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{"type":"user","message":{"role":"user","content":[{"type":"text","text":"Use the agent-browser CLI to visit https://en.wikipedia.org/wiki/Rust_(programming_language) and find out who designed the Rust programming language. Run: `agent-browser open \"https://en.wikipedia.org/wiki/Rust_(programming_language)\" && agent-browser snapshot` to get the page content. Look for the \"Designer\" field in the infobox. Return the designer name(s)."}]},"parent_tool_use_id":"toolu_01LaKm2zeHBysTorTVcLNz5m","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"e8d5c2af-94ea-428d-806c-e930abea2bf4","timestamp":"2026-04-03T07:10:35.448Z"}
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{"type":"user","message":{"role":"user","content":[{"type":"text","text":"Use the agent-browser CLI to visit https://github.com/rust-lang/rust and find the star count for the repository. Run: `agent-browser open \"https://github.com/rust-lang/rust\" && agent-browser snapshot` to get the page content. Look for the star count (usually shown as \"k\" for thousands near a star icon). Return the exact star count shown."}]},"parent_tool_use_id":"toolu_01Lq3VXSCx5ajNUwD3vDgB5M","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"dd7cf39f-6125-4be2-ad12-a9f5c0018f4a","timestamp":"2026-04-03T07:10:36.864Z"}
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{"type":"user","message":{"role":"user","content":[{"type":"text","text":"Use the agent-browser CLI to visit https://www.rust-lang.org/ and find the main tagline or primary description on the homepage. Run: `agent-browser open \"https://www.rust-lang.org/\" && agent-browser snapshot` to get the page content. Look for the main hero text/tagline at the top of the page. Return the exact tagline or main description text."}]},"parent_tool_use_id":"toolu_01KrPrH2s3UAkooJuJhYwVDt","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"22e0552c-cb01-40c5-9fc0-058cd6919c85","timestamp":"2026-04-03T07:10:37.870Z"}
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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01Ay87cCUMs2mXMpfq6oKskR","type":"tool_result","content":"\u001b[32m✓\u001b[0m \u001b[1mGitHub - rust-lang/rust: Empowering everyone to build reliable and efficient software. · GitHub\u001b[0m\n  \u001b[2mhttps://github.com/rust-lang/rust\u001b[0m\n- navigation\n  - link \"Rust Logo\" [ref=e7]\n    - image \"Rust Logo\"\n  - list\n    - listitem [level=1]\n      - link \"Install\" [ref=e25]\n    - listitem [level=1]\n      - link \"Learn\" [ref=e26]\n    - listitem [level=1]\n      - link \"Playground\" [ref=e27]\n    - listitem [level=1]\n      - link \"Tools\" [ref=e28]\n    - listitem [level=1]\n      - link \"Governance\" [ref=e29]\n    - listitem [level=1]\n      - link \"Community\" [ref=e30]\n    - listitem [level=1]\n      - link \"Blog\" [ref=e31]\n  - generic\n    - LabelText\n      - StaticText \"Language\"\n    - combobox \"Language\" [expanded=false, ref=e8]: English (en-US)\n      - MenuListPopup\n        - option \"English (en-US)\" [selected, ref=e56]\n        - option \"Español (es)\" [ref=e57]\n        - option \"Français (fr)\" [ref=e58]\n        - option \"Italiano (it)\" [ref=e59]\n        - option \"日本語 (ja)\" [ref=e60]\n        - option \"Português (pt-BR)\" [ref=e61]\n        - option \"Русский (ru)\" [ref=e62]\n        - option \"Türkçe (tr)\" [ref=e63]\n        - option \"简体中文 (zh-CN)\" [ref=e64]\n        - option \"正體中文 (zh-TW)\" [ref=e65]\n- main\n  - sectionheader\n    - heading \"Rust\" [level=1, ref=e9]\n    - heading \"A language empowering everyone to build reliable and efficient software.\" [level=2, ref=e10]\n      - StaticText \"A language empowering everyone\"\n      - LineBreak \"\\n\"\n      - StaticText \"to build reliable and efficient software.\"\n    - link \"GET STARTED\" [ref=e11]\n    - paragraph\n      - link \"Version 1.94.1\" [ref=e32]\n  - sectionheader\n    - heading \"Why Rust?\" [level=2, ref=e33]\n  - generic\n    - heading \"Performance\" [level=3, ref=e34]\n    - paragraph\n      - 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  - generic\n    - heading \"Reliability\" [level=3, ref=e35]\n    - paragraph\n      - 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  - generic\n    - heading \"Productivity\" [level=3, ref=e36]\n    - paragraph\n      - 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  - sectionheader\n    - heading \"Build it in Rust\" [level=2, ref=e37]\n  - paragraph\n    - StaticText \"In 2018, the Rust community decided to improve the programming experience for a few distinct domains (see \"\n    - link \"the 2018 roadmap\" [ref=e38]\n    - StaticText \"). For these, you can find many high-quality crates and some awesome guides on how to get started.\"\n  - image \"terminal\"\n  - heading \"Command Line\" [level=3, ref=e12]\n  - paragraph\n    - 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  - link \"BUILDING TOOLS\" [ref=e13]\n  - image \"gear with puzzle piece elements\"\n  - heading \"WebAssembly\" [level=3, ref=e14]\n  - paragraph\n    - 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  - link \"WRITING WEB APPS\" [ref=e15]\n  - image \"a cloud with nodes\"\n  - heading \"Networking\" [level=3, ref=e16]\n  - paragraph\n    - StaticText \"Predictable performance. Tiny resource footprint. Rock-solid reliability. Rust is great for network services.\"\n  - link \"WORKING ON SERVERS\" [ref=e17]\n  - image \"an embedded device chip\"\n  - heading \"Embedded\" [level=3, ref=e18]\n  - paragraph\n    - StaticText \"Targeting low-resource devices? Need low-level control without giving up high-level conveniences? Rust has you covered.\"\n  - link \"STARTING WITH EMBEDDED\" [ref=e19]\n  - sectionheader\n    - heading \"Rust in production\" [level=2, ref=e39]\n  - paragraph\n    - StaticText \"Hundreds of companies around the world are using Rust in production today for fast, low-resource, cross-platform solutions. \"\n    - strong\n      - StaticText \"From startups to large corporations, from embedded devices to scalable web services, Rust is a great fit.\"\n  - sectionheader\n    - heading \"Get involved\" [level=2, ref=e40]\n  - generic\n    - heading \"Read Rust\" [level=3, ref=e41]\n    - paragraph\n      - StaticText \"We love documentation! Take a look at the books available online, as well as key blog posts and user guides.\"\n    - link \"READ THE BOOK\" [ref=e42]\n  - generic\n    - heading \"Watch Rust\" [level=3, ref=e43]\n    - paragraph\n      - StaticText \"The Rust community has a dedicated YouTube channel collecting a huge range of presentations and tutorials.\"\n    - link \"WATCH THE VIDEOS\" [ref=e44]\n  - heading \"Contribute code\" [level=3, ref=e20]\n  - paragraph\n    - StaticText \"Rust is truly a community effort, and we welcome contribution from hobbyists and production users, from newcomers and seasoned professionals. Come help us make the Rust experience even better!\"\n  - link \"READ CONTRIBUTION GUIDE\" [ref=e21]\n  - sectionheader\n    - heading \"Thanks\" [level=2, ref=e45]\n  - paragraph\n    - StaticText \"Rust would not exist without the generous contributions of time, work, and resources from individuals and companies. We are very grateful for the support!\"\n  - generic\n    - heading \"Individuals\" [level=3, ref=e46]\n    - paragraph\n      - StaticText \"Rust is a community project and is very thankful for the many community contributions it receives.\"\n    - link \"SEE INDIVIDUAL CONTRIBUTORS\" [ref=e47]\n  - generic\n    - heading \"Corporate sponsors\" [level=3, ref=e48]\n    - paragraph\n      - StaticText \"The Rust project receives support from companies through the Rust Foundation.\"\n    - link \"SEE FOUNDATION MEMBERS\" [ref=e49]\n- contentinfo\n  - generic\n    - heading \"Get help!\" [level=4, ref=e22]\n    - list\n      - listitem [level=1]\n        - link \"Documentation\" [ref=e66]\n      - listitem [level=1]\n        - link \"Rust Forge (Contributor Documentation)\" [ref=e67]\n      - listitem [level=1]\n        - link \"Ask a Question on the Users Forum\" [ref=e68]\n    - generic\n      - LabelText\n        - StaticText \"Language\"\n      - combobox \"Language\" [expanded=false, ref=e69]: English (en-US)\n        - MenuListPopup\n          - option \"English (en-US)\" [selected, ref=e70]\n          - option \"Español (es)\" [ref=e71]\n          - option \"Français (fr)\" [ref=e72]\n          - option \"Italiano (it)\" [ref=e73]\n          - option \"日本語 (ja)\" [ref=e74]\n          - option \"Português (pt-BR)\" [ref=e75]\n          - option \"Русский (ru)\" [ref=e76]\n          - option \"Türkçe (tr)\" [ref=e77]\n          - option \"简体中文 (zh-CN)\" [ref=e78]\n          - option \"正體中文 (zh-TW)\" [ref=e79]\n  - heading \"Terms and policies\" [level=4, ref=e1]\n  - list\n    - listitem [level=1]\n      - link \"Code of Conduct\" [ref=e50]\n    - listitem [level=1]\n      - link \"Licenses\" [ref=e51]\n    - listitem [level=1]\n      - link \"Logo Policy and Media Guide\" [ref=e52]\n    - listitem [level=1]\n      - link \"Security Disclosures\" [ref=e53]\n    - listitem [level=1]\n      - link \"Privacy Notice\" [ref=e54]\n    - listitem [level=1]\n      - link \"All Policies\" [ref=e55]\n  - heading \"Social\" [level=4, ref=e2]\n  - link \"Mastodon\" [ref=e3]\n    - image \"Mastodon\"\n  - link \"Bluesky\" [ref=e4]\n    - image \"Bluesky\"\n  - link \"youtube logo\" [ref=e5]\n    - image \"youtube logo\"\n  - link \"github logo\" [ref=e6]\n    - image \"github logo\"\n  - paragraph\n    - StaticText \"Maintained by the Rust Team. See a bug? \"\n    - link \"File an issue!\" [ref=e23]\n  - paragraph\n    - StaticText \"Web site built every day at 22:00 UTC\"\n  - paragraph\n    - StaticText \"Looking for the \"\n    - link \"previous website\" [ref=e24]\n    - StaticText \"?\"","is_error":false}]},"parent_tool_use_id":"toolu_01Lq3VXSCx5ajNUwD3vDgB5M","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"ac06ab3d-ca13-4274-b87c-f2dd14b40f70","timestamp":"2026-04-03T07:10:41.403Z"}
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For these, you can find many high-quality crates and some awesome guides on how to get started.\"\n  - image \"terminal\"\n  - heading \"Command Line\" [level=3, ref=e12]\n  - paragraph\n    - 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  - link \"BUILDING TOOLS\" [ref=e13]\n  - image \"gear with puzzle piece elements\"\n  - heading \"WebAssembly\" [level=3, ref=e14]\n  - paragraph\n    - 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  - link \"WRITING WEB APPS\" [ref=e15]\n  - image \"a cloud with nodes\"\n  - heading \"Networking\" [level=3, ref=e16]\n  - paragraph\n    - StaticText \"Predictable performance. Tiny resource footprint. Rock-solid reliability. Rust is great for network services.\"\n  - link \"WORKING ON SERVERS\" [ref=e17]\n  - image \"an embedded device chip\"\n  - heading \"Embedded\" [level=3, ref=e18]\n  - paragraph\n    - StaticText \"Targeting low-resource devices? Need low-level control without giving up high-level conveniences? Rust has you covered.\"\n  - link \"STARTING WITH EMBEDDED\" [ref=e19]\n  - sectionheader\n    - heading \"Rust in production\" [level=2, ref=e39]\n  - paragraph\n    - StaticText \"Hundreds of companies around the world are using Rust in production today for fast, low-resource, cross-platform solutions. \"\n    - strong\n      - StaticText \"From startups to large corporations, from embedded devices to scalable web services, Rust is a great fit.\"\n  - sectionheader\n    - heading \"Get involved\" [level=2, ref=e40]\n  - generic\n    - heading \"Read Rust\" [level=3, ref=e41]\n    - paragraph\n      - StaticText \"We love documentation! Take a look at the books available online, as well as key blog posts and user guides.\"\n    - link \"READ THE BOOK\" [ref=e42]\n  - generic\n    - heading \"Watch Rust\" [level=3, ref=e43]\n    - paragraph\n      - StaticText \"The Rust community has a dedicated YouTube channel collecting a huge range of presentations and tutorials.\"\n    - link \"WATCH THE VIDEOS\" [ref=e44]\n  - heading \"Contribute code\" [level=3, ref=e20]\n  - paragraph\n    - StaticText \"Rust is truly a community effort, and we welcome contribution from hobbyists and production users, from newcomers and seasoned professionals. Come help us make the Rust experience even better!\"\n  - link \"READ CONTRIBUTION GUIDE\" [ref=e21]\n  - sectionheader\n    - heading \"Thanks\" [level=2, ref=e45]\n  - paragraph\n    - StaticText \"Rust would not exist without the generous contributions of time, work, and resources from individuals and companies. 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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01KrPrH2s3UAkooJuJhYwVDt","type":"tool_result","content":[{"type":"text","text":"The main tagline/primary description on the Rust homepage hero section is:\n\n**\"A language empowering everyone to build reliable and efficient software.\"**\n\nThis appears as the primary `<h2>` heading directly below the \"Rust\" `<h1>` title at the top of the page, serving as the main tagline for the language."},{"type":"text","text":"agentId: a4cf5a2407dc1d144 (use SendMessage with to: 'a4cf5a2407dc1d144' to continue this agent)\n<usage>total_tokens: 10881\ntool_uses: 1\nduration_ms: 6935</usage>"}]}]},"parent_tool_use_id":null,"session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"e8fa038e-36e9-41b5-b351-d04caca8b115","timestamp":"2026-04-03T07:10:44.805Z","tool_use_result":{"status":"completed","prompt":"Use the agent-browser CLI to visit https://www.rust-lang.org/ and find the main tagline or primary description on the homepage. Run: `agent-browser open \"https://www.rust-lang.org/\" && agent-browser snapshot` to get the page content. Look for the main hero text/tagline at the top of the page. Return the exact tagline or main description text.","agentId":"a4cf5a2407dc1d144","content":[{"type":"text","text":"The main tagline/primary description on the Rust homepage hero section is:\n\n**\"A language empowering everyone to build reliable and efficient software.\"**\n\nThis appears as the primary `<h2>` heading directly below the \"Rust\" `<h1>` title at the top of the page, serving as the main tagline for the language."}],"totalDurationMs":6935,"totalTokens":10881,"totalToolUseCount":1,"usage":{"input_tokens":1,"cache_creation_input_tokens":2781,"cache_read_input_tokens":8019,"output_tokens":80,"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":2781},"inference_geo":"","iterations":[],"speed":"standard"}}}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01PXfnt83WMyzp8zKbYVuKGM","type":"tool_result","content":"\u001b[32m✓\u001b[0m \u001b[1mGitHub - rust-lang/rust: Empowering everyone to build reliable and efficient software. · GitHub\u001b[0m\n  \u001b[2mhttps://github.com/rust-lang/rust\u001b[0m","is_error":false}]},"parent_tool_use_id":"toolu_01Lq3VXSCx5ajNUwD3vDgB5M","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"2e40b25a-8a5a-4d89-a98a-f6fe44785f04","timestamp":"2026-04-03T07:10:45.385Z"}
{"type":"system","subtype":"task_progress","task_id":"aff5109e6203f0d45","tool_use_id":"toolu_01LaKm2zeHBysTorTVcLNz5m","description":"Searching for Designer","usage":{"total_tokens":9929,"tool_uses":3,"duration_ms":10347},"last_tool_name":"Grep","uuid":"f2bac6a6-4b8e-49b5-8380-bbda1226602b","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de"}
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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_011Lr45eGQi2k5K5wVikK4EA","type":"tool_result","content":"No matches found"}]},"parent_tool_use_id":"toolu_01LaKm2zeHBysTorTVcLNz5m","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"3b4a6e92-c364-4729-81f1-2fc3e33f281d","timestamp":"2026-04-03T07:10:45.806Z"}
{"type":"system","subtype":"task_progress","task_id":"a3734782aaf8f1f23","tool_use_id":"toolu_01Lq3VXSCx5ajNUwD3vDgB5M","description":"Running Get snapshot and filter for star/fork counts","usage":{"total_tokens":11098,"tool_uses":3,"duration_ms":11249},"last_tool_name":"Bash","uuid":"718f046b-4fb5-4e19-a06b-befcc23f3b83","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01WGM4arGGzoW8FTJxtVqvJV","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_011zyy45P93V6VpYvuAER2BS","name":"Bash","input":{"command":"agent-browser snapshot 2>&1 | grep -i \"star\\|k\\|fork\\|watch\" | head -50","description":"Get snapshot and filter for star/fork counts","timeout":60000},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":218,"cache_read_input_tokens":10823,"cache_creation":{"ephemeral_5m_input_tokens":218,"ephemeral_1h_input_tokens":0},"output_tokens":48,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":"toolu_01Lq3VXSCx5ajNUwD3vDgB5M","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"2afb435e-ab37-4bd2-8a3d-3c509f89282e"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_011zyy45P93V6VpYvuAER2BS","type":"tool_result","content":"  - link \"Skip to content\" [ref=e1]\n      - link \"Homepage\" [ref=e9]\n            - link \"Pricing\" [ref=e198]\n      - link \"Sign in\" [ref=e23]\n      - link \"Sign up\" [ref=e11]\n    - link \"rust-lang\" [ref=e6]\n      - link \"rust\" [ref=e10]\n        - link \"You must be signed in to change notification settings\" [ref=e24]\n        - link \"Fork 14.7k\" [ref=e25]\n          - StaticText \"Fork \"\n          - StaticText \"14.7k\"\n        - link \"You must be signed in to star a repository\" [ref=e26]\n          - StaticText \" Star \"\n          - StaticText \"112k\"\n          - link \"Code\" [ref=e27]\n          - link \"Issues 5k+\" [ref=e28]\n            - StaticText \"5k+\"\n          - link \"Pull requests 1.1k\" [ref=e29]\n            - StaticText \"1.1k\"\n          - link \"Actions\" [ref=e30]\n          - link \"Projects\" [ref=e31]\n          - link \"Security and quality 6\" [ref=e32]\n          - link \"Insights\" [ref=e33]\n    - link \"10 Branches\" [ref=e34]\n    - link \"156 Tags\" [ref=e35]\n    - generic [ref=e36] clickable [onclick]\n          - link \"bors\" [ref=e203]\n          - link \"commits by bors\" [ref=e204]\n          - link \"Auto merge of\" [ref=e205]\n          - link \"#154727\" [ref=e206]\n          - link \"- JonathanBrouwer:rollup-I3Rg5V6, r=JonathanBro…\" [ref=e207]\n          - link \"Commit 55e86c9\" [ref=e210]\n          - link \"322,544 Commits\" [ref=e212]\n      - row [ref=e45] clickable [onclick]\n          - link \".github, (Directory)\" [ref=e341]\n          - link \"Do not cancel try builds after first job failure\" [ref=e266]\n      - row [ref=e46] clickable [onclick]\n          - link \"LICENSES, (Directory)\" [ref=e342]\n          - link \"Synchronize Unicode license text from unicode.org\" [ref=e267]\n      - row [ref=e47] clickable [onclick]\n          - link \"compiler, (Directory)\" [ref=e343]\n            - link \"Rollup merge of\" [ref=e268]\n            - link \"#154709\" [ref=e269]\n            - link \"- Jamesbarford:chore/revert-ty-type-alias, r=…\" [ref=e270]\n      - row [ref=e48] clickable [onclick]\n          - link \"library, (Directory)\" [ref=e344]\n        - cell \"Rollup merge of #154442 - nik-contrib:derive-root, r=jhpratt\" [ref=e97]\n            - link \"Rollup merge of\" [ref=e271]\n            - link \"#154442\" [ref=e272]\n            - link \"- nik-contrib:derive-root, r=jhpratt\" [ref=e273]","is_error":false}]},"parent_tool_use_id":"toolu_01Lq3VXSCx5ajNUwD3vDgB5M","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"f3005e66-f9b6-4887-8289-d0216f37f832","timestamp":"2026-04-03T07:10:48.335Z"}
{"type":"system","subtype":"task_notification","task_id":"aff5109e6203f0d45","tool_use_id":"toolu_01LaKm2zeHBysTorTVcLNz5m","status":"completed","output_file":"","summary":"Research Wikipedia Rust designer","usage":{"total_tokens":10133,"tool_uses":3,"duration_ms":14041},"uuid":"b48a39ef-3cb1-400e-9cad-bc221bfb721b","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01LaKm2zeHBysTorTVcLNz5m","type":"tool_result","content":[{"type":"text","text":"The snapshot doesn't explicitly show a \"Designer\" label from the infobox, but the content clearly identifies the designer. Based on the page content retrieved from the Wikipedia article on Rust:\n\nThe Rust programming language was designed by **Graydon Hoare**.\n\nSpecifically, the page states: \"Software developer Graydon Hoare created Rust in 2006 while working at Mozilla\" and \"Rust began as a personal project by Mozilla employee Graydon Hoare in 2006.\" He later stepped down from the project in 2013."},{"type":"text","text":"agentId: aff5109e6203f0d45 (use SendMessage with to: 'aff5109e6203f0d45' to continue this agent)\n<usage>total_tokens: 10180\ntool_uses: 3\nduration_ms: 14042</usage>"}]}]},"parent_tool_use_id":null,"session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"4c6d6ab4-9988-4f0c-b3c8-77ba5844b3a1","timestamp":"2026-04-03T07:10:49.490Z","tool_use_result":{"status":"completed","prompt":"Use the agent-browser CLI to visit https://en.wikipedia.org/wiki/Rust_(programming_language) and find out who designed the Rust programming language. Run: `agent-browser open \"https://en.wikipedia.org/wiki/Rust_(programming_language)\" && agent-browser snapshot` to get the page content. Look for the \"Designer\" field in the infobox. Return the designer name(s).","agentId":"aff5109e6203f0d45","content":[{"type":"text","text":"The snapshot doesn't explicitly show a \"Designer\" label from the infobox, but the content clearly identifies the designer. Based on the page content retrieved from the Wikipedia article on Rust:\n\nThe Rust programming language was designed by **Graydon Hoare**.\n\nSpecifically, the page states: \"Software developer Graydon Hoare created Rust in 2006 while working at Mozilla\" and \"Rust began as a personal project by Mozilla employee Graydon Hoare in 2006.\" He later stepped down from the project in 2013."}],"totalDurationMs":14042,"totalTokens":10180,"totalToolUseCount":3,"usage":{"input_tokens":1,"cache_creation_input_tokens":1064,"cache_read_input_tokens":8988,"output_tokens":127,"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":1064},"inference_geo":"","iterations":[],"speed":"standard"}}}
{"type":"system","subtype":"task_notification","task_id":"a3734782aaf8f1f23","tool_use_id":"toolu_01Lq3VXSCx5ajNUwD3vDgB5M","status":"completed","output_file":"","summary":"Research GitHub Rust star count","usage":{"total_tokens":12071,"tool_uses":3,"duration_ms":14646},"uuid":"a86480ca-922e-4060-9cb7-ac576e9c7daa","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01Lq3VXSCx5ajNUwD3vDgB5M","type":"tool_result","content":[{"type":"text","text":"The snapshot clearly shows the star count. The GitHub repository for `rust-lang/rust` shows a star count of **112k**.\n\nThis was visible in the snapshot output:\n```\n- link \"You must be signed in to star a repository\" [ref=e26]\n  - StaticText \" Star \"\n  - StaticText \"112k\"\n```\n\nThe exact star count shown on the repository page is **112k**."},{"type":"text","text":"agentId: a3734782aaf8f1f23 (use SendMessage with to: 'a3734782aaf8f1f23' to continue this agent)\n<usage>total_tokens: 12112\ntool_uses: 3\nduration_ms: 14647</usage>"}]}]},"parent_tool_use_id":null,"session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"f9585a30-878f-4b54-8ab7-858073215321","timestamp":"2026-04-03T07:10:51.511Z","tool_use_result":{"status":"completed","prompt":"Use the agent-browser CLI to visit https://github.com/rust-lang/rust and find the star count for the repository. Run: `agent-browser open \"https://github.com/rust-lang/rust\" && agent-browser snapshot` to get the page content. Look for the star count (usually shown as \"k\" for thousands near a star icon). Return the exact star count shown.","agentId":"a3734782aaf8f1f23","content":[{"type":"text","text":"The snapshot clearly shows the star count. The GitHub repository for `rust-lang/rust` shows a star count of **112k**.\n\nThis was visible in the snapshot output:\n```\n- link \"You must be signed in to star a repository\" [ref=e26]\n  - StaticText \" Star \"\n  - StaticText \"112k\"\n```\n\nThe exact star count shown on the repository page is **112k**."}],"totalDurationMs":14647,"totalTokens":12112,"totalToolUseCount":3,"usage":{"input_tokens":1,"cache_creation_input_tokens":1190,"cache_read_input_tokens":10823,"output_tokens":98,"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":1190},"inference_geo":"","iterations":[],"speed":"standard"}}}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01Evb2kGZTj7Q1g7gYp3XCrr","type":"message","role":"assistant","content":[{"type":"text","text":"Here's the Rust research summary across all three sites:\n\n| Site | Info |\n|------|------|\n| **Wikipedia** | Designed by **Graydon Hoare** (started as a personal project in 2006 while at Mozilla) |\n| **GitHub** (`rust-lang/rust`) | **112k stars** |\n| **rust-lang.org** | Tagline: *\"A language empowering everyone to build reliable and efficient software.\"* |"}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":183,"cache_creation_input_tokens":872,"cache_read_input_tokens":16389,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":872},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","uuid":"a3945c71-3df4-464b-9b4e-e816a0ed2310"}
{"type":"result","subtype":"success","is_error":false,"duration_ms":27491,"duration_api_ms":43719,"num_turns":5,"result":"Here's the Rust research summary across all three sites:\n\n| Site | Info |\n|------|------|\n| **Wikipedia** | Designed by **Graydon Hoare** (started as a personal project in 2006 while at Mozilla) |\n| **GitHub** (`rust-lang/rust`) | **112k stars** |\n| **rust-lang.org** | Tagline: *\"A language empowering everyone to build reliable and efficient software.\"* |","stop_reason":"end_turn","session_id":"a2698a7a-a822-4ebe-9501-e2943c0f94de","total_cost_usd":0.15053670000000002,"usage":{"input_tokens":186,"cache_creation_input_tokens":8658,"cache_read_input_tokens":40865,"output_tokens":713,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":8658,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"},"modelUsage":{"claude-sonnet-4-6":{"inputTokens":202,"outputTokens":2100,"cacheReadInputTokens":125619,"cacheCreationInputTokens":21532,"webSearchRequests":0,"costUSD":0.15053670000000002,"contextWindow":200000,"maxOutputTokens":32000}},"permission_denials":[],"fast_mode_state":"off","uuid":"129e9545-a277-4354-b89f-0a8352b8d65c"}
