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{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01DLm9PYH1YQdsduDtNGDnku","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"Let me research Rust across three sites using the dev-browser CLI.","signature":"Ev8BClsIDBgCKkC2G/T/uDy13UqSpmXOGfbRVza1Fq1f8T7Qb5e1ENVbRSfuveXmpkmNei3lpecMT3dlBZowtvWup4rQp85NEw81MhFjbGF1ZGUtc29ubmV0LTQtNjgAEgwjjH1H61qWWrWG+X4aDK30zstu6weTYxynkSIwgLkZg2bkEaeKtmcjLRuCMOP8K5wccfQQJHtxp2uJFCPigNZ+sQ27vSOtq495R+5RKlIvHgDrd/u2VeR3eT9bUUasedSuT6Gqtqm3znJsTC/w0G8u3LU57Xt923IeRbtZqz1ogVgJQGMYrRH/uubH3Ej5woGYgUe/+T3Dd1jK4QOEwrOIGAE="}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":7341,"cache_read_input_tokens":8603,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":7341},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"42d06ad7-06e0-42cc-bcfa-73dd38080a40","uuid":"3a28e5f4-b799-49d4-8682-a43c9509596c"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01DLm9PYH1YQdsduDtNGDnku","type":"message","role":"assistant","content":[{"type":"text","text":"I'll research all three sites in parallel using separate scripts."}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":7341,"cache_read_input_tokens":8603,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":7341},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"42d06ad7-06e0-42cc-bcfa-73dd38080a40","uuid":"90aefc38-f47a-4a65-a251-904dac87f294"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01DLm9PYH1YQdsduDtNGDnku","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_011KmaqoFJwUA7pYcZvr48N8","name":"Bash","input":{"command":"cat << 'EOF' > /tmp/wiki_rust.js\nconst page = await browser.newPage();\nawait page.goto('https://en.wikipedia.org/wiki/Rust_(programming_language)');\nawait page.waitForSelector('#mw-content-text');\nconst text = await page.$eval('#mw-content-text', el => el.innerText.slice(0, 3000));\nconsole.log(text);\nEOF\ndev-browser --headless --browser axi-bench-dev-browser-multi_site_research-run1 run /tmp/wiki_rust.js","description":"Fetch Rust Wikipedia page for designer info","timeout":60000},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":7341,"cache_read_input_tokens":8603,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":7341},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"42d06ad7-06e0-42cc-bcfa-73dd38080a40","uuid":"1a55d5d4-4163-47b5-8abe-ee7e6350ebd0"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_011KmaqoFJwUA7pYcZvr48N8","type":"tool_result","content":"Rust\n\nParadigms\tConcurrentfunctionalgenericimperativestructured\nDeveloper\tThe Rust Team\nFirst appeared\tJanuary 19, 2012; 14 years ago\n\nStable release\t\n1.94.1[1]  / March 26, 2026; 7 days ago\n\nTyping discipline\tAffineinferrednominalstaticstrong\nImplementation language\tOCaml (2006–2011)\nRust (2012–present)\nPlatform\tCross-platform[note 1]\nOS\tCross-platform[note 2]\nLicense\tMIT, Apache 2.0[note 3]\nFilename extensions\t.rs, .rlib\nWebsite\trust-lang.org\nInfluenced by\nAlefBETACLUC#C++CycloneElmErlangHaskellHermesLimboMesaNapierNewsqueakNIL[note 4]OCamlRubySatherSchemeStandard MLSwift[7][8]\nInfluenced\nIdris[9]Project Verona[10]SPARK[11]Swift[12]V[13]Zig[14]Gleam[15]\n\nRust is a general-purpose programming language. It is noted for its emphasis on performance, type safety, concurrency, and memory safety.\n\nRust supports multiple programming paradigms. It was influenced by ideas from functional programming, including immutability, higher-order functions, algebraic data types, and pattern matching. It also supports object-oriented programming via structs, enums, traits, and methods. Rust is noted for enforcing memory safety (i.e., that all references point to valid memory) without a conventional garbage collector; instead, memory safety errors and data races are prevented by the \"borrow checker\", which tracks the object lifetime of references at compile time.\n\nSoftware 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\nRust has been adopted by many software projects, especially web services and system software. It has been studied academically and has a growing community of developers.\n\nHistory[edit]\n2006–2009: Early years[edit]\nMozilla Foundation headquarters, 650 Castro Street in Mountain View, California, June 2009\n\nRust began as a personal project by Mozilla employee Graydon Hoare in 2006. According to MIT Technology Review, he started the project due to his frustration with a broken elevator in his apartment building whose software had crashed,[16] and named the language after the group of fungi of the same name that is \"over-engineered for survival\".[16] During the time period between 2006 and 2009, Rust was not publicized to others at Mozilla and was written in Hoare's free time;[17]: 7:50  Hoare began speaking about the language around 2009 after a small group at Mozilla became interested in the project.[18] Hoare cited languages from the 1970s, 1980s, and 1990s as influences — including CLU, BETA, Mesa, NIL,[note 4] Erlang, Newsqueak, Napier, Hermes, Sather, Alef, and Limbo.[18] He described the language as \"technology from the past come to save the future from itself.\"[17]: 8:17 [18] Early Rust developer Manish Goregaokar similarly described Rust as bei","is_error":false}]},"parent_tool_use_id":null,"session_id":"42d06ad7-06e0-42cc-bcfa-73dd38080a40","uuid":"00e88c18-b8ea-40e5-bb34-19580968009c","timestamp":"2026-04-03T09:35:27.815Z","tool_use_result":{"stdout":"Rust\n\nParadigms\tConcurrentfunctionalgenericimperativestructured\nDeveloper\tThe Rust Team\nFirst appeared\tJanuary 19, 2012; 14 years ago\n\nStable release\t\n1.94.1[1]  / March 26, 2026; 7 days ago\n\nTyping discipline\tAffineinferrednominalstaticstrong\nImplementation language\tOCaml (2006–2011)\nRust (2012–present)\nPlatform\tCross-platform[note 1]\nOS\tCross-platform[note 2]\nLicense\tMIT, Apache 2.0[note 3]\nFilename extensions\t.rs, .rlib\nWebsite\trust-lang.org\nInfluenced by\nAlefBETACLUC#C++CycloneElmErlangHaskellHermesLimboMesaNapierNewsqueakNIL[note 4]OCamlRubySatherSchemeStandard MLSwift[7][8]\nInfluenced\nIdris[9]Project Verona[10]SPARK[11]Swift[12]V[13]Zig[14]Gleam[15]\n\nRust is a general-purpose programming language. It is noted for its emphasis on performance, type safety, concurrency, and memory safety.\n\nRust supports multiple programming paradigms. It was influenced by ideas from functional programming, including immutability, higher-order functions, algebraic data types, and pattern matching. It also supports object-oriented programming via structs, enums, traits, and methods. Rust is noted for enforcing memory safety (i.e., that all references point to valid memory) without a conventional garbage collector; instead, memory safety errors and data races are prevented by the \"borrow checker\", which tracks the object lifetime of references at compile time.\n\nSoftware 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\nRust has been adopted by many software projects, especially web services and system software. It has been studied academically and has a growing community of developers.\n\nHistory[edit]\n2006–2009: Early years[edit]\nMozilla Foundation headquarters, 650 Castro Street in Mountain View, California, June 2009\n\nRust began as a personal project by Mozilla employee Graydon Hoare in 2006. 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{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01DLm9PYH1YQdsduDtNGDnku","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01QQtGvDP5ATb2EtdFQyxF3W","name":"Bash","input":{"command":"cat << 'EOF' > /tmp/rustlang.js\nconst page = await browser.newPage();\nawait page.goto('https://www.rust-lang.org/');\nawait page.waitForSelector('h1, .tagline, .hero', {timeout: 15000});\nconst content = await page.evaluate(() => {\n  const h1 = document.querySelector('h1');\n  const tagline = document.querySelector('.tagline');\n  const hero = document.querySelector('.hero');\n  return {\n    h1: h1 ? h1.innerText : null,\n    tagline: tagline ? tagline.innerText : null,\n    hero: hero ? hero.innerText.slice(0, 500) : null,\n    bodyStart: document.body.innerText.slice(0, 800)\n  };\n});\nconsole.log(JSON.stringify(content, null, 2));\nEOF\ndev-browser --headless --browser axi-bench-dev-browser-multi_site_research-run1 run /tmp/rustlang.js","description":"Fetch rust-lang.org tagline/description","timeout":60000},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":7341,"cache_read_input_tokens":8603,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":7341},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"42d06ad7-06e0-42cc-bcfa-73dd38080a40","uuid":"6b10f5ad-cfc0-492e-b1ea-b3a43dccdb8f"}
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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01FLtbQDPatWyfyTcL6xaUf2","type":"tool_result","content":"Stars: 112k","is_error":false}]},"parent_tool_use_id":null,"session_id":"42d06ad7-06e0-42cc-bcfa-73dd38080a40","uuid":"cadd947c-ec5b-40f6-9783-56381a639fad","timestamp":"2026-04-03T09:35:32.834Z","tool_use_result":{"stdout":"Stars: 112k","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false}}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01QQtGvDP5ATb2EtdFQyxF3W","type":"tool_result","content":"{\n  \"h1\": \"Rust\",\n  \"tagline\": null,\n  \"hero\": null,\n  \"bodyStart\": \"Install\\nLearn\\nPlayground\\nTools\\nGovernance\\nCommunity\\nBlog\\nLanguage\\nEnglish (en-US)\\nEspañol (es)\\nFrançais (fr)\\nItaliano (it)\\n日本語 (ja)\\nPortuguês (pt-BR)\\nРусский (ru)\\nTürkçe (tr)\\n简体中文 (zh-CN)\\n正體中文 (zh-TW)\\nRust\\nA language empowering everyone\\nto build reliable and efficient software.\\nGET STARTED\\n\\nVersion 1.94.1\\n\\nWhy Rust?\\nPerformance\\n\\nRust 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.\\n\\nReliability\\n\\nRust’s rich type system and ownership model guarantee memory-safety and thread-safety — enabling you to eliminate many classes of bugs at compile-time.\\n\\nProductivity\\n\\nRust has great documentation, a friendly compiler with useful error messages, and top-notch t\"\n}","is_error":false}]},"parent_tool_use_id":null,"session_id":"42d06ad7-06e0-42cc-bcfa-73dd38080a40","uuid":"7df6a9dc-6dae-4337-9f85-a09c169cc05c","timestamp":"2026-04-03T09:35:33.380Z","tool_use_result":{"stdout":"{\n  \"h1\": \"Rust\",\n  \"tagline\": null,\n  \"hero\": null,\n  \"bodyStart\": \"Install\\nLearn\\nPlayground\\nTools\\nGovernance\\nCommunity\\nBlog\\nLanguage\\nEnglish (en-US)\\nEspañol (es)\\nFrançais (fr)\\nItaliano (it)\\n日本語 (ja)\\nPortuguês (pt-BR)\\nРусский (ru)\\nTürkçe (tr)\\n简体中文 (zh-CN)\\n正體中文 (zh-TW)\\nRust\\nA language empowering everyone\\nto build reliable and efficient software.\\nGET STARTED\\n\\nVersion 1.94.1\\n\\nWhy Rust?\\nPerformance\\n\\nRust 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.\\n\\nReliability\\n\\nRust’s rich type system and ownership model guarantee memory-safety and thread-safety — enabling you to eliminate many classes of bugs at compile-time.\\n\\nProductivity\\n\\nRust has great documentation, a friendly compiler with useful error messages, and top-notch t\"\n}","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false}}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01XC1bFZmxiyfryshQ28QhvX","type":"message","role":"assistant","content":[{"type":"text","text":"Here are the results from all three sites:\n\n**1. Wikipedia — Designer**\nRust was designed by **Graydon Hoare**, a software developer who created it in 2006 while working at Mozilla. Mozilla officially sponsored the project in 2009.\n\n**2. GitHub (rust-lang/rust) — Star Count**\nThe repository has **112k stars**.\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":2197,"cache_read_input_tokens":15944,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":2197},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"42d06ad7-06e0-42cc-bcfa-73dd38080a40","uuid":"f0a775af-cbaa-4925-97fe-e22116f4abc8"}
{"type":"result","subtype":"success","is_error":false,"duration_ms":16266,"duration_api_ms":15456,"num_turns":4,"result":"Here are the results from all three sites:\n\n**1. Wikipedia — Designer**\nRust was designed by **Graydon Hoare**, a software developer who created it in 2006 while working at Mozilla. Mozilla officially sponsored the project in 2009.\n\n**2. GitHub (rust-lang/rust) — Star Count**\nThe repository has **112k stars**.\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":"42d06ad7-06e0-42cc-bcfa-73dd38080a40","total_cost_usd":0.0590706,"usage":{"input_tokens":3,"cache_creation_input_tokens":9538,"cache_read_input_tokens":24547,"output_tokens":1062,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":9538,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"},"modelUsage":{"claude-sonnet-4-6":{"inputTokens":3,"outputTokens":1062,"cacheReadInputTokens":24547,"cacheCreationInputTokens":9538,"webSearchRequests":0,"costUSD":0.0590706,"contextWindow":200000,"maxOutputTokens":32000}},"permission_denials":[],"fast_mode_state":"off","uuid":"9372b299-8ecb-4991-8b89-5ce6761f7b25"}
