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{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01GgqhwpDPRvai67tadrTS6h","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"Let me use the dev-browser to navigate to these URLs.","signature":"EvIBClsIDBgCKkCSDEGURTuBdqT7kPRh9yG9Jz3ykUatVR/wK2tss+kwsXayf1vpjMFD9l0aoYDXV8nkJLQJO56PUgl6Xwr+JQl2MhFjbGF1ZGUtc29ubmV0LTQtNjgAEgzZBeUJ8UixecCBRbEaDH+ArUs9HMLG+lQh0iIwRru5MYHqmTNUi1OaBS1h2jPPOGQdr7pC+0H2K0U8Gmig/qB9owcJDuZWHMqvpEuEKkWd3A11RsgGD2chGvjxwwWGg2GOAufNgW8M3VNdPRAKkAnoxU/q786bQkUxPXUGGllL80rh+vC2qzxMo0ZYjyNMAqhKi2wYAQ=="}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":7295,"cache_read_input_tokens":8603,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":7295},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"c8015e9c-0ae8-47b9-971f-91d5d33a9e80","uuid":"602bbe55-d0a9-4e3a-babd-82b494794109"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01GgqhwpDPRvai67tadrTS6h","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01K6PCJiqfumseqb1KcdDjty","name":"Bash","input":{"command":"cat > /tmp/navigate_404.js << 'EOF'\nconst page = await browser.newPage();\n\n// Navigate to 404 URL\nconsole.log(\"Navigating to https://httpbin.org/status/404...\");\nconst response1 = await page.goto(\"https://httpbin.org/status/404\");\nconsole.log(\"Status code:\", response1.status());\nconst body1 = await page.content();\nconsole.log(\"Page content:\", body1.substring(0, 500));\n\n// Navigate to working page\nconsole.log(\"\\nNavigating to https://httpbin.org/html...\");\nconst response2 = await page.goto(\"https://httpbin.org/html\");\nconsole.log(\"Status code:\", response2.status());\nconst body2 = await page.content();\nconsole.log(\"Page content:\", body2.substring(0, 1000));\n\nawait page.close();\nEOF\ndev-browser --headless --browser axi-bench-dev-browser-navigate_404-run1 run /tmp/navigate_404.js","description":"Navigate to 404 URL then working URL"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":7295,"cache_read_input_tokens":8603,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":7295},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"c8015e9c-0ae8-47b9-971f-91d5d33a9e80","uuid":"9ab3fb01-2eab-4bde-9553-ccb8d7cf6393"}
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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01K6PCJiqfumseqb1KcdDjty","type":"tool_result","content":"Navigating to https://httpbin.org/status/404...\nStatus code: 404\nPage content: <html><head></head><body></body></html>\n\nNavigating to https://httpbin.org/html...\nStatus code: 200\nPage content: <!DOCTYPE html><html><head>\n  </head>\n  <body>\n      <h1>Herman Melville - Moby-Dick</h1>\n\n      <div>\n        <p>\n          Availing himself of the mild, summer-cool weather that now reigned in these latitudes, and in preparation for the peculiarly active pursuits shortly to be anticipated, Perth, the begrimed, blistered old blacksmith, had not removed his portable forge to the hold again, after concluding his contributory work for Ahab's leg, but still retained it on deck, fast lashed to ringbolts by the foremast; being now almost incessantly invoked by the headsmen, and harpooneers, and bowsmen to do some little job for them; altering, or repairing, or new shaping their various weapons and boat furniture. Often he would be surrounded by an eager circle, all waiting to be served; holding boat-spades, pike-heads, harpoons, and lances, and jealously watching his every sooty movement, as he toiled. Nevertheless, this old man's was a patient hammer wielded by a patient arm. No murmur, no","is_error":false}]},"parent_tool_use_id":null,"session_id":"c8015e9c-0ae8-47b9-971f-91d5d33a9e80","uuid":"6f422bdd-2460-4b4a-a001-efd5b97be6de","timestamp":"2026-04-03T09:16:42.611Z","tool_use_result":{"stdout":"Navigating to https://httpbin.org/status/404...\nStatus code: 404\nPage content: <html><head></head><body></body></html>\n\nNavigating to https://httpbin.org/html...\nStatus code: 200\nPage content: <!DOCTYPE html><html><head>\n  </head>\n  <body>\n      <h1>Herman Melville - Moby-Dick</h1>\n\n      <div>\n        <p>\n          Availing himself of the mild, summer-cool weather that now reigned in these latitudes, and in preparation for the peculiarly active pursuits shortly to be anticipated, Perth, the begrimed, blistered old blacksmith, had not removed his portable forge to the hold again, after concluding his contributory work for Ahab's leg, but still retained it on deck, fast lashed to ringbolts by the foremast; being now almost incessantly invoked by the headsmen, and harpooneers, and bowsmen to do some little job for them; altering, or repairing, or new shaping their various weapons and boat furniture. Often he would be surrounded by an eager circle, all waiting to be served; holding boat-spades, pike-heads, harpoons, and lances, and jealously watching his every sooty movement, as he toiled. Nevertheless, this old man's was a patient hammer wielded by a patient arm. No murmur, no","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false}}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01LzBspAyfkubzAaNYwLY7Kg","type":"message","role":"assistant","content":[{"type":"text","text":"Here's what I found:\n\n**https://httpbin.org/status/404**\n- Encountered a **404 Not Found** error (HTTP status code 404)\n- The page body was empty — no content, just a bare `<html><head></head><body></body></html>`\n\n**https://httpbin.org/html**\n- Successfully loaded with **HTTP 200 OK**\n- Page contains an excerpt from **Herman Melville's Moby-Dick**, describing the blacksmith Perth working on deck, surrounded by crew members waiting for him to repair their weapons and boat equipment\n\nBrowsing works normally after the 404 — the error was isolated to that specific endpoint."}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":693,"cache_read_input_tokens":15898,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":693},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"c8015e9c-0ae8-47b9-971f-91d5d33a9e80","uuid":"d522e3fa-0058-4220-ba13-6bbde1546d30"}
{"type":"result","subtype":"success","is_error":false,"duration_ms":13773,"duration_api_ms":10873,"num_turns":2,"result":"Here's what I found:\n\n**https://httpbin.org/status/404**\n- Encountered a **404 Not Found** error (HTTP status code 404)\n- The page body was empty — no content, just a bare `<html><head></head><body></body></html>`\n\n**https://httpbin.org/html**\n- Successfully loaded with **HTTP 200 OK**\n- Page contains an excerpt from **Herman Melville's Moby-Dick**, describing the blacksmith Perth working on deck, surrounded by crew members waiting for him to repair their weapons and boat equipment\n\nBrowsing works normally after the 404 — the error was isolated to that specific endpoint.","stop_reason":"end_turn","session_id":"c8015e9c-0ae8-47b9-971f-91d5d33a9e80","total_cost_usd":0.0449193,"usage":{"input_tokens":3,"cache_creation_input_tokens":7988,"cache_read_input_tokens":24501,"output_tokens":507,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":7988,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"},"modelUsage":{"claude-sonnet-4-6":{"inputTokens":3,"outputTokens":507,"cacheReadInputTokens":24501,"cacheCreationInputTokens":7988,"webSearchRequests":0,"costUSD":0.0449193,"contextWindow":200000,"maxOutputTokens":32000}},"permission_denials":[],"fast_mode_state":"off","uuid":"91e0c46f-9d3a-430d-9da6-e2c45de3a15a"}
