Fix browser agent stability: GPT-5 timeout guardrails and network capture cleanup#167
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January 17, 2026 16:22
…system tools - Add debug logging to browser_task_tool.py to trace timeout issues: - Log agent configuration (max_failures, step_timeout, llm_timeout) before run - Log completion state (consecutive_failures, is_done, is_successful) after run - Warn when agent exits with 3+ consecutive failures - Remove duplicate file_read/file_write from browser_use_adapter.py: - Browser-use already provides built-in write_file, read_file, replace_file - Removed tempo-sec duplicates to avoid confusion - Shell tool can be used for Docker container file operations if needed
- Add _parse_env_int() helper with validation and warning for invalid values - Log when GPT-5 guardrails are applied for operational visibility - Document TEMPO_BROWSER_USE_* env vars in config.example.toml
nwang783
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Summary
This PR addresses browser agent stability issues, specifically GPT-5 model timeouts that were causing browser tasks to fail prematurely.
Changes
1. Remove broken
filter_typeparameter (745dd6f)filter_typeparameter fromget_network_requeststoolbrowser_base.txtprompt templatenetwork_capture.pyandbrowser_use_adapter.py2. Add GPT-5 timeout guardrails (7ec86d4)
TEMPO_BROWSER_USE_LLM_TIMEOUT: LLM response timeout (seconds)TEMPO_BROWSER_USE_MAX_FAILURES: Max consecutive failures before abortTEMPO_BROWSER_USE_MAX_HISTORY_ITEMS: Cap on conversation history itemsTEMPO_BROWSER_USE_MAX_COMPLETION_TOKENS: Max tokens for LLM response3. Add validation and documentation (1566156)
_parse_env_int()helper with input validation and clear warning messagesconfig.example.tomlTesting
Files Changed
tempo/agents/browser.py- Added stability settings with validationtempo/infra/browser_use_llm.py- Added max_completion_tokens supporttempo/tools/browser_task_tool.py- Removed debug loggingtempo/tools/network_capture.py- Removed filter_type parametertempo/tools/browser_use_adapter.py- Removed filter_type parametertempo/prompts/templates/browser_base.txt- Updated documentationconfig.example.toml- Documented new environment variables