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{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_016Z3zsFExJBMugwUbQSjsvt","type":"message","role":"assistant","content":[{"type":"text","text":"Let me open all three pages in parallel."}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":2450,"cache_read_input_tokens":14792,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":2450},"output_tokens":0,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"555aa92e-9c19-4a86-83e4-24fa14970612"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_016Z3zsFExJBMugwUbQSjsvt","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_011GKMM8Pk3Yhkc3iCPFSndA","name":"mcp__chrome-devtools__new_page","input":{"url":"https://en.wikipedia.org/wiki/Rust_(programming_language)","background":true},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":2450,"cache_read_input_tokens":14792,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":2450},"output_tokens":0,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"99af6a26-e294-4534-9ab4-e3a3724c08ef"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_016Z3zsFExJBMugwUbQSjsvt","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01HWZua9fKvBaivjHkZEcpy9","name":"mcp__chrome-devtools__new_page","input":{"url":"https://github.com/rust-lang/rust","background":true},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":2450,"cache_read_input_tokens":14792,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":2450},"output_tokens":0,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"3aaa77bf-c9b8-420a-8f9a-36651c7c6541"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_016Z3zsFExJBMugwUbQSjsvt","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_012sbW22FARzyMJcJxGVmTsz","name":"mcp__chrome-devtools__new_page","input":{"url":"https://www.rust-lang.org/","background":true},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":2450,"cache_read_input_tokens":14792,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":2450},"output_tokens":0,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"8245de35-44fb-4c77-8050-21ce24e83186"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_011GKMM8Pk3Yhkc3iCPFSndA","type":"tool_result","content":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language) [selected]"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"b3f85299-84ba-4d08-ac56-36419357cee0","timestamp":"2026-04-03T10:07:24.757Z","tool_use_result":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language) [selected]"}]}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01HWZua9fKvBaivjHkZEcpy9","type":"tool_result","content":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language)\n3: https://github.com/rust-lang/rust [selected]"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"13bbdb40-65a2-4318-842a-e37ba8553bc6","timestamp":"2026-04-03T10:07:26.598Z","tool_use_result":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language)\n3: https://github.com/rust-lang/rust [selected]"}]}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_012sbW22FARzyMJcJxGVmTsz","type":"tool_result","content":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language)\n3: https://github.com/rust-lang/rust\n4: https://rust-lang.org/ [selected]"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"afd63dc7-bc78-449b-b8e8-4390fac06469","timestamp":"2026-04-03T10:07:26.971Z","tool_use_result":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language)\n3: https://github.com/rust-lang/rust\n4: https://rust-lang.org/ [selected]"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01955fxJrNujbgKQtETsjcqb","type":"message","role":"assistant","content":[{"type":"text","text":"All three pages are open. Now let me extract the relevant info from each in parallel."}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":514,"cache_read_input_tokens":17242,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":514},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"861100c9-cc39-4fe9-a341-ca1a31e7bcae"}
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{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01Ht1BTGhaUUu9Jm2JHdAWPU","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"Now let me select each page and extract the relevant info. I'll need to do them sequentially since I need to select a page before evaluating on it.\n\nActually, let me think about this. The `select_page` + `evaluate_script` needs to be sequential for each page. But I can do all three pages in sequence... or I can try to do them in parallel if they're on different pages.\n\nWait, the issue is that `select_page` changes the \"currently selected page\" which is a shared state. So I can't do them in parallel - they'd interfere with each other.\n\nLet me do them sequentially: select page 2 (Wikipedia), evaluate, then select page 3 (GitHub), evaluate, then select page 4 (rust-lang.org), evaluate.","signature":" "}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":540,"cache_read_input_tokens":17756,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":540},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"00d36e70-501e-47aa-b35e-be14c9dcbc18"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01Ht1BTGhaUUu9Jm2JHdAWPU","type":"message","role":"assistant","content":[{"type":"text","text":"I need to select each page then evaluate — let me do them sequentially."}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":540,"cache_read_input_tokens":17756,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":540},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"0563c2f5-688d-411b-adbe-a11a2163f340"}
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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_017v63gXgXpS7infXaFanaAq","type":"tool_result","content":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language) [selected]\n3: https://github.com/rust-lang/rust\n4: https://rust-lang.org/"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"a6bda215-0a67-47f4-814e-b22b3d1a4889","timestamp":"2026-04-03T10:07:35.224Z","tool_use_result":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language) [selected]\n3: https://github.com/rust-lang/rust\n4: https://rust-lang.org/"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_019SK4587SBDpytP7iJ5DSiE","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01CQN6HZ858y9PEur1xGj2Ea","name":"mcp__chrome-devtools__evaluate_script","input":{"function":"() => {\n  // Look for \"Designed by\" in the infobox\n  const rows = document.querySelectorAll('.infobox-label, .infobox th');\n  for (const row of rows) {\n    if (row.textContent.trim().toLowerCase().includes('designed by')) {\n      const val = row.closest('tr')?.querySelector('.infobox-data, td');\n      if (val) return val.innerText.trim();\n    }\n  }\n  // Fallback: search all th elements\n  const ths = document.querySelectorAll('th');\n  for (const th of ths) {\n    if (th.textContent.trim().toLowerCase().includes('designed by')) {\n      return th.nextElementSibling?.innerText?.trim() || th.closest('tr')?.querySelector('td')?.innerText?.trim();\n    }\n  }\n  return 'Not found';\n}"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":338,"cache_read_input_tokens":18296,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":338},"output_tokens":47,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"f4014e39-d152-4d9e-8381-97c5a55cc3f2"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01CQN6HZ858y9PEur1xGj2Ea","type":"tool_result","content":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"Not found\"\n```"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"707f3e09-976d-44af-a270-f43dcebbab91","timestamp":"2026-04-03T10:07:40.107Z","tool_use_result":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"Not found\"\n```"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01Deqb1wyrBpAaSCbXzssJKD","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"Let me try a different approach for Wikipedia.","signature":"EusBClsIDBgCKkDmHznDf9gPHhsSRa7MKfxjyxl0ZDmJ2Mh0bMqA1wH/ANbGQIKp27ZhAyCIpDYz5n4Cc6/uyvO6g3P57eICyP9nMhFjbGF1ZGUtc29ubmV0LTQtNjgAEgypZ0DSdtxpXIZUhagaDAxcpaF27TVd1xjf8SIw+1ovuup6w20e4kUxDNoYH4PHXewQa/WgCw+qJLsiiGrQefRcEsCI0mQBMBBvrS8PKj5W9qOCtDv935uXSxw3FjfIy2OcRTWrhiPdl9sM/+L+GNzilu7q52sQN02AptCpa8sAflu3n+azfpwuT6rqahgB"}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":413,"cache_read_input_tokens":18634,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":413},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"a0b9369f-150c-4019-8d17-e83c78f09aee"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01Deqb1wyrBpAaSCbXzssJKD","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_017oW9xfw3RGS7McLkvt3NBo","name":"mcp__chrome-devtools__evaluate_script","input":{"function":"() => {\n  // Try all table rows in infoboxes\n  const rows = document.querySelectorAll('table.infobox tr');\n  for (const row of rows) {\n    const th = row.querySelector('th');\n    const td = row.querySelector('td');\n    if (th && td && th.textContent.includes('Designed')) {\n      return td.innerText.trim();\n    }\n  }\n  // Dump all infobox th text to debug\n  return Array.from(document.querySelectorAll('table.infobox tr th')).map(e => e.textContent.trim()).join(' | ');\n}"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":413,"cache_read_input_tokens":18634,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":413},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"77f70d2e-8058-4c16-9fc7-f95dbe70ab30"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_017oW9xfw3RGS7McLkvt3NBo","type":"tool_result","content":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"Rust | Paradigms | Developer | First appeared | Stable release | Typing discipline | Implementation language | Platform | OS | License | Filename extensions | Website | Influenced by | Influenced | Formation | Founders | Type | Location | Chairperson | Executive Director | Website\"\n```"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"7ce7fec0-c9c3-4093-87e8-08d9df5e9dcb","timestamp":"2026-04-03T10:07:44.513Z","tool_use_result":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"Rust | Paradigms | Developer | First appeared | Stable release | Typing discipline | Implementation language | Platform | OS | License | Filename extensions | Website | Influenced by | Influenced | Formation | Founders | Type | Location | Chairperson | Executive Director | Website\"\n```"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01XZMjBnXWVXYHNnrokZM3UF","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"The infobox has \"Developer\" not \"Designed by\". Let me search for \"Developer\" instead.","signature":"EpICClsIDBgCKkBzr/m62Z582iuYy41jewlgcc82Y/5Q30WJ8+rF2gxDrmIsPQMZ4inY6OOd3aNRSJJ5eA9cMi2EXprCFOycXDFsMhFjbGF1ZGUtc29ubmV0LTQtNjgAEgxMjbvXKPTTpzywyegaDCxAHplZf9HMpNbHgSIwUKDey7nG1wDmTSper6dgzg0iaTqtcgPC/BMeVm0D/DylMgtbiYhjUOlIQRNhDecoKmUr7goOx3Nig0K41z2TqH6tdCAvnAU3BYW0W3ARo0vfvRnX1Qzgkn8QrO4/AgDDM/OJ52yOzDPffqiI7ZtxB3nzIMlf/IlDVQe8NglX6wgU5ZH7WyrxWL/E3n3vJ1OgQEjd6p9irBgB"}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":327,"cache_read_input_tokens":19047,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":327},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"45da4c87-bbec-4a37-9d2f-39b0b59d13f3"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01XZMjBnXWVXYHNnrokZM3UF","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01B1qZrdTKbMDwwYEczWsKmy","name":"mcp__chrome-devtools__evaluate_script","input":{"function":"() => {\n  const rows = document.querySelectorAll('table.infobox tr');\n  for (const row of rows) {\n    const th = row.querySelector('th');\n    const td = row.querySelector('td');\n    if (th && td && th.textContent.trim() === 'Developer') {\n      return td.innerText.trim();\n    }\n  }\n  return 'Not found';\n}"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":327,"cache_read_input_tokens":19047,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":327},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"e655b33a-9831-4c8e-ae40-9482e8fb07c4"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01B1qZrdTKbMDwwYEczWsKmy","type":"tool_result","content":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"The Rust Team\"\n```"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"7f86d989-59e6-4719-beb5-c3d24b497445","timestamp":"2026-04-03T10:07:47.773Z","tool_use_result":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"The Rust Team\"\n```"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_013A9UAspbsWdrBFjcJg2Wiu","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"Hmm, that gives \"The Rust Team\". Let me also look for who originally designed it. Let me search the article text for \"designed by\" or look for the original designer.\n\nLet me also check for \"Founders\" since I saw that in the infobox.","signature":" "}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":229,"cache_read_input_tokens":19374,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":229},"output_tokens":28,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"a27cff35-3b32-415d-adab-c0dc3ee0d415"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_013A9UAspbsWdrBFjcJg2Wiu","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01995W7JEpdpSPdXE2TXbnaQ","name":"mcp__chrome-devtools__evaluate_script","input":{"function":"() => {\n  const rows = document.querySelectorAll('table.infobox tr');\n  const results = {};\n  for (const row of rows) {\n    const th = row.querySelector('th');\n    const td = row.querySelector('td');\n    if (th && td) {\n      const key = th.textContent.trim();\n      if (['Developer', 'Founders', 'First appeared'].includes(key)) {\n        results[key] = td.innerText.trim();\n      }\n    }\n  }\n  // Also check intro paragraph for \"designed by\"\n  const intro = document.querySelector('#mw-content-text p');\n  results['intro'] = intro?.innerText?.trim().substring(0, 300);\n  return results;\n}"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":229,"cache_read_input_tokens":19374,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":229},"output_tokens":28,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"a1630a3a-eb3f-4839-839f-3d9ab7801048"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01995W7JEpdpSPdXE2TXbnaQ","type":"tool_result","content":[{"type":"text","text":"Script ran on page and returned:\n```json\n{\"Developer\":\"The Rust Team\",\"Founders\":\"Amazon Web Services\\nGoogle\\nHuawei\\nMicrosoft\\nMozilla Foundation\",\"intro\":\"\"}\n```"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"ec6ae013-9597-4f75-80f0-bcb4ecc27276","timestamp":"2026-04-03T10:07:52.975Z","tool_use_result":[{"type":"text","text":"Script ran on page and returned:\n```json\n{\"Developer\":\"The Rust Team\",\"Founders\":\"Amazon Web Services\\nGoogle\\nHuawei\\nMicrosoft\\nMozilla Foundation\",\"intro\":\"\"}\n```"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01UXLUtz5VkkXdvZUmnaw6S5","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_019kmKNBcqsCGJW6iTXoRUnn","name":"mcp__chrome-devtools__evaluate_script","input":{"function":"() => {\n  // Get first non-empty paragraph\n  const paras = document.querySelectorAll('#mw-content-text .mw-parser-output > p');\n  for (const p of paras) {\n    const text = p.innerText.trim();\n    if (text.length > 50) return text.substring(0, 500);\n  }\n  return 'Not found';\n}"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":380,"cache_read_input_tokens":19603,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":380},"output_tokens":47,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"1ea334c9-3d2b-4a37-b8a3-ea1a7ba1a1d0"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_019kmKNBcqsCGJW6iTXoRUnn","type":"tool_result","content":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"Rust is a general-purpose programming language. It is noted for its emphasis on performance, type safety, concurrency, and memory safety.\"\n```"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"b73feaa9-fd4f-4466-b761-7b74ca857b9b","timestamp":"2026-04-03T10:07:56.158Z","tool_use_result":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"Rust is a general-purpose programming language. It is noted for its emphasis on performance, type safety, concurrency, and memory safety.\"\n```"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01NoHQZcWLJtqmWiYLZ8Yk2Z","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"The intro doesn't mention \"designed by\". Let me search for who originally created/designed Rust. I know it was Graydon Hoare. Let me search the page text for that.","signature":"EuECClsIDBgCKkBY/ak75mpEnswp37IIUHnVj75KvBwuutZS7D/edKz6eLwpEBkmQhYoMfhwTeKbICtcbuzEw6I0cgoBKMKhhhagMhFjbGF1ZGUtc29ubmV0LTQtNjgAEgwLpWS3Kqjtk5VkCIQaDBLFNbbBNceF929C7CIwOfPr0U3X1pWJT+QDCxjQqvSTWYLXJS/MWqYcr8fCR85JAfMnJu+3G2O8j2Qz4jgoKrMBkJ+s3NQiSzhZBWFFltJVslWBRM0U3VtjbAy1WfuxyuZpLZTOFE1kjsr/TmI9qYE8S4w+3mS5X3+exCiAdrRpBMdp9hJ60VBMP3De5jHveflsRKk0mwhETHTM/CGDeXCBQEiLWfoMOMunnTWWKP9i8ItBTrRMxfrpEV5ZvhLUXtBdBjAJPSrI2J3h+YAyZp3QkR167mh1OIH9Ysa35KpwygbzLeaMpFJ62cD2NjXcr/deazAYAQ=="}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":212,"cache_read_input_tokens":19983,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":212},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"1186a072-1dc6-4ac5-8e8e-410c2d397d3d"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01NoHQZcWLJtqmWiYLZ8Yk2Z","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01BqKopu9C9JW4wqtdJwyWmK","name":"mcp__chrome-devtools__evaluate_script","input":{"function":"() => {\n  const paras = document.querySelectorAll('#mw-content-text .mw-parser-output > p');\n  for (const p of paras) {\n    const text = p.innerText.trim();\n    if (text.toLowerCase().includes('graydon') || text.toLowerCase().includes('designed') || text.toLowerCase().includes('created by')) {\n      return text.substring(0, 500);\n    }\n  }\n  return 'Not found';\n}"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":212,"cache_read_input_tokens":19983,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":212},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"2b6d442e-626b-45c9-b017-b361b10408cc"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01BqKopu9C9JW4wqtdJwyWmK","type":"tool_result","content":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"Software developer Graydon Hoare created Rust in 2006 while working at Mozilla, which officially sponsored the project in 2009. The first stable release, Rust 1.0, was published in May 2015. Following a layoff of Mozilla employees in August 2020, four other companies joined Mozilla in sponsoring Rust through the creation of the Rust Foundation in February 2021.\"\n```"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"0c7fa20f-c26f-44c9-9bdf-3cc1a7674d50","timestamp":"2026-04-03T10:08:00.380Z","tool_use_result":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"Software developer Graydon Hoare created Rust in 2006 while working at Mozilla, which officially sponsored the project in 2009. The first stable release, Rust 1.0, was published in May 2015. Following a layoff of Mozilla employees in August 2020, four other companies joined Mozilla in sponsoring Rust through the creation of the Rust Foundation in February 2021.\"\n```"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01Qx9WEf4mZgG783e9ZtdxCV","type":"message","role":"assistant","content":[{"type":"text","text":"Wikipedia confirms the designer. Now let me get GitHub and rust-lang.org."}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":348,"cache_read_input_tokens":20195,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":348},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"a6bb6cd3-c409-48d7-aa99-ea7360de956a"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01Qx9WEf4mZgG783e9ZtdxCV","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01TiQ9xSrvaUduGPzScqPSWo","name":"mcp__chrome-devtools__select_page","input":{"pageId":3},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":348,"cache_read_input_tokens":20195,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":348},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"2493977a-0ba9-449e-8e9c-df5c6efadfeb"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01TiQ9xSrvaUduGPzScqPSWo","type":"tool_result","content":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language)\n3: https://github.com/rust-lang/rust [selected]\n4: https://rust-lang.org/"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"7c21970d-d136-4b40-ba47-52048cc2fb6a","timestamp":"2026-04-03T10:08:02.901Z","tool_use_result":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language)\n3: https://github.com/rust-lang/rust [selected]\n4: https://rust-lang.org/"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01R4tsaRyww8ugnnLiPWVy8f","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01CDmpSYysSjAdKmoFj832jD","name":"mcp__chrome-devtools__evaluate_script","input":{"function":"() => {\n  // GitHub star count\n  const starEl = document.querySelector('#repo-stars-counter-star, [aria-label*=\"star\"], .Counter');\n  // Try the star button area\n  const starBtn = document.querySelector('a[href*=\"/stargazers\"]');\n  if (starBtn) {\n    return starBtn.innerText.trim();\n  }\n  return 'Not found';\n}"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":148,"cache_read_input_tokens":20543,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":148},"output_tokens":52,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"4d80e3fd-8b1b-4158-a8bd-4c30cd7bf146"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01CDmpSYysSjAdKmoFj832jD","type":"tool_result","content":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"112k stars\"\n```"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"6210869f-6191-49d9-9742-3225a27277cc","timestamp":"2026-04-03T10:08:06.943Z","tool_use_result":[{"type":"text","text":"Script ran on page and returned:\n```json\n\"112k stars\"\n```"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01JRfkUKg9aMtV9JPFY1xrkY","type":"message","role":"assistant","content":[{"type":"text","text":"Now rust-lang.org:"}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":187,"cache_read_input_tokens":20691,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":187},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"41dd3509-0477-4e94-a32e-f1e34973f658"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01JRfkUKg9aMtV9JPFY1xrkY","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_016P6frsUShycUgNpaWjjXx7","name":"mcp__chrome-devtools__select_page","input":{"pageId":4},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":187,"cache_read_input_tokens":20691,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":187},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"59cd9237-01fa-49bf-992c-288ab110812c"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_016P6frsUShycUgNpaWjjXx7","type":"tool_result","content":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language)\n3: https://github.com/rust-lang/rust\n4: https://rust-lang.org/ [selected]"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"4d441131-0906-4800-ac7c-a128a67a7fb5","timestamp":"2026-04-03T10:08:08.955Z","tool_use_result":[{"type":"text","text":"## Pages\n1: about:blank\n2: https://en.wikipedia.org/wiki/Rust_(programming_language)\n3: https://github.com/rust-lang/rust\n4: https://rust-lang.org/ [selected]"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01RBT1gmSJ1YG7JQ4fVfQo88","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_013qZdGdRcBn69eEteCoM7wt","name":"mcp__chrome-devtools__evaluate_script","input":{"function":"() => {\n  // Get the main tagline/hero text\n  const h1 = document.querySelector('h1');\n  const tagline = document.querySelector('.tagline, .hero-tagline, [class*=\"tagline\"]');\n  const heroText = document.querySelector('header p, .hero p, main h1, main h2');\n  return {\n    h1: h1?.innerText?.trim(),\n    tagline: tagline?.innerText?.trim(),\n    heroText: heroText?.innerText?.trim(),\n    title: document.title\n  };\n}"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":3,"cache_creation_input_tokens":244,"cache_read_input_tokens":20878,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":244},"output_tokens":5,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"da1fb904-56a2-4e1e-8085-739bd0d8d40c"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_013qZdGdRcBn69eEteCoM7wt","type":"tool_result","content":[{"type":"text","text":"Script ran on page and returned:\n```json\n{\"h1\":\"Rust\",\"heroText\":\"Rust\",\"title\":\"Rust Programming Language\"}\n```"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"0b8a3b4c-1a7c-431f-8b13-5559647fc531","timestamp":"2026-04-03T10:08:12.961Z","tool_use_result":[{"type":"text","text":"Script ran on page and returned:\n```json\n{\"h1\":\"Rust\",\"heroText\":\"Rust\",\"title\":\"Rust Programming Language\"}\n```"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01LszDsTh6UuMg1UApXNw3s6","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01W5v1esXAoj4fnGa5PCgUT6","name":"mcp__chrome-devtools__evaluate_script","input":{"function":"() => {\n  // Get all visible text near the top of the page\n  const els = document.querySelectorAll('header *, .hero *, section:first-of-type *');\n  const texts = [];\n  for (const el of els) {\n    const text = el.innerText?.trim();\n    if (text && text.length > 10 && text.length < 300 && el.children.length === 0) {\n      texts.push(text);\n    }\n  }\n  return [...new Set(texts)].slice(0, 10);\n}"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":242,"cache_read_input_tokens":21122,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":242},"output_tokens":49,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"5a15a39f-1060-42a7-b28f-60d38503792a"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01W5v1esXAoj4fnGa5PCgUT6","type":"tool_result","content":[{"type":"text","text":"Script ran on page and returned:\n```json\n[\"GET STARTED\",\"Version 1.94.1\",\"Performance\",\"Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and easily integrate with other languages.\",\"Reliability\",\"Rust’s rich type system and ownership model guarantee memory-safety and thread-safety — enabling you to eliminate many classes of bugs at compile-time.\",\"Productivity\",\"Rust has great documentation, a friendly compiler with useful error messages, and top-notch tooling — an integrated package manager and build tool, smart multi-editor support with auto-completion and type inspections, an auto-formatter, and more.\",\"Build it in Rust\",\"Rust in production\"]\n```"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"e3c92a24-a841-405c-af01-c966104ad26f","timestamp":"2026-04-03T10:08:16.567Z","tool_use_result":[{"type":"text","text":"Script ran on page and returned:\n```json\n[\"GET STARTED\",\"Version 1.94.1\",\"Performance\",\"Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and easily integrate with other languages.\",\"Reliability\",\"Rust’s rich type system and ownership model guarantee memory-safety and thread-safety — enabling you to eliminate many classes of bugs at compile-time.\",\"Productivity\",\"Rust has great documentation, a friendly compiler with useful error messages, and top-notch tooling — an integrated package manager and build tool, smart multi-editor support with auto-completion and type inspections, an auto-formatter, and more.\",\"Build it in Rust\",\"Rust in production\"]\n```"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_013qTRxDrawJNzsnggYxv7DL","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01FS3UobV2ZSPKeZ16VG9Aii","name":"mcp__chrome-devtools__evaluate_script","input":{"function":"() => {\n  // Find the subtitle under the main \"Rust\" heading\n  const main = document.querySelector('main, #main-content, .home');\n  const allText = main?.querySelectorAll('p, h2, h3, .subtitle, .pitch');\n  const results = [];\n  if (allText) {\n    for (const el of allText) {\n      const text = el.innerText?.trim();\n      if (text && text.length > 20 && text.length < 200) {\n        results.push({ tag: el.tagName, text });\n        if (results.length >= 5) break;\n      }\n    }\n  }\n  return results;\n}"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":377,"cache_read_input_tokens":21364,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":377},"output_tokens":50,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"1fb31d0e-e899-4b21-8588-20a6e8f575af"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01FS3UobV2ZSPKeZ16VG9Aii","type":"tool_result","content":[{"type":"text","text":"Script ran on page and returned:\n```json\n[{\"tag\":\"H2\",\"text\":\"A language empowering everyone\\nto build reliable and efficient software.\"},{\"tag\":\"P\",\"text\":\"Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and easily integrate with other languages.\"},{\"tag\":\"P\",\"text\":\"Rust’s rich type system and ownership model guarantee memory-safety and thread-safety — enabling you to eliminate many classes of bugs at compile-time.\"},{\"tag\":\"P\",\"text\":\"Whip up a CLI tool quickly with Rust’s robust ecosystem. Rust helps you maintain your app with confidence and distribute it with ease.\"},{\"tag\":\"P\",\"text\":\"Use Rust to supercharge your JavaScript, one module at a time. Publish to npm, bundle with webpack, and you’re off to the races.\"}]\n```"}]}]},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"e1c065d0-0115-47e0-b2ef-668355fe114a","timestamp":"2026-04-03T10:08:20.396Z","tool_use_result":[{"type":"text","text":"Script ran on page and returned:\n```json\n[{\"tag\":\"H2\",\"text\":\"A language empowering everyone\\nto build reliable and efficient software.\"},{\"tag\":\"P\",\"text\":\"Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and easily integrate with other languages.\"},{\"tag\":\"P\",\"text\":\"Rust’s rich type system and ownership model guarantee memory-safety and thread-safety — enabling you to eliminate many classes of bugs at compile-time.\"},{\"tag\":\"P\",\"text\":\"Whip up a CLI tool quickly with Rust’s robust ecosystem. Rust helps you maintain your app with confidence and distribute it with ease.\"},{\"tag\":\"P\",\"text\":\"Use Rust to supercharge your JavaScript, one module at a time. Publish to npm, bundle with webpack, and you’re off to the races.\"}]\n```"}]}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01LUjN3CVRN3aswHsYGvJb2Y","type":"message","role":"assistant","content":[{"type":"text","text":"Here are the results from all three sites:\n\n---\n\n### 1. Wikipedia — Who designed Rust?\n**Graydon Hoare** created Rust in 2006 while working at Mozilla, which officially sponsored the project in 2009.\n\n---\n\n### 2. GitHub (`rust-lang/rust`) — Star count\n**112k stars**\n\n---\n\n### 3. rust-lang.org — Tagline / main description\n> **\"A language empowering everyone to build reliable and efficient software.\"**"}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":439,"cache_read_input_tokens":21741,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":439},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","uuid":"55f0c9d0-02e0-4cf7-9aaa-bee03d2af3e9"}
{"type":"result","subtype":"success","is_error":false,"duration_ms":66543,"duration_api_ms":61655,"num_turns":19,"result":"Here are the results from all three sites:\n\n---\n\n### 1. Wikipedia — Who designed Rust?\n**Graydon Hoare** created Rust in 2006 while working at Mozilla, which officially sponsored the project in 2009.\n\n---\n\n### 2. GitHub (`rust-lang/rust`) — Star count\n**112k stars**\n\n---\n\n### 3. rust-lang.org — Tagline / main description\n> **\"A language empowering everyone to build reliable and efficient software.\"**","stop_reason":"end_turn","session_id":"e7b6665d-f715-4eb1-b129-2e880c71268b","total_cost_usd":0.20125095,"usage":{"input_tokens":26,"cache_creation_input_tokens":15033,"cache_read_input_tokens":319864,"output_tokens":3256,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":15033,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"},"modelUsage":{"claude-sonnet-4-6":{"inputTokens":26,"outputTokens":3256,"cacheReadInputTokens":319864,"cacheCreationInputTokens":15033,"webSearchRequests":0,"costUSD":0.20125095,"contextWindow":200000,"maxOutputTokens":32000}},"permission_denials":[],"fast_mode_state":"off","uuid":"61f711f0-b59d-4c75-bda0-342a59d17982"}
