_actions(self.ActionModel) else: self.AgentOutput = AgentOutput.type_with_custom_actions_no_thinking(self.ActionModel) # used to force the done action when max_steps is reached self.DoneActionModel = self.tools.registry.create_action_model(include_actions=['done']) if self.settings.flash_mode: self.DoneAgentOutput = AgentOutput.type_with_custom_actions_flash_mode(self.DoneActionModel) elif self.settings.use_thinking: self.DoneAgentOutput = AgentOutput.type_with_custom_actions(self.DoneActionModel) else: self.DoneAgentOutput = AgentOutput.type_with_custom_actions_no_thinking(self.DoneActionModel) def add_new_task(self, new_task: str) -> None: """Add a new task to the agent, keeping the same task_id as tasks are continuous""" # Simply delegate to message manager - no need for new task_id or events # The task continues with new instructions, it doesn't end and start a new one self.task = new_task self._message_manager.add_new_task(new_task) # Mark as follow-up task and recreate eventbus (gets shut down after each run) self.state.follow_up_task = True self.eventbus = EventBus(name=f'Agent_{str(self.id)[-self.state.n_steps :]}') # Re-register cloud sync handler if it exists (if not disabled) if hasattr(self, 'cloud_sync') and self.cloud_sync and self.enable_cloud_sync: self.eventbus.on('*', self.cloud_sync.handle_event) async def _raise_if_stopped_or_paused(self) -> None: """Utility function that raises an InterruptedError if the agent is stopped or paused.""" if self.register_external_agent_status_raise_error_callback: if await self.register_external_agent_status_raise_error_callback(): raise InterruptedError if self.state.stopped: raise InterruptedError if self.state.paused: raise InterruptedError @observe(name='agent.step', ignore_output=True, ignore_input=True) @time_execution_async('--step') async def step(self, step_info: AgentStepInfo | None = None) -> None: """Execute one step of the task""" # Initialize timing first, before any exceptions can occur self.step_start_time = time.time() browser_state_summary = None try: # Phase 1: Prepare context and timing browser_state_summary = await self._prepare_context(step_info) # Phase 2: Get model output and execute actions await self._get_next_action(browser_state_summary) await self._execute_actions() # Phase 3: Post-processing await self._post_process() except Exception as e: # Handle ALL exceptions in one place await self._handle_step_error(e) finally: await self._finalize(browser_state_summary) async def _prepare_context(self, step_info: AgentStepInfo | None = None) -> BrowserStateSummary: """Prepare the context for the step: browser state, action models, page actions""" # step_start_time is now set in step() method assert self.browser_session is not None, 'BrowserSession is not set up' self.logger.debug(f'🌐 Step {self.state.n_steps}: Getting browser state...') # Always take screenshots for all steps self.logger.debug('πŸ“Έ Requesting browser state with include_screenshot=True') browser_state_summary = await self.browser_session.get_browser_state_summary( cache_clickable_elements_hashes=True, include_screenshot=True, # always capture even if use_vision=False so that cloud sync is useful (it's fast now anyway) include_recent_events=self.include_recent_events, ) if browser_state_summary.screenshot: self.logger.debug(f'πŸ“Έ Got browser state WITH screenshot, length: {len(browser_state_summary.screenshot)}') else: self.logger.debug('πŸ“Έ Got browser state WITHOUT screenshot') # Check for new downloads after getting browser state (catches PDF auto-downloads and previous step downloads) await self._check_and_update_downloads(f'Step {self.state.n_steps}: after getting browser state') self._log_step_context(browser_state_summary) await self._raise_if_stopped_or_paused() # Update action models with page-specific actions self.logger.debug(f'πŸ“ Step {self.state.n_steps}: Updating action models...') await self._update_action_models_for_page(browser_state_summary.url) # Get page-specific filtered actions page_filtered_actions = self.tools.registry.get_prompt_description(browser_state_summary.url) # Page-specific actions will be included directly in the browser_state message self.logger.debug(f'πŸ’¬ Step {self.state.n_steps}: Creating state messages for context...') self._message_manager.create_state_messages( browser_state_summary=browser_state_summary, model_output=self.state.last_model_output, result=self.state.last_result, step_info=step_info, use_vision=self.settings.use_vision, page_filtered_actions=page_filtered_actions if page_filtered_actions else None, sensitive_data=self.sensitive_data, available_file_paths=self.available_file_paths, # Always pass current available_file_paths ) await self._force_done_after_last_step(step_info) await self._force_done_after_failure() return browser_state_summary @observe_debug(ignore_input=True, name='get_next_action') async def _get_next_action(self, browser_state_summary: BrowserStateSummary) -> None: """Execute LLM interaction with retry logic and handle callbacks""" input_messages = self._message_manager.get_messages() self.logger.debug( f'πŸ€– Step {self.state.n_steps}: Calling LLM with {len(input_messages)} messages (model: {self.llm.model})...' ) try: model_output = await asyncio.wait_for( self._get_model_output_with_retry(input_messages), timeout=self.settings.llm_timeout ) except TimeoutError: @observe(name='_llm_call_timed_out_with_input') async def _log_model_input_to_lmnr(input_messages: list[BaseMessage]) -> None: """Log the model input""" pass await _log_model_input_to_lmnr(input_messages) raise TimeoutError( f'LLM call timed out after {self.settings.llm_timeout} seconds. Keep your thinking and output short.' ) self.state.last_model_output = model_output # Check again for paused/stopped state after getting model output await self._raise_if_stopped_or_paused() # Handle callbacks and conversation saving await self._handle_post_llm_processing(browser_state_summary, input_messages) # check again if Ctrl+C was pressed before we commit the output to history await self._raise_if_stopped_or_paused() async def _execute_actions(self) -> None: """Execute the actions from model output""" if self.state.last_model_output is None: raise ValueError('No model output to execute actions from') self.logger.debug(f'⚑ Step {self.state.n_steps}: Executing {len(self.state.last_model_output.action)} actions...') result = await self.multi_act(self.state.last_model_output.action) self.logger.debug(f'βœ… Step {self.state.n_steps}: Actions completed') self.state.last_result = result async def _post_process(self) -> None: """Handle post-action processing like download tracking and result logging""" assert self.browser_session is not None, 'BrowserSession is not set up' # Check for new downloads after executing actions await self._check_and_update_downloads('after executing actions') # check for action errors and len more than 1 if self.state.last_result and len(self.state.last_result) == 1 and self.state.last_result[-1].error: self.state.consecutive_failures += 1 self.logger.debug(f'πŸ”„ Step {self.state.n_steps}: Consecutive failures: {self.state.consecutive_failures}') return self.state.consecutive_failures = 0 self.logger.debug(f'πŸ”„ Step {self.state.n_steps}: Consecutive failures reset to: {self.state.consecutive_failures}') # Log completion results if self.state.last_result and len(self.state.last_result) > 0 and self.state.last_result[-1].is_done: success = self.state.last_result[-1].success if success: # Green color for success self.logger.info(f'\nπŸ“„ \033[32m Final Result:\033[0m \n{self.state.last_result[-1].extracted_content}\n\n') else: # Red color for failure self.logger.info(f'\nπŸ“„ \033[31m Final Result:\033[0m \n{self.state.last_result[-1].extracted_content}\n\n') if self.state.last_result[-1].attachments: total_attachments = len(self.state.last_result[-1].attachments) for i, file_path in enumerate(self.state.last_result[-1].attachments): self.logger.info(f'πŸ‘‰ Attachment {i + 1 if total_attachments > 1 else ""}: {file_path}') async def _handle_step_error(self, error: Exception) -> None: """Handle all types of errors that can occur during a step""" # Handle all other exceptions include_trace = self.logger.isEnabledFor(logging.DEBUG) error_msg = AgentError.format_error(error, include_trace=include_trace) prefix = f'❌ Result failed {self.state.consecutive_failures + 1}/{self.settings.max_failures + int(self.settings.final_response_after_failure)} times:\n ' self.state.consecutive_failures += 1 # Handle InterruptedError specially if isinstance(error, InterruptedError): error_msg = 'The agent was interrupted mid-step' + (f' - {error}' if error else '') self.logger.error(f'{prefix}{error_msg}') elif 'Could not parse response' in error_msg or 'tool_use_failed' in error_msg: # give model a hint how output should look like logger.debug(f'Model: {self.llm.model} failed') error_msg += '\n\nReturn a valid JSON object with the required fields.' logger.error(f'{prefix}{error_msg}') # Add context message to help model fix parsing errors parse_hint = 'Your response could not be parsed. Return a valid JSON object with the required fields.' # self._message_manager._add_context_message(UserMessage(content=parse_hint)) else: self.logger.error(f'{prefix}{error_msg}') self.state.last_result = [ActionResult(error=error_msg)] return None async def _finalize(self, browser_state_summary: BrowserStateSummary | None) -> None: """Finalize the step with history, logging, and events""" step_end_time = time.time() if not self.state.last_result: return if browser_state_summary: metadata = StepMetadata( step_number=self.state.n_steps, step_start_time=self.step_start_time, step_end_time=step_end_time, ) # Use _make_history_item like main branch await self._make_history_item(self.state.last_model_output, browser_state_summary, self.state.last_result, metadata) # Log step completion summary self._log_step_completion_summary(self.step_start_time, self.state.last_result) # Save file system state after step completion self.save_file_system_state() # Emit both step created and executed events if browser_state_summary and self.state.last_model_output: # Extract key step data for the event actions_data = [] if self.state.last_model_output.action: for action in self.state.last_model_output.action: action_dict = action.model_dump() if hasattr(action, 'model_dump') else {} actions_data.append(action_dict) # Emit CreateAgentStepEvent only if cloud sync is enabled if self.enable_cloud_sync: step_event = CreateAgentStepEvent.from_agent_step( self, self.state.last_model_output, self.state.last_result, actions_data, browser_state_summary, ) self.eventbus.dispatch(step_event) # Increment step counter after step is fully completed self.state.n_steps += 1 async def _force_done_after_last_step(self, step_info: AgentStepInfo | None = None) -> None: """Handle special processing for the last step""" if step_info and step_info.is_last_step(): # Add last step warning if needed msg = 'Now comes your last step. Use only the "done" action now. No other actions - so here your action sequence must have length 1.' msg += '\nIf the task is not yet fully finished as requested by the user, set success in "done" to false! E.g. if not all steps are fully completed.' msg += '\nIf the task is fully finished, set success in "done" to true.' msg += '\nInclude everything you found out for the ultimate task in the done text.' self.logger.debug('Last step finishing up') self._message_manager._add_context_message(UserMessage(content=msg)) self.AgentOutput = self.DoneAgentOutput async def _force_done_after_failure(self) -> None: """Force done after failure""" # Create recovery message if self.state.consecutive_failures >= self.settings.max_failures and self.settings.final_response_after_failure: msg = f'You have failed {self.settings.max_failures} consecutive times. This is your final step to complete the task or provide what you found. ' msg += 'Use only the "done" action now. No other actions - so here your action sequence must have length 1.' msg += '\nIf the task could not be completed due to the failures, set success in "done" to false!' msg += '\nInclude everything you found out for the task in the done text.' self.logger.debug('Force done action, because we reached max_failures.') self._message_manager._add_context_message(UserMessage(content=msg)) self.AgentOutput = self.DoneAgentOutput async def _get_model_output_with_retry(self, input_messages: list[BaseMessage]) -> AgentOutput: """Get model output with retry logic for empty actions""" model_output = await self.get_model_output(input_messages) self.logger.debug( f'βœ… Step {self.state.n_steps}: Got LLM response with {len(model_output.action) if model_output.action else 0} actions' ) if ( not model_output.action or not isinstance(model_output.action, list) or all(action.model_dump() == {} for action in model_output.action) ): self.logger.warning('Model returned empty action. Retrying...') clarification_message = UserMessage( content='You forgot to return an action. Please respond with a valid JSON action according to the expected schema with your assessment and next actions.' ) retry_messages = input_messages + [clarification_message] model_output = await self.get_model_output(retry_messages) if not model_output.action or all(action.model_dump() == {} for action in model_output.action): self.logger.warning('Model still returned empty after retry. Inserting safe noop action.') action_instance = self.ActionModel() setattr( action_instance, 'done', { 'success': False, 'text': 'No next action returned by LLM!', }, ) model_output.action = [action_instance] return model_output async def _handle_post_llm_processing( self, browser_state_summary: BrowserStateSummary, input_messages: list[BaseMessage], ) -> None: """Handle callbacks and conversation saving after LLM interaction""" if self.register_new_step_callback and self.state.last_model_output: if inspect.iscoroutinefunction(self.register_new_step_callback): await self.register_new_step_callback( browser_state_summary, self.state.last_model_output, self.state.n_steps, ) else: self.register_new_step_callback( browser_state_summary, self.state.last_model_output, self.state.n_steps, ) if self.settings.save_conversation_path and self.state.last_model_output: # Treat save_conversation_path as a directory (consistent with other recording paths) conversation_dir = Path(self.settings.save_conversation_path) conversation_filename = f'conversation_{self.id}_{self.state.n_steps}.txt' target = conversation_dir / conversation_filename await save_conversation( input_messages, self.state.last_model_output, target, self.settings.save_conversation_path_encoding, ) async def _make_history_item( self, model_output: AgentOutput | None, browser_state_summary: BrowserStateSummary, result: list[ActionResult], metadata: StepMetadata | None = None, ) -> None: """Create and store history item""" if model_output: interacted_elements = AgentHistory.get_interacted_element(model_output, browser_state_summary.dom_state.selector_map) else: interacted_elements = [None] # Store screenshot and get path screenshot_path = None if browser_state_summary.screenshot: self.logger.debug( f'πŸ“Έ Storing screenshot for step {self.state.n_steps}, screenshot length: {len(browser_state_summary.screenshot)}' ) screenshot_path = await self.screenshot_service.store_screenshot(browser_state_summary.screenshot, self.state.n_steps) self.logger.debug(f'πŸ“Έ Screenshot stored at: {screenshot_path}') else: self.logger.debug(f'πŸ“Έ No screenshot in browser_state_summary for step {self.state.n_steps}') state_history = BrowserStateHistory( url=browser_state_summary.url, title=browser_state_summary.title, tabs=browser_state_summary.tabs, interacted_element=interacted_elements, screenshot_path=screenshot_path, ) history_item = AgentHistory( model_output=model_output, result=result, state=state_history, metadata=metadata, ) self.history.add_item(history_item) def _remove_think_tags(self, text: str) -> str: THINK_TAGS = re.compile(r'.*?', re.DOTALL) STRAY_CLOSE_TAG = re.compile(r'.*?', re.DOTALL) # Step 1: Remove well-formed ... text = re.sub(THINK_TAGS, '', text) # Step 2: If there's an unmatched closing tag , # remove everything up to and including that. text = re.sub(STRAY_CLOSE_TAG, '', text) return text.strip() # region - URL replacement def _replace_urls_in_text(self, text: str) -> tuple[str, dict[str, str]]: """Replace URLs in a text string""" replaced_urls: dict[str, str] = {} def replace_url(match: re.Match) -> str: """Url can only have 1 query and 1 fragment""" import hashlib original_url = match.group(0) # Find where the query/fragment starts query_start = original_url.find('?') fragment_start = original_url.find('#') # Find the earliest position of query or fragment after_path_start = len(original_url) # Default: no query/fragment if query_start != -1: after_path_start = min(after_path_start, query_start) if fragment_start != -1: after_path_start = min(after_path_start, fragment_start) # Split URL into base (up to path) and after_path (query + fragment) base_url = original_url[:after_path_start] after_path = original_url[after_path_start:] # If after_path is within the limit, don't shorten if len(after_path) <= self._url_shortening_limit: return original_url # If after_path is too long, truncate and add hash if after_path: truncated_after_path = after_path[: self._url_shortening_limit] # Create a short hash of the full after_path content hash_obj = hashlib.md5(after_path.encode('utf-8')) short_hash = hash_obj.hexdigest()[:7] # Create shortened URL shortened = f'{base_url}{truncated_after_path}...{short_hash}' # Only use shortened URL if it's actually shorter than the original if len(shortened) < len(original_url): replaced_urls[shortened] = original_url return shortened return original_url return URL_PATTERN.sub(replace_url, text), replaced_urls def _process_messsages_and_replace_long_urls_shorter_ones(self, input_messages: list[BaseMessage]) -> dict[str, str]: """Replace long URLs with shorter ones ? @dev edits input_messages in place returns: tuple[filtered_input_messages, urls we replaced {shorter_url: original_url}] """ from browser_use.llm.messages import AssistantMessage, UserMessage urls_replaced: dict[str, str] = {} # Process each message, in place for message in input_messages: # no need to process SystemMessage, we have control over that anyway if isinstance(message, (UserMessage, AssistantMessage)): if isinstance(message.content, str): # Simple string content message.content, replaced_urls = self._replace_urls_in_text(message.content) urls_replaced.update(replaced_urls) elif isinstance(message.content, list): # List of content parts for part in message.content: if isinstance(part, ContentPartTextParam): part.text, replaced_urls = self._replace_urls_in_text(part.text) urls_replaced.update(replaced_urls) return urls_replaced @staticmethod def _recursive_process_all_strings_inside_pydantic_model(model: BaseModel, url_replacements: dict[str, str]) -> None: """Recursively process all strings inside a Pydantic model, replacing shortened URLs with originals in place.""" for field_name, field_value in model.__dict__.items(): if isinstance(field_value, str): # Replace shortened URLs with original URLs in string processed_string = Agent._replace_shortened_urls_in_string(field_value, url_replacements) setattr(model, field_name, processed_string) elif isinstance(field_value, BaseModel): # Recursively process nested Pydantic models Agent._recursive_process_all_strings_inside_pydantic_model(field_value, url_replacements) elif isinstance(field_value, dict): # Process dictionary values in place Agent._recursive_process_dict(field_value, url_replacements) elif isinstance(field_value, (list, tuple)): processed_value = Agent._recursive_process_list_or_tuple(field_value, url_replacements) setattr(model, field_name, processed_value) @staticmethod def _recursive_process_dict(dictionary: dict, url_replacements: dict[str, str]) -> None: """Helper method to process dictionaries.""" for k, v in dictionary.items(): if isinstance(v, str): dictionary[k] = Agent._replace_shortened_urls_in_string(v, url_replacements) elif isinstance(v, BaseModel): Agent._recursive_process_all_strings_inside_pydantic_model(v, url_replacements) elif isinstance(v, dict): Agent._recursive_process_dict(v, url_replacements) elif isinstance(v, (list, tuple)): dictionary[k] = Agent._recursive_process_list_or_tuple(v, url_replacements) @staticmethod def _recursive_process_list_or_tuple(container: list | tuple, url_replacements: dict[str, str]) -> list | tuple: """Helper method to process lists and tuples.""" if isinstance(container, tuple): # For tuples, create a new tuple with processed items processed_items = [] for item in container: if isinstance(item, str): processed_items.append(Agent._replace_shortened_urls_in_string(item, url_replacements)) elif isinstance(item, BaseModel): Agent._recursive_process_all_strings_inside_pydantic_model(item, url_replacements) processed_items.append(item) elif isinstance(item, dict): Agent._recursive_process_dict(item, url_replacements) processed_items.append(item) elif isinstance(item, (list, tuple)): processed_items.append(Agent._recursive_process_list_or_tuple(item, url_replacements)) else: processed_items.append(item) return tuple(processed_items) else: # For lists, modify in place for i, item in enumerate(container): if isinstance(item, str): container[i] = Agent._replace_shortened_urls_in_string(item, url_replacements) elif isinstance(item, BaseModel): Agent._recursive_process_all_strings_inside_pydantic_model(item, url_replacements) elif isinstance(item, dict): Agent._recursive_process_dict(item, url_replacements) elif isinstance(item, (list, tuple)): container[i] = Agent._recursive_process_list_or_tuple(item, url_replacements) return container @staticmethod def _replace_shortened_urls_in_string(text: str, url_replacements: dict[str, str]) -> str: """Replace all shortened URLs in a string with their original URLs.""" result = text for shortened_url, original_url in url_replacements.items(): result = result.replace(shortened_url, original_url) return result # endregion - URL replacement @time_execution_async('--get_next_action') @observe_debug(ignore_input=True, ignore_output=True, name='get_model_output') async def get_model_output(self, input_messages: list[BaseMessage]) -> AgentOutput: """Get next action from LLM based on current state""" urls_replaced = self._process_messsages_and_replace_long_urls_shorter_ones(input_messages) try: response = await self.llm.ainvoke(input_messages, output_format=self.AgentOutput) parsed = response.completion # Replace any shortened URLs in the LLM response back to original URLs if urls_replaced: self._recursive_process_all_strings_inside_pydantic_model(parsed, urls_replaced) # cut the number of actions to max_actions_per_step if needed if len(parsed.action) > self.settings.max_actions_per_step: parsed.action = parsed.action[: self.settings.max_actions_per_step] if not (hasattr(self.state, 'paused') and (self.state.paused or self.state.stopped)): log_response(parsed, self.tools.registry.registry, self.logger) self._log_next_action_summary(parsed) return parsed except ValidationError: # Just re-raise - Pydantic's validation errors are already descriptive raise async def _log_agent_run(self) -> None: """Log the agent run""" # Blue color for task self.logger.info(f'\033[34mπŸš€ Task: {self.task}\033[0m') self.logger.debug(f'πŸ€– Browser-Use Library Version {self.version} ({self.source})') # Check for latest version and log upgrade message if needed latest_version = await check_latest_browser_use_version() if latest_version and latest_version != self.version: self.logger.info( f'πŸ“¦ Newer version available: {latest_version} (current: {self.version}). Upgrade with: uv add browser-use@{latest_version}' ) def _log_first_step_startup(self) -> None: """Log startup message only on the first step""" if len(self.history.history) == 0: self.logger.info(f'🧠 Starting a browser-use version {self.version} with model={self.llm.model}') def _log_step_context(self, browser_state_summary: BrowserStateSummary) -> None: """Log step context information""" url = browser_state_summary.url if browser_state_summary else '' url_short = url[:50] + '...' if len(url) > 50 else url interactive_count = len(browser_state_summary.dom_state.selector_map) if browser_state_summary else 0 self.logger.info('\n') self.logger.info(f'πŸ“ Step {self.state.n_steps}:') self.logger.debug(f'Evaluating page with {interactive_count} interactive elements on: {url_short}') def _log_next_action_summary(self, parsed: 'AgentOutput') -> None: """Log a comprehensive summary of the next action(s)""" if not (self.logger.isEnabledFor(logging.DEBUG) and parsed.action): return action_count = len(parsed.action) # Collect action details action_details = [] for i, action in enumerate(parsed.action): action_data = action.model_dump(exclude_unset=True) action_name = next(iter(action_data.keys())) if action_data else 'unknown' action_params = action_data.get(action_name, {}) if action_data else {} # Format key parameters concisely param_summary = [] if isinstance(action_params, dict): for key, value in action_params.items(): if key == 'index': param_summary.append(f'#{value}') elif key == 'text' and isinstance(value, str): text_preview = value[:30] + '...' if len(value) > 30 else value param_summary.append(f'text="{text_preview}"') elif key == 'url': param_summary.append(f'url="{value}"') elif key == 'success': param_summary.append(f'success={value}') elif isinstance(value, (str, int, bool)): val_str = str(value)[:30] + '...' if len(str(value)) > 30 else str(value) param_summary.append(f'{key}={val_str}') param_str = f'({", ".join(param_summary)})' if param_summary else '' action_details.append(f'{action_name}{param_str}') # Create summary based on single vs multi-action if action_count == 1: self.logger.info(f'☝️ Decided next action: {action_name}{param_str}') else: summary_lines = [f'✌️ Decided next {action_count} multi-actions:'] for i, detail in enumerate(action_details): summary_lines.append(f' {i + 1}. {detail}') self.logger.info('\n'.join(summary_lines)) def _log_step_completion_summary(self, step_start_time: float, result: list[ActionResult]) -> None: """Log step completion summary with action count, timing, and success/failure stats""" if not result: return step_duration = time.time() - step_start_time action_count = len(result) # Count success and failures success_count = sum(1 for r in result if not r.error) failure_count = action_count - success_count # Format success/failure indicators success_indicator = f'βœ… {success_count}' if success_count > 0 else '' failure_indicator = f'❌ {failure_count}' if failure_count > 0 else '' status_parts = [part for part in [success_indicator, failure_indicator] if part] status_str = ' | '.join(status_parts) if status_parts else 'βœ… 0' self.logger.debug( f'πŸ“ Step {self.state.n_steps}: Ran {action_count} action{"" if action_count == 1 else "s"} in {step_duration:.2f}s: {status_str}' ) def _log_agent_event(self, max_steps: int, agent_run_error: str | None = None) -> None: """Sent the agent event for this run to telemetry""" token_summary = self.token_cost_service.get_usage_tokens_for_model(self.llm.model) # Prepare action_history data correctly action_history_data = [] for item in self.history.history: if item.model_output and item.model_output.action: # Convert each ActionModel in the step to its dictionary representation step_actions = [ action.model_dump(exclude_unset=True) for action in item.model_output.action if action # Ensure action is not None if list allows it ] action_history_data.append(step_actions) else: # Append None or [] if a step had no actions or no model output action_history_data.append(None) final_res = self.history.final_result() final_result_str = json.dumps(final_res) if final_res is not None else None self.telemetry.capture( AgentTelemetryEvent( task=self.task, model=self.llm.model, model_provider=self.llm.provider, max_steps=max_steps, max_actions_per_step=self.settings.max_actions_per_step, use_vision=self.settings.use_vision, version=self.version, source=self.source, cdp_url=urlparse(self.browser_session.cdp_url).hostname if self.browser_session and self.browser_session.cdp_url else None, action_errors=self.history.errors(), action_history=action_history_data, urls_visited=self.history.urls(), steps=self.state.n_steps, total_input_tokens=token_summary.prompt_tokens, total_duration_seconds=self.history.total_duration_seconds(), success=self.history.is_successful(), final_result_response=final_result_str, error_message=agent_run_error, ) ) async def take_step(self, step_info: AgentStepInfo | None = None) -> tuple[bool, bool]: """Take a step Returns: Tuple[bool, bool]: (is_done, is_valid) """ if step_info is not None and step_info.step_number == 0: # First step self._log_first_step_startup() await self._execute_initial_actions() await self.step(step_info) if self.history.is_done(): await self.log_completion() if self.register_done_callback: if inspect.iscoroutinefunction(self.register_done_callback): await self.register_done_callback(self.history) else: self.register_done_callback(self.history) return True, True return False, False def _extract_url_from_task(self, task: str) -> str | None: """Extract URL from task string using naive pattern matching.""" import re # Remove email addresses from task before looking for URLs task_without_emails = re.sub(r'\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b', '', task) # Look for common URL patterns patterns = [ r'https?://[^\s<>"\']+', # Full URLs with http/https r'(?:www\.)?[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*\.[a-zA-Z]{2,}(?:/[^\s<>"\']*)?', # Domain names with subdomains and optional paths ] found_urls = [] for pattern in patterns: matches = re.finditer(pattern, task_without_emails) for match in matches: url = match.group(0) # Remove trailing punctuation that's not part of URLs url = re.sub(r'[.,;:!?()\[\]]+$', '', url) # Add https:// if missing if not url.startswith(('http://', 'https://')): url = 'https://' + url found_urls.append(url) unique_urls = list(set(found_urls)) # If multiple URLs found, skip directly_open_urling if len(unique_urls) > 1: self.logger.debug(f'Multiple URLs found ({len(found_urls)}), skipping directly_open_url to avoid ambiguity') return None # If exactly one URL found, return it if len(unique_urls) == 1: return unique_urls[0] return None @observe(name='agent.run', metadata={'task': '{{task}}', 'debug': '{{debug}}'}) @time_execution_async('--run') async def run( self, max_steps: int = 100, on_step_start: AgentHookFunc | None = None, on_step_end: AgentHookFunc | None = None, ) -> AgentHistoryList[AgentStructuredOutput]: """Execute the task with maximum number of steps""" loop = asyncio.get_event_loop() agent_run_error: str | None = None # Initialize error tracking variable self._force_exit_telemetry_logged = False # ADDED: Flag for custom telemetry on force exit # Set up the signal handler with callbacks specific to this agent from browser_use.utils import SignalHandler # Define the custom exit callback function for second CTRL+C def on_force_exit_log_telemetry(): self._log_agent_event(max_steps=max_steps, agent_run_error='SIGINT: Cancelled by user') # NEW: Call the flush method on the telemetry instance if hasattr(self, 'telemetry') and self.telemetry: self.telemetry.flush() self._force_exit_telemetry_logged = True # Set the flag signal_handler = SignalHandler( loop=loop, pause_callback=self.pause, resume_callback=self.resume, custom_exit_callback=on_force_exit_log_telemetry, # Pass the new telemetrycallback exit_on_second_int=True, ) signal_handler.register() try: await self._log_agent_run() self.logger.debug( f'πŸ”§ Agent setup: Agent Session ID {self.session_id[-4:]}, Task ID {self.task_id[-4:]}, Browser Session ID {self.browser_session.id[-4:] if self.browser_session else "None"} {"(connecting via CDP)" if (self.browser_session and self.browser_session.cdp_url) else "(launching local browser)"}' ) # Initialize timing for session and task self._session_start_time = time.time() self._task_start_time = self._session_start_time # Initialize task start time # Only dispatch session events if this is the first run if not self.state.session_initialized: if self.enable_cloud_sync: self.logger.debug('πŸ“‘ Dispatching CreateAgentSessionEvent...') # Emit CreateAgentSessionEvent at the START of run() self.eventbus.dispatch(CreateAgentSessionEvent.from_agent(self)) # Brief delay to ensure session is created in backend before sending task await asyncio.sleep(0.2) self.state.session_initialized = True if self.enable_cloud_sync: self.logger.debug('πŸ“‘ Dispatching CreateAgentTaskEvent...') # Emit CreateAgentTaskEvent at the START of run() self.eventbus.dispatch(CreateAgentTaskEvent.from_agent(self)) # Start browser session and attach watchdogs await self.browser_session.start() await self._execute_initial_actions() # Log startup message on first step (only if we haven't already done steps) self._log_first_step_startup() self.logger.debug(f'πŸ”„ Starting main execution loop with max {max_steps} steps...') for step in range(max_steps): # Use the consolidated pause state management if self.state.paused: self.logger.debug(f'⏸️ Step {step}: Agent paused, waiting to resume...') await self._external_pause_event.wait() signal_handler.reset() # Check if we should stop due to too many failures, if final_response_after_failure is True, we try one last time if (self.state.consecutive_failures) >= self.settings.max_failures + int( self.settings.final_response_after_failure ): self.logger.error(f'❌ Stopping due to {self.settings.max_failures} consecutive failures') agent_run_error = f'Stopped due to {self.settings.max_failures} consecutive failures' break # Check control flags before each step if self.state.stopped: self.logger.info('πŸ›‘ Agent stopped') agent_run_error = 'Agent stopped programmatically' break if on_step_start is not None: await on_step_start(self) self.logger.debug(f'🚢 Starting step {step + 1}/{max_steps}...') step_info = AgentStepInfo(step_number=step, max_steps=max_steps) try: await asyncio.wait_for( self.step(step_info), timeout=self.settings.step_timeout, ) self.logger.debug(f'βœ… Completed step {step + 1}/{max_steps}') except TimeoutError: # Handle step timeout gracefully error_msg = f'Step {step + 1} timed out after {self.settings.step_timeout} seconds' self.logger.error(f'⏰ {error_msg}') self.state.consecutive_failures += 1 self.state.last_result = [ActionResult(error=error_msg)] if on_step_end is not None: await on_step_end(self) if self.history.is_done(): self.logger.debug(f'🎯 Task completed after {step + 1} steps!') await self.log_completion() if self.register_done_callback: if inspect.iscoroutinefunction(self.register_done_callback): await self.register_done_callback(self.history) else: self.register_done_callback(self.history) # Task completed break else: agent_run_error = 'Failed to complete task in maximum steps' self.history.add_item( AgentHistory( model_output=None, result=[ActionResult(error=agent_run_error, include_in_memory=True)], state=BrowserStateHistory( url='', title='', tabs=[], interacted_element=[], screenshot_path=None, ), metadata=None, ) ) self.logger.info(f'❌ {agent_run_error}') self.logger.debug('πŸ“Š Collecting usage summary...') self.history.usage = await self.token_cost_service.get_usage_summary() # set the model output schema and call it on the fly if self.history._output_model_schema is None and self.output_model_schema is not None: self.history._output_model_schema = self.output_model_schema self.logger.debug('🏁 Agent.run() completed successfully') return self.history except KeyboardInterrupt: # Already handled by our signal handler, but catch any direct KeyboardInterrupt as well self.logger.debug('Got KeyboardInterrupt during execution, returning current history') agent_run_error = 'KeyboardInterrupt' self.history.usage = await self.token_cost_service.get_usage_summary() return self.history except Exception as e: self.logger.error(f'Agent run failed with exception: {e}', exc_info=True) agent_run_error = str(e) raise e finally: # Log token usage summary await self.token_cost_service.log_usage_summary() # Unregister signal handlers before cleanup signal_handler.unregister() if not self._force_exit_telemetry_logged: # MODIFIED: Check the flag try: self._log_agent_event(max_steps=max_steps, agent_run_error=agent_run_error) except Exception as log_e: # Catch potential errors during logging itself self.logger.error(f'Failed to log telemetry event: {log_e}', exc_info=True) else: # ADDED: Info message when custom telemetry for SIGINT was already logged self.logger.debug('Telemetry for force exit (SIGINT) was logged by custom exit callback.') # NOTE: CreateAgentSessionEvent and CreateAgentTaskEvent are now emitted at the START of run() # to match backend requirements for CREATE events to be fired when entities are created, # not when they are completed # Emit UpdateAgentTaskEvent at the END of run() with final task state if self.enable_cloud_sync: self.eventbus.dispatch(UpdateAgentTaskEvent.from_agent(self)) # Generate GIF if needed before stopping event bus if self.settings.generate_gif: output_path: str = 'agent_history.gif' if isinstance(self.settings.generate_gif, str): output_path = self.settings.generate_gif # Lazy import gif module to avoid heavy startup cost from browser_use.agent.gif import create_history_gif create_history_gif(task=self.task, history=self.history, output_path=output_path) # Only emit output file event if GIF was actually created if Path(output_path).exists(): output_event = await CreateAgentOutputFileEvent.from_agent_and_file(self, output_path) self.eventbus.dispatch(output_event) # Wait briefly for cloud auth to start and print the URL, but don't block for completion if self.enable_cloud_sync and hasattr(self, 'cloud_sync') and self.cloud_sync is not None: if self.cloud_sync.auth_task and not self.cloud_sync.auth_task.done(): try: # Wait up to 1 second for auth to start and print URL await asyncio.wait_for(self.cloud_sync.auth_task, timeout=1.0) except TimeoutError: logger.debug('Cloud authentication started - continuing in background') except Exception as e: logger.debug(f'Cloud authentication error: {e}') # Stop the event bus gracefully, waiting for all events to be processed # Use longer timeout to avoid deadlocks in tests with multiple agents await self.eventbus.stop(timeout=3.0) await self.close() @observe_debug(ignore_input=True, ignore_output=True) @time_execution_async('--multi_act') async def multi_act( self, actions: list[ActionModel], check_for_new_elements: bool = True, ) -> list[ActionResult]: """Execute multiple actions""" results: list[ActionResult] = [] time_elapsed = 0 total_actions = len(actions) assert self.browser_session is not None, 'BrowserSession is not set up' try: if ( self.browser_session._cached_browser_state_summary is not None and self.browser_session._cached_browser_state_summary.dom_state is not None ): cached_selector_map = dict(self.browser_session._cached_browser_state_summary.dom_state.selector_map) cached_element_hashes = {e.parent_branch_hash() for e in cached_selector_map.values()} else: cached_selector_map = {} cached_element_hashes = set() except Exception as e: self.logger.error(f'Error getting cached selector map: {e}') cached_selector_map = {} cached_element_hashes = set() for i, action in enumerate(actions): if i > 0: # ONLY ALLOW TO CALL `done` IF IT IS A SINGLE ACTION if action.model_dump(exclude_unset=True).get('done') is not None: msg = f'Done action is allowed only as a single action - stopped after action {i} / {total_actions}.' self.logger.debug(msg) break # DOM synchronization check - verify element indexes are still valid AFTER first action # This prevents stale element detection but doesn't refresh before execution if action.get_index() is not None and i != 0: new_browser_state_summary = await self.browser_session.get_browser_state_summary( cache_clickable_elements_hashes=False, include_screenshot=False, ) new_selector_map = new_browser_state_summary.dom_state.selector_map # Detect index change after previous action orig_target = cached_selector_map.get(action.get_index()) orig_target_hash = orig_target.parent_branch_hash() if orig_target else None new_target = new_selector_map.get(action.get_index()) # type: ignore new_target_hash = new_target.parent_branch_hash() if new_target else None def get_remaining_actions_str(actions: list[ActionModel], index: int) -> str: remaining_actions = [] for remaining_action in actions[index:]: action_data = remaining_action.model_dump(exclude_unset=True) action_name = next(iter(action_data.keys())) if action_data else 'unknown' remaining_actions.append(action_name) return ', '.join(remaining_actions) if orig_target_hash != new_target_hash: # Get names of remaining actions that won't be executed remaining_actions_str = get_remaining_actions_str(actions, i) msg = f'Page changed after action: actions {remaining_actions_str} are not yet executed' logger.info(msg) results.append( ActionResult( extracted_content=msg, include_in_memory=True, long_term_memory=msg, ) ) break # Check for new elements that appeared new_element_hashes = {e.parent_branch_hash() for e in new_selector_map.values()} if check_for_new_elements and not new_element_hashes.issubset(cached_element_hashes): # next action requires index but there are new elements on the page # log difference in len debug self.logger.debug(f'New elements: {abs(len(new_element_hashes) - len(cached_element_hashes))}') remaining_actions_str = get_remaining_actions_str(actions, i) msg = f'Something new appeared after action {i} / {total_actions}: actions {remaining_actions_str} were not executed' logger.info(msg) results.append( ActionResult( extracted_content=msg, include_in_memory=True, long_term_memory=msg, ) ) break # wait between actions (only after first action) if i > 0: await asyncio.sleep(self.browser_profile.wait_between_actions) red = '\033[91m' green = '\033[92m' cyan = '\033[96m' blue = '\033[34m' reset = '\033[0m' try: await self._raise_if_stopped_or_paused() # Get action name from the action model action_data = action.model_dump(exclude_unset=True) action_name = next(iter(action_data.keys())) if action_data else 'unknown' action_params = getattr(action, action_name, '') or str(action.model_dump(mode='json'))[:140].replace( '"', '' ).replace('{', '').replace('}', '').replace("'", '').strip().strip(',') # Ensure action_params is always a string before checking length action_params = str(action_params) action_params = f'{action_params[:522]}...' if len(action_params) > 528 else action_params time_start = time.time() self.logger.info(f' 🦾 {blue}[ACTION {i + 1}/{total_actions}]{reset} {action_params}') result = await self.tools.act( action=action, browser_session=self.browser_session, file_system=self.file_system, page_extraction_llm=self.settings.page_extraction_llm, sensitive_data=self.sensitive_data, available_file_paths=self.available_file_paths, ) time_end = time.time() time_elapsed = time_end - time_start results.append(result) self.logger.debug( f'β˜‘οΈ Executed action {i + 1}/{total_actions}: {green}{action_params}{reset} in {time_elapsed:.2f}s' ) if results[-1].is_done or results[-1].error or i == total_actions - 1: break except Exception as e: # Handle any exceptions during action execution self.logger.error( f'❌ Executing action {i + 1} failed in {time_elapsed:.2f}s {red}({action_params}) -> {type(e).__name__}: {e}{reset}' ) raise e return results async def log_completion(self) -> None: """Log the completion of the task""" # self._task_end_time = time.time() # self._task_duration = self._task_end_time - self._task_start_time TODO: this is not working when using take_step if self.history.is_successful(): self.logger.info('βœ… Task completed successfully') else: self.logger.info('❌ Task completed without success') async def rerun_history( self, history: AgentHistoryList, max_retries: int = 3, skip_failures: bool = True, delay_between_actions: float = 2.0, ) -> list[ActionResult]: """ Rerun a saved history of actions with error handling and retry logic. Args: history: The history to replay max_retries: Maximum number of retries per action skip_failures: Whether to skip failed actions or stop execution delay_between_actions: Delay between actions in seconds Returns: List of action results """ # Skip cloud sync session events for rerunning (we're replaying, not starting new) self.state.session_initialized = True # Initialize browser session await self.browser_session.start() results = [] for i, history_item in enumerate(history.history): goal = history_item.model_output.current_state.next_goal if history_item.model_output else '' step_num = history_item.metadata.step_number if history_item.metadata else i step_name = 'Initial actions' if step_num == 0 else f'Step {step_num}' self.logger.info(f'Replaying {step_name} ({i + 1}/{len(history.history)}): {goal}') if ( not history_item.model_output or not history_item.model_output.action or history_item.model_output.action == [None] ): self.logger.warning(f'{step_name}: No action to replay, skipping') results.append(ActionResult(error='No action to replay')) continue retry_count = 0 while retry_count < max_retries: try: result = await self._execute_history_step(history_item, delay_between_actions) results.extend(result) break except Exception as e: retry_count += 1 if retry_count == max_retries: error_msg = f'{step_name} failed after {max_retries} attempts: {str(e)}' self.logger.error(error_msg) if not skip_failures: results.append(ActionResult(error=error_msg)) raise RuntimeError(error_msg) else: self.logger.warning(f'{step_name} failed (attempt {retry_count}/{max_retries}), retrying...') await asyncio.sleep(delay_between_actions) await self.close() return results async def _execute_initial_actions(self) -> None: # Execute initial actions if provided if self.initial_actions and not self.state.follow_up_task: self.logger.debug(f'⚑ Executing {len(self.initial_actions)} initial actions...') result = await self.multi_act(self.initial_actions, check_for_new_elements=False) # update result 1 to mention that its was automatically loaded if result and self.initial_url and result[0].long_term_memory: result[0].long_term_memory = f'Found initial url and automatically loaded it. {result[0].long_term_memory}' self.state.last_result = result # Save initial actions to history as step 0 for rerun capability # Skip browser state capture for initial actions (usually just URL navigation) model_output = self.AgentOutput( evaluation_previous_goal='Starting agent with initial actions', memory='', next_goal='Execute initial navigation or setup actions', action=self.initial_actions, ) metadata = StepMetadata( step_number=0, step_start_time=time.time(), step_end_time=time.time(), ) # Create minimal browser state history for initial actions state_history = BrowserStateHistory( url=self.initial_url or '', title='Initial Actions', tabs=[], interacted_element=[None] * len(self.initial_actions), # No DOM elements needed screenshot_path=None, ) history_item = AgentHistory( model_output=model_output, result=result, state=state_history, metadata=metadata, ) self.history.add_item(history_item) self.logger.debug('πŸ“ Saved initial actions to history as step 0') self.logger.debug('Initial actions completed') async def _execute_history_step(self, history_item: AgentHistory, delay: float) -> list[ActionResult]: """Execute a single step from history with element validation""" assert self.browser_session is not None, 'BrowserSession is not set up' state = await self.browser_session.get_browser_state_summary( cache_clickable_elements_hashes=False, include_screenshot=False ) if not state or not history_item.model_output: raise ValueError('Invalid state or model output') updated_actions = [] for i, action in enumerate(history_item.model_output.action): updated_action = await self._update_action_indices( history_item.state.interacted_element[i], action, state, ) updated_actions.append(updated_action) if updated_action is None: raise ValueError(f'Could not find matching element {i} in current page') result = await self.multi_act(updated_actions) await asyncio.sleep(delay) return result async def _update_action_indices( self, historical_element: DOMInteractedElement | None, action: ActionModel, # Type this properly based on your action model browser_state_summary: BrowserStateSummary, ) -> ActionModel | None: """ Update action indices based on current page state. Returns updated action or None if element cannot be found. """ if not historical_element or not browser_state_summary.dom_state.selector_map: return action # selector_hash_map = {hash(e): e for e in browser_state_summary.dom_state.selector_map.values()} highlight_index, current_element = next( ( (highlight_index, element) for highlight_index, element in browser_state_summary.dom_state.selector_map.items() if element.element_hash == historical_element.element_hash ), (None, None), ) if not current_element or highlight_index is None: return None old_index = action.get_index() if old_index != highlight_index: action.set_index(highlight_index) self.logger.info(f'Element moved in DOM, updated index from {old_index} to {highlight_index}') return action async def load_and_rerun(self, history_file: str | Path | None = None, **kwargs) -> list[ActionResult]: """ Load history from file and rerun it. Args: history_file: Path to the history file **kwargs: Additional arguments passed to rerun_history """ if not history_file: history_file = 'AgentHistory.json' history = AgentHistoryList.load_from_file(history_file, self.AgentOutput) return await self.rerun_history(history, **kwargs) def save_history(self, file_path: str | Path | None = None) -> None: """Save the history to a file with sensitive data filtering""" if not file_path: file_path = 'AgentHistory.json' self.history.save_to_file(file_path, sensitive_data=self.sensitive_data) def pause(self) -> None: """Pause the agent before the next step""" print('\n\n⏸️ Paused the agent and left the browser open.\n\tPress [Enter] to resume or [Ctrl+C] again to quit.') self.state.paused = True self._external_pause_event.clear() def resume(self) -> None: """Resume the agent""" # TODO: Locally the browser got closed print('----------------------------------------------------------------------') print('▢️ Resuming agent execution where it left off...\n') self.state.paused = False self._external_pause_event.set() def stop(self) -> None: """Stop the agent""" self.logger.info('⏹️ Agent stopping') self.state.stopped = True # Signal pause event to unblock any waiting code so it can check the stopped state self._external_pause_event.set() # Task stopped def _convert_initial_actions(self, actions: list[dict[str, dict[str, Any]]]) -> list[ActionModel]: """Convert dictionary-based actions to ActionModel instances""" converted_actions = [] action_model = self.ActionModel for action_dict in actions: # Each action_dict should have a single key-value pair action_name = next(iter(action_dict)) params = action_dict[action_name] # Get the parameter model for this action from registry action_info = self.tools.registry.registry.actions[action_name] param_model = action_info.param_model # Create validated parameters using the appropriate param model validated_params = param_model(**params) # Create ActionModel instance with the validated parameters action_model = self.ActionModel(**{action_name: validated_params}) converted_actions.append(action_model) return converted_actions def _verify_and_setup_llm(self): """ Verify that the LLM API keys are setup and the LLM API is responding properly. Also handles tool calling method detection if in auto mode. """ # Skip verification if already done if getattr(self.llm, '_verified_api_keys', None) is True or CONFIG.SKIP_LLM_API_KEY_VERIFICATION: setattr(self.llm, '_verified_api_keys', True) return True @property def message_manager(self) -> MessageManager: return self._message_manager async def close(self): """Close all resources""" try: # Only close browser if keep_alive is False (or not set) if self.browser_session is not None: if not self.browser_session.browser_profile.keep_alive: # Kill the browser session - this dispatches BrowserStopEvent, # stops the EventBus with clear=True, and recreates a fresh EventBus await self.browser_session.kill() # Force garbage collection gc.collect() # Debug: Log remaining threads and asyncio tasks import threading threads = threading.enumerate() self.logger.debug(f'🧡 Remaining threads ({len(threads)}): {[t.name for t in threads]}') # Get all asyncio tasks tasks = asyncio.all_tasks(asyncio.get_event_loop()) # Filter out the current task (this close() coroutine) other_tasks = [t for t in tasks if t != asyncio.current_task()] if other_tasks: self.logger.debug(f'⚑ Remaining asyncio tasks ({len(other_tasks)}):') for task in other_tasks[:10]: # Limit to first 10 to avoid spam self.logger.debug(f' - {task.get_name()}: {task}') else: self.logger.debug('⚑ No remaining asyncio tasks') except Exception as e: self.logger.error(f'Error during cleanup: {e}') async def _update_action_models_for_page(self, page_url: str) -> None: """Update action models with page-specific actions""" # Create new action model with current page's filtered actions self.ActionModel = self.tools.registry.create_action_model(page_url=page_url) # Update output model with the new actions if self.settings.flash_mode: self.AgentOutput = AgentOutput.type_with_custom_actions_flash_mode(self.ActionModel) elif self.settings.use_thinking: self.AgentOutput = AgentOutput.type_with_custom_actions(self.ActionModel) else: self.AgentOutput = AgentOutput.type_with_custom_actions_no_thinking(self.ActionModel) # Update done action model too self.DoneActionModel = self.tools.registry.create_action_model(include_actions=['done'], page_url=page_url) if self.settings.flash_mode: self.DoneAgentOutput = AgentOutput.type_with_custom_actions_flash_mode(self.DoneActionModel) elif self.settings.use_thinking: self.DoneAgentOutput = AgentOutput.type_with_custom_actions(self.DoneActionModel) else: self.DoneAgentOutput = AgentOutput.type_with_custom_actions_no_thinking(self.DoneActionModel) def get_trace_object(self) -> dict[str, Any]: """Get the trace and trace_details objects for the agent""" def extract_task_website(task_text: str) -> str | None: url_pattern = r'https?://[^\s<>"\']+|www\.[^\s<>"\']+|[^\s<>"\']+\.[a-z]{2,}(?:/[^\s<>"\']*)?' match = re.search(url_pattern, task_text, re.IGNORECASE) return match.group(0) if match else None def _get_complete_history_without_screenshots(history_data: dict[str, Any]) -> str: if 'history' in history_data: for item in history_data['history']: if 'state' in item and 'screenshot' in item['state']: item['state']['screenshot'] = None return json.dumps(history_data) # Generate autogenerated fields trace_id = uuid7str() timestamp = datetime.now().isoformat() # Only declare variables that are used multiple times structured_output = self.history.structured_output structured_output_json = json.dumps(structured_output.model_dump()) if structured_output else None final_result = self.history.final_result() git_info = get_git_info() action_history = self.history.action_history() action_errors = self.history.errors() urls = self.history.urls() usage = self.history.usage return { 'trace': { # Autogenerated fields 'trace_id': trace_id, 'timestamp': timestamp, 'browser_use_version': get_browser_use_version(), 'git_info': json.dumps(git_info) if git_info else None, # Direct agent properties 'model': self.llm.model, 'settings': json.dumps(self.settings.model_dump()) if self.settings else None, 'task_id': self.task_id, 'task_truncated': self.task[:20000] if len(self.task) > 20000 else self.task, 'task_website': extract_task_website(self.task), # AgentHistoryList methods 'structured_output_truncated': ( structured_output_json[:20000] if structured_output_json and len(structured_output_json) > 20000 else structured_output_json ), 'action_history_truncated': json.dumps(action_history) if action_history else None, 'action_errors': json.dumps(action_errors) if action_errors else None, 'urls': json.dumps(urls) if urls else None, 'final_result_response_truncated': ( final_result[:20000] if final_result and len(final_result) > 20000 else final_result ), 'self_report_completed': 1 if self.history.is_done() else 0, 'self_report_success': 1 if self.history.is_successful() else 0, 'duration': self.history.total_duration_seconds(), 'steps_taken': self.history.number_of_steps(), 'usage': json.dumps(usage.model_dump()) if usage else None, }, 'trace_details': { # Autogenerated fields (ensure same as trace) 'trace_id': trace_id, 'timestamp': timestamp, # Direct agent properties 'task': self.task, # AgentHistoryList methods 'structured_output': structured_output_json, 'final_result_response': final_result, 'complete_history': _get_complete_history_without_screenshots( self.history.model_dump(sensitive_data=self.sensitive_data) ), }, } async def authenticate_cloud_sync(self, show_instructions: bool = True) -> bool: """ Authenticate with cloud service for future runs. This is useful when users want to authenticate after a task has completed so that future runs will sync to the cloud. Args: show_instructions: Whether to show authentication instructions to user Returns: bool: True if authentication was successful """ if not hasattr(self, 'cloud_sync') or self.cloud_sync is None: self.logger.warning('Cloud sync is not available for this agent') return False return await self.cloud_sync.authenticate(show_instructions=show_instructions) def run_sync( self, max_steps: int = 100, on_step_start: AgentHookFunc | None = None, on_step_end: AgentHookFunc | None = None, ) -> AgentHistoryList[AgentStructuredOutput]: """Synchronous wrapper around the async run method for easier usage without asyncio.""" import asyncio return asyncio.run(self.run(max_steps=max_steps, on_step_start=on_step_start, on_step_end=on_step_end))