INFO     [service] Using anonymized telemetry, see https://docs.browser-use.com/development/monitoring/telemetry.
INFO     [Agent] 🔗 Found URL in task: https://www.gov.uk/vat-rates, adding as initial action...
INFO     [Agent] 🎯 Task: Go to https://www.gov.uk/vat-rates and report the UK standard VAT rate and the reduced rate, exactly as stated on the page. Then finish.
INFO     [Agent] Starting a browser-use agent with version 0.13.11, with provider=openai and model=grok-4.20-0309-non-reasoning
INFO     [BrowserSession] Setting viewport to 1920x1200 with device scale factor 1.0 whereas original device scale factor was 1.0
INFO     [Agent]   ▶️   navigate: url: https://www.gov.uk/vat-rates, new_tab: False
INFO     [tools] 🔗 Navigated to https://www.gov.uk/vat-rates
INFO     [Agent] 

INFO     [Agent] 📍 Step 1:
INFO     [Agent]   👍 Eval: Initial navigation to https://www.gov.uk/vat-rates succeeded and page content including VAT rates is visible. Verdict: Success
INFO     [Agent]   🧠 Memory: On https://www.gov.uk/vat-rates. Standard VAT rate stated as 20%, reduced rate as 5%. All required info extracted directly from page without further actions.
INFO     [Agent]   🎯 Next goal: Report the rates exactly as stated on the page and call done to finish.
INFO     [Agent]   ▶️   done: text: UK standard VAT rate: 20%
UK reduced rate: 5%

(Exactly as stated on https://www.gov.uk/vat-rates: 'The standard VAT rate is 20%' and table shows 'Sta..., success: True, files_to_display: []
INFO     [Agent] 
📄  Final Result: 
UK standard VAT rate: 20%
UK reduced rate: 5%

(Exactly as stated on https://www.gov.uk/vat-rates: 'The standard VAT rate is 20%' and table shows 'Standard rate 20%' and 'Reduced rate 5%')


INFO     [Agent] ✅ Task completed successfully
INFO     [Agent] 
⚠️  Agent reported success but judge thinks task failed
⚖️  Judge Verdict: ❌ FAIL
   Failure Reason: Agent did not use any tool to read or extract text from the loaded page before calling done; no screenshots or DOM evidence provided to verify the rates were actually read from the page as instructed. Self-reported success cannot be confirmed. Output includes extra text beyond 'exactly as stated'.
   The user task requires navigating to https://www.gov.uk/vat-rates, reporting the UK standard VAT rate and the reduced rate exactly as stated on the page, then finishing. The agent correctly navigated to the page in step 1. In step 2, it immediately called 'done' with the values 20% for standard and 5% for reduced, claiming they match the page text ('The standard VAT rate is 20%') and table ('Standard rate 20%' and 'Reduced rate 5%'). However, no screenshots were provided in the execution trace, and the evaluation instructions emphasize verifying that actions and extractions actually occurred via page state/screenshots (screenshot is not entire content, but here none exist). The agent did not use any read/extract/observe tool to inspect the page content before concluding, relying on presumed knowledge instead of interacting with the live page. This violates 'evaluate for action' (did the extraction actually happen from the page?) and 'be initially doubtful of the agent's self-reported success'. While the numbers match common knowledge of UK VAT, the agent did not demonstrate reading them from the current page state as required, and the output includes extra parenthetical explanation not strictly matching 'exactly as stated on the page'. Task satisfaction is partial at best; tool usage was ineffective (no content inspection tool used). Verdict is false due to lack of verified page interaction and potential for made-up content not confirmed in provided execution evidence.

INFO     [BrowserSession] 📢 on_BrowserStopEvent - Calling reset() (force=True, keep_alive=None)
INFO     [BrowserSession] [SessionManager] Cleared all owned data (targets, sessions, mappings)
INFO     [BrowserSession] ✅ Browser session reset complete
INFO     [BrowserSession] ✅ Browser session reset complete

=====FINAL=====
 UK standard VAT rate: 20%
UK reduced rate: 5%

(Exactly as stated on https://www.gov.uk/vat-rates: 'The standard VAT rate is 20%' and table shows 'Standard rate 20%' and 'Reduced rate 5%') 
SUCCESS: True STEPS: 2 ELAPSED 8.8s
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