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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01PMv3ahRkYri1WNrJGEGLKd","type":"tool_result","content":"page:\n  title: Rust (programming language) - Wikipedia\n  refs: 8590\nno matches for \"designer designed\" in snapshot or page text\npage text:\nJump to content\nMain menu\nSearch\nDonate\nCreate account\nLog in\nContents hide\n(Top)\nHistory\nToggle History subsection\nSyntax and features\nToggle Syntax and features subsection\nSafety\nEcosystem\nToggle Ecosystem subsection\nPerformance\nAdoption\nIn academic research\nCommunity\nToggle Community subsection\nSee also\nNotes\nReferences\nToggle References subsection\nExternal links\nRust (programming language)\n53 languages\nArticle\nTalk\nRead\nEdit\nView history\nTools\nAppearance hide\nBirthday mode (Baby Globe)\nDisabled\nEnabled\nLearn more about Birthday mode\nText\nSmall\nStandard\nLarge\nWidth\nStandard\nWide\nColor (beta)\nAutomatic\nLight\nDark\nFrom Wikipedia, the free encyclopedia\nRust\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\n... (74415 chars total, showing first 3000)","is_error":false}]},"parent_tool_use_id":"toolu_01EL1ARpyCs76UG98gxEeZ9b","session_id":"1a9cd2d7-c434-4c8f-95d3-b59faec1e8e6","uuid":"8cb1fd49-a0e8-47ac-934b-d600f6bae082","timestamp":"2026-04-04T05:45:40.509Z"}
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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01XLrhZCLFGrHZuK9se2FVkr","type":"tool_result","content":"page:\n  title: \"GitHub - rust-lang/rust: Empowering everyone to build reliable and efficient software. · GitHub\"\n  refs: 580\nsnapshot (12 matches for \"star\"):\nuid=8_0 RootWebArea \"GitHub - rust-lang/rust: Empowering everyone to build reliable and efficient software. · GitHub\" url=\"https://github.com/rust-lang/rust\"\n  uid=8_1 link \"Skip to content\" url=\"https://github.com/rust-lang/rust#start-of-content\"\n    uid=8_2 StaticText \"Skip to content\"\n  uid=8_3 banner\n    uid=8_4 heading \"Navigation Menu\" level=\"2\"\n    uid=8_5 link \"Homepage\" url=\"https://github.com/\"\n    uid=8_6 navigation \"Global\"\n    ...\n    uid=8_28 link \"You must be signed in to change notification settings\" description=\"You must be signed in to change notification settings\" url=\"https://github.com/login?return_to=%2Frust-lang%2Frust\"\n      uid=8_29 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url=\"https://raw.githubusercontent.com/rust-lang/www.rust-lang.org/master/static/images/rust-social-wide-dark.svg\"\n      uid=8_352 link \"Website\" url=\"https://www.rust-lang.org/\"\n        uid=8_353 StaticText \"Website\"\n      uid=8_354 StaticText \" | \"\n      uid=8_355 link \"Getting started\" url=\"https://www.rust-lang.org/learn/get-started\"\n        uid=8_356 StaticText \"Getting started\"\n      uid=8_357 StaticText \" | \"\n      uid=8_358 link \"Learn\" url=\"https://www.rust-lang.org/learn\"\n        uid=8_359 StaticText \"Learn\"\n      uid=8_360 StaticText \" | \"\n      uid=8_361 link \"Documentation\" url=\"https://www.rust-lang.org/learn#learn-use\"\n    ...\n        uid=8_385 StaticText \"Clippy\"\n      uid=8_386 StaticText \") and editor support (\"\n      uid=8_387 link \"rust-analyzer\" url=\"https://github.com/rust-lang/rust-analyzer\"\n        uid=8_388 StaticText \"rust-analyzer\"\n      uid=8_389 StaticText \").\"\n      uid=8_390 heading \"Quick Start\" level=\"2\"\n      uid=8_391 link \"Permalink: Quick Start\" url=\"https://github.com/rust-lang/rust#quick-start\"","is_error":false}]},"parent_tool_use_id":"toolu_01EL1ARpyCs76UG98gxEeZ9b","session_id":"1a9cd2d7-c434-4c8f-95d3-b59faec1e8e6","uuid":"82b92edd-22bc-4b97-ab46-8977e5769489","timestamp":"2026-04-04T05:45:45.357Z"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01CPTVoJav7FazQ5sTdHKHq5","type":"tool_result","content":"page:\n  title: Rust Programming Language\n  url: \"https://www.rust-lang.org/\"\n  refs: 145\n  tip: \"use --query \\\"text\\\" to search full page\"\nsnapshot:\nuid=9_0 RootWebArea \"Rust Programming Language\" url=\"https://rust-lang.org/\"\n  uid=9_1 navigation\n    uid=9_2 link \"Rust Logo\" url=\"https://rust-lang.org/\"\n      uid=9_3 image \"Rust Logo\" url=\"https://rust-lang.org/static/images/rust-logo-blk.svg\"\n    uid=9_4 link \"Install\" url=\"https://rust-lang.org/tools/install\"\n      uid=9_5 StaticText \"Install\"\n    uid=9_6 link \"Learn\" url=\"https://rust-lang.org/learn\"\n      uid=9_7 StaticText \"Learn\"\n    uid=9_8 link \"Playground\" url=\"https://play.rust-lang.org/\"\n      uid=9_9 StaticText \"Playground\"\n    uid=9_10 link \"Tools\" url=\"https://rust-lang.org/tools\"\n      uid=9_11 StaticText \"Tools\"\n    uid=9_12 link \"Governance\" url=\"https://rust-lang.org/governance\"\n      uid=9_13 StaticText \"Governance\"\n    uid=9_14 link \"Community\" url=\"https://rust-lang.org/community\"\n      uid=9_15 StaticText \"Community\"\n    uid=9_16 link \"Blog\" url=\"https://blog.rust-lang.org/\"\n      uid=9_17 StaticText \"Blog\"\n    uid=9_18 StaticText \"Language\"\n    uid=9_19 combobox \"Language\" expandable haspopup=\"menu\" value=\"English (en-US)\"\n      uid=9_20 option \"English (en-US)\" selectable selected value=\"English (en-US)\"\n      uid=9_21 option \"Español (es)\" selectable value=\"Español (es)\"\n      uid=9_22 option \"Français (fr)\" selectable value=\"Français (fr)\"\n      uid=9_23 option \"Italiano (it)\" selectable value=\"Italiano (it)\"\n      uid=9_24 option \"日本語 (ja)\" selectable value=\"日本語 (ja)\"\n      uid=9_25 option \"Português (pt-BR)\" selectable value=\"Português (pt-BR)\"\n      uid=9_26 option \"Русский (ru)\" selectable value=\"Русский (ru)\"\n      uid=9_27 option \"Türkçe (tr)\" selectable value=\"Türkçe (tr)\"\n      uid=9_28 option \"简体中文 (zh-CN)\" selectable value=\"简体中文 (zh-CN)\"\n      uid=9_29 option \"正體中文 (zh-TW)\" selectable value=\"正體中文 (zh-TW)\"\n  uid=9_30 main\n    uid=9_31 heading \"Rust\" level=\"1\"\n    uid=9_32 heading \"A language empowering everyone to build reliable and efficient software.\" level=\"2\"\n    uid=9_33 link \"GET STARTED\" url=\"https://rust-lang.org/learn/get-started\"\n      uid=9_34 StaticText \"GET STARTED\"\n    uid=9_35 link \"Version 1.94.1\" url=\"https://blog.rust-lang.org/releases/latest\"\n      uid=9_36 StaticText \"Version 1.94.1\"\n    uid=9_37 heading \"Why Rust?\" level=\"2\"\n    uid=9_38 heading \"Performance\" level=\"3\"\n    uid=9_39 StaticText \"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.\"\n    uid=9_40 heading \"Reliability\" level=\"3\"\n    uid=9_41 StaticText \"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.\"\n    uid=9_42 heading \"Productivity\" level=\"3\"\n    uid=9_43 StaticText \"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.\"\n    uid=9_44 heading \"Build it in Rust\" level=\"2\"\n    uid=9_45 StaticText \"In 2018, the Rust community decided to improve the programming experience for a few distinct domains (see \"\n    uid=9_46 link \"the 2018 roadmap\" url=\"https://blog.rust-lang.org/2018/03/12/roadmap.html\"\n      uid=9_47 StaticText \"the 2018 roadmap\"\n    uid=9_48 StaticText \"). For these, you can find many high-quality crates and some awesome guides on how to get started.\"\n    uid=9_49 image \"terminal\" url=\"https://rust-lang.org/static/images/cli.svg\"\n    uid=9_50 heading \"Command Line\" level=\"3\"\n    uid=9_51 StaticText \"Whip up a CLI tool quickly with Rust’s robust ecosystem. Rust helps you maintain your app with confidence and distribute it with ease.\"\n    uid=9_52 link \"BUILDING TOOLS\" url=\"https://rust-lang.org/what/cli\"\n      uid=9_53 StaticText \"BUILDING TOOLS\"\n    uid=9_54 image \"gear with puzzle piece elements\" url=\"https://rust-lang.org/static/images/webassembly.svg\"\n    uid=9_55 heading \"WebAssembly\" level=\"3\"\n    uid=9_56 StaticText \"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    uid=9_57 link \"WRITING WEB APPS\" url=\"https://rust-lang.org/what/wasm\"\n      uid=9_58 StaticText \"WRITING WEB APPS\"\n    uid=9_59 image \"a cloud with nodes\" url=\"https://rust-lang.org/static/images/networking.svg\"\n    uid=9_60 heading \"Networking\" level=\"3\"\n    uid=9_61 StaticText \"Predictable performance. Tiny resource footprint. Rock-solid reliability. Rust is great for network services.\"\n    uid=9_62 link \"WORKING ON SERVERS\" url=\"https://rust-lang.org/what/networking\"\n      uid=9_63 StaticText \"WORKING ON SERVERS\"\n    uid=9_64 image \"an embedded device chip\" url=\"https://rust-lang.org/static/images/embedded.svg\"\n    uid=9_65 heading \"Embedded\" level=\"3\"\n    uid=9_66 StaticText \"Targeting low-resource devices? Need low-level control without giving up high-level conveniences? Rust has you covered.\"\n    uid=9_67 link \"STARTING WITH EMBEDDED\" url=\"https://rust-lang.org/what/embedded\"\n      uid=9_68 StaticText \"STARTING WITH EMBEDDED\"\n    uid=9_69 heading \"Rust in production\" level=\"2\"\n    uid=9_70 StaticText \"Hundreds of companies around the world are using Rust in production today for fast, low-resource, cross-platform solutions. \"\n    uid=9_71 StaticText \"From startups to large corporations, from embedded devices to scalable web services, Rust is a great fit.\"\n    uid=9_72 heading \"Get involved\" level=\"2\"\n    uid=9_73 heading \"Read Rust\" level=\"3\"","is_error":false}]},"parent_tool_use_id":"toolu_01EL1ARpyCs76UG98gxEeZ9b","session_id":"1a9cd2d7-c434-4c8f-95d3-b59faec1e8e6","uuid":"746499e6-064b-42dc-8dc2-8bf4753e29e2","timestamp":"2026-04-04T05:45:45.913Z"}
{"type":"system","subtype":"task_notification","task_id":"a82cd14d4bfa26045","tool_use_id":"toolu_01EL1ARpyCs76UG98gxEeZ9b","status":"completed","output_file":"","summary":"Research Rust on three sites","usage":{"total_tokens":16062,"tool_uses":14,"duration_ms":50095},"uuid":"a84d4c32-113c-4d66-a324-919af7e7b8d4","session_id":"1a9cd2d7-c434-4c8f-95d3-b59faec1e8e6"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01EL1ARpyCs76UG98gxEeZ9b","type":"tool_result","content":[{"type":"text","text":"All three results are in. Here is what was found for each site:\n\n---\n\n**1. Wikipedia — Who designed Rust**\nFrom https://en.wikipedia.org/wiki/Rust_(programming_language):\n\n> \"Software developer **Graydon Hoare** created Rust in 2006 while working at Mozilla, which officially sponsored the project in 2009.\"\n\nThe infobox also lists the current developer as **The Rust Team**.\n\n---\n\n**2. GitHub — Star count**\nFrom https://github.com/rust-lang/rust:\n\n> **112k stars** (shown as \"Star 112k\" in the repository header, with 14.7k forks)\n\nThe page title also states the repo description: \"Empowering everyone to build reliable and efficient software.\"\n\n---\n\n**3. rust-lang.org — Tagline / main description**\nFrom https://www.rust-lang.org/ (the `<h2>` immediately under the \"Rust\" heading):\n\n> **\"A language empowering everyone to build reliable and efficient software.\"**"},{"type":"text","text":"agentId: a82cd14d4bfa26045 (use SendMessage with to: 'a82cd14d4bfa26045' to continue this agent)\n<usage>total_tokens: 16081\ntool_uses: 14\nduration_ms: 50096</usage>"}]}]},"parent_tool_use_id":null,"session_id":"1a9cd2d7-c434-4c8f-95d3-b59faec1e8e6","uuid":"c3c0059e-598a-47a1-8949-2c89a19d044b","timestamp":"2026-04-04T05:45:54.681Z","tool_use_result":{"status":"completed","prompt":"Use the chrome-devtools-axi CLI to research the Rust programming language across three sites simultaneously. Run these three commands and report the results:\n\n1. Navigate to https://en.wikipedia.org/wiki/Rust_(programming_language) and find who designed Rust\n2. Navigate to https://github.com/rust-lang/rust and find the star count\n3. Navigate to https://www.rust-lang.org/ and find the tagline or main description\n\nUse chrome-devtools-axi commands for all browsing. Report the exact text found for each site.","agentId":"a82cd14d4bfa26045","content":[{"type":"text","text":"All three results are in. Here is what was found for each site:\n\n---\n\n**1. Wikipedia — Who designed Rust**\nFrom https://en.wikipedia.org/wiki/Rust_(programming_language):\n\n> \"Software developer **Graydon Hoare** created Rust in 2006 while working at Mozilla, which officially sponsored the project in 2009.\"\n\nThe infobox also lists the current developer as **The Rust Team**.\n\n---\n\n**2. GitHub — Star count**\nFrom https://github.com/rust-lang/rust:\n\n> **112k stars** (shown as \"Star 112k\" in the repository header, with 14.7k forks)\n\nThe page title also states the repo description: \"Empowering everyone to build reliable and efficient software.\"\n\n---\n\n**3. rust-lang.org — Tagline / main description**\nFrom https://www.rust-lang.org/ (the `<h2>` immediately under the \"Rust\" heading):\n\n> **\"A language empowering everyone to build reliable and efficient software.\"**"}],"totalDurationMs":50096,"totalTokens":16081,"totalToolUseCount":14,"usage":{"input_tokens":1,"cache_creation_input_tokens":3906,"cache_read_input_tokens":11926,"output_tokens":248,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":0,"ephemeral_5m_input_tokens":3906},"inference_geo":"","iterations":[],"speed":"standard"}}}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01PXhF6nsLYdSpw4oYcunDQL","type":"message","role":"assistant","content":[{"type":"text","text":"Here's the research summary:\n\n**1. Wikipedia — Designer**\nRust was created by **Graydon Hoare** in 2006 while working at Mozilla (which officially sponsored the project in 2009). Current developer: The Rust Team.\n\n**2. GitHub — Star count**\nThe [rust-lang/rust](https://github.com/rust-lang/rust) repository has **112k stars** (with 14.7k forks).\n\n**3. rust-lang.org — Tagline**\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":585,"cache_read_input_tokens":16377,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":585},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1a9cd2d7-c434-4c8f-95d3-b59faec1e8e6","uuid":"42cb3c2d-b2ae-4f95-997b-844ce11baf9c"}
{"type":"result","subtype":"success","is_error":false,"duration_ms":58194,"duration_api_ms":54542,"num_turns":2,"result":"Here's the research summary:\n\n**1. Wikipedia — Designer**\nRust was created by **Graydon Hoare** in 2006 while working at Mozilla (which officially sponsored the project in 2009). Current developer: The Rust Team.\n\n**2. GitHub — Star count**\nThe [rust-lang/rust](https://github.com/rust-lang/rust) repository has **112k stars** (with 14.7k forks).\n\n**3. rust-lang.org — Tagline**\n> \"A language empowering everyone to build reliable and efficient software.\"","stop_reason":"end_turn","session_id":"1a9cd2d7-c434-4c8f-95d3-b59faec1e8e6","total_cost_usd":0.15477495,"usage":{"input_tokens":3,"cache_creation_input_tokens":8359,"cache_read_input_tokens":24980,"output_tokens":396,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":8359,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"},"modelUsage":{"claude-sonnet-4-6":{"inputTokens":13,"outputTokens":2369,"cacheReadInputTokens":94949,"cacheCreationInputTokens":24191,"webSearchRequests":0,"costUSD":0.15477495,"contextWindow":200000,"maxOutputTokens":32000}},"permission_denials":[],"fast_mode_state":"off","uuid":"a081ae67-9fec-45d8-b99c-255f7154b55c"}
