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{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01H1B5MrpvndDQyjASeoKThX","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"Let me write a script to navigate to the Wikipedia article for Ada Lovelace, then find and click the link to Charles Babbage, and report his birth date.","signature":"EtYCClsIDBgCKkA9s47pSDedDdtClzL4hh6wSSy2jzQTsBSw2WeFTlFYVOffPu7gVq6haYk08/O+XoglmjGqpZnXBOXsuGLTkvdEMhFjbGF1ZGUtc29ubmV0LTQtNjgAEgxk0zR4wAM8HPyX6fEaDHdLl1hkSqsJZfBa8SIwK1I6rUQ3Ao66muwv5ov/JQ1nkZMKuNfyBXyUGhm/jb6CkqDq17MjzDcQgvNteL4XKqgBvYN/bWH8o5rX3iSxdrmgSC/5p0EyEKsjtHfhSOHmmyHEs9DCJFX6zPsvJmTERdsGjMXmueuRWVzLJuRHc9uHNHadMQOScAePLYHKzkbSTQv2sVsxXg9prPf7S+xqu7TOMMWg+D05aOIFFcYisp7/dx52BidiRzQCLbbFNGK8BP5dDQ/8j1q26Phj6o0c4C7EBhrE4kyn48VSW/TBf4ynv/GwDF1sezhfGAE="}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":7483,"cache_read_input_tokens":8445,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":7483},"output_tokens":6,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"786b55fe-6aed-4c46-bb0b-80b92c2c6d35"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01H1B5MrpvndDQyjASeoKThX","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01BBVockNL4LNiC4DzEm33H5","name":"Write","input":{"file_path":"/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts","content":"import { navigatePage, takeSnapshot, clickElement } from \"./servers/chrome-devtools/index.js\";\n\n// Navigate to Ada Lovelace article\nawait navigatePage({ url: \"https://en.wikipedia.org/wiki/Ada_Lovelace\" });\nlet snap = await takeSnapshot({});\n\n// Find the Charles Babbage link\nconst babbageLink = snap.elements?.find((el: any) =>\n  el.text?.includes(\"Charles Babbage\") && el.tag === \"a\"\n);\n\nif (!babbageLink) {\n  console.log(\"Could not find Charles Babbage link, trying click by text...\");\n}\n\n// Click on the Charles Babbage link\nawait clickElement({ text: \"Charles Babbage\" });\n\n// Take snapshot of Babbage article\nsnap = await takeSnapshot({});\n\n// Look for birth date info\nconst birthElements = snap.elements?.filter((el: any) =>\n  el.text?.toLowerCase().includes(\"born\") || el.text?.includes(\"26 December\") || el.text?.includes(\"1791\")\n);\n\nconsole.log(\"Birth-related elements:\", JSON.stringify(birthElements?.slice(0, 5), null, 2));\n\n// Also print page title to confirm we're on the right page\nconst titleEl = snap.elements?.find((el: any) => el.tag === \"h1\");\nconsole.log(\"Page title:\", titleEl?.text);\n"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":7483,"cache_read_input_tokens":8445,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":7483},"output_tokens":6,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"c67883df-d607-4c68-b9da-0315dedc9531"}
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{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01Brmw7GLMzoNyTtFVqC31fn","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01AuQyKUYeWNJXgaPHz1Rwz7","name":"Bash","input":{"command":"npx tsx babbage.ts 2>&1","timeout":30000},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":564,"cache_read_input_tokens":15928,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":564},"output_tokens":63,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"a3eaebe6-db32-4359-9a57-fe394fb06bed"}
{"type":"user","message":{"role":"user","content":[{"type":"tool_result","content":"Exit code 1\n/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts:1\nimport { navigatePage, takeSnapshot, clickElement } from \"./servers/chrome-devtools/index.js\";\n                                     ^\nSyntaxError: The requested module './servers/chrome-devtools/index.js' does not provide an export named 'clickElement'\n    at #asyncInstantiate (node:internal/modules/esm/module_job:319:21)\n    at async ModuleJob.run (node:internal/modules/esm/module_job:422:5)\n    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:661:26)\n    at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:101:5)\n\nNode.js v24.13.1","is_error":true,"tool_use_id":"toolu_01AuQyKUYeWNJXgaPHz1Rwz7"}]},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"be2b5c7a-36a5-46a0-b30e-0c5a62995114","timestamp":"2026-04-07T20:04:14.931Z","tool_use_result":"Error: Exit code 1\n/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts:1\nimport { navigatePage, takeSnapshot, clickElement } from \"./servers/chrome-devtools/index.js\";\n                                     ^\nSyntaxError: The requested module './servers/chrome-devtools/index.js' does not provide an export named 'clickElement'\n    at #asyncInstantiate (node:internal/modules/esm/module_job:319:21)\n    at async ModuleJob.run (node:internal/modules/esm/module_job:422:5)\n    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:661:26)\n    at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:101:5)\n\nNode.js v24.13.1"}
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{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01BMnu1EjVBhFP1VTycYeQFD","type":"tool_result","content":"     1→// auto-generated by codegen.ts — do not edit\n     2→import { callTool } from \"../../browser-code/client.js\";\n     3→\n     4→export interface ClickInput {\n     5→  /** The uid of an element on the page from the page content snapshot */\n     6→  uid: string;\n     7→  /** Set to true for double clicks. Default is false. */\n     8→  dblClick?: boolean;\n     9→  /** Whether to include a snapshot in the response. Default is false. */\n    10→  includeSnapshot?: boolean;\n    11→}\n    12→\n    13→/** Clicks on the provided element */\n    14→export async function click(input: ClickInput): Promise<string> {\n    15→  return callTool(\"click\", input);\n    16→}\n    17→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"aa685601-6b16-4fbf-add4-143507dace29","timestamp":"2026-04-07T20:04:18.079Z","tool_use_result":{"type":"text","file":{"filePath":"/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/servers/chrome-devtools/click.ts","content":"// auto-generated by codegen.ts — do not edit\nimport { callTool } from \"../../browser-code/client.js\";\n\nexport interface ClickInput {\n  /** The uid of an element on the page from the page content snapshot */\n  uid: string;\n  /** Set to true for double clicks. Default is false. */\n  dblClick?: boolean;\n  /** Whether to include a snapshot in the response. Default is false. */\n  includeSnapshot?: boolean;\n}\n\n/** Clicks on the provided element */\nexport async function click(input: ClickInput): Promise<string> {\n  return callTool(\"click\", input);\n}\n","numLines":17,"startLine":1,"totalLines":17}}}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_011CQvRNqf16JHrJdF62KHNw","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_017QP31uD5dZdzG28fGTCbmd","name":"Edit","input":{"replace_all":false,"file_path":"/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts","old_string":"import { navigatePage, takeSnapshot, clickElement } from \"./servers/chrome-devtools/index.js\";","new_string":"import { navigatePage, takeSnapshot } from \"./servers/chrome-devtools/index.js\";\nimport { click } from \"./servers/chrome-devtools/click.js\";\nimport { evaluateScript } from \"./servers/chrome-devtools/evaluateScript.js\";"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":2144,"cache_read_input_tokens":16831,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":2144},"output_tokens":59,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"45dbfbbe-a39c-42d7-bb47-bf5e8273ae56"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_017QP31uD5dZdzG28fGTCbmd","type":"tool_result","content":"The file /Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts has been updated successfully."}]},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"3e92c3cf-add8-423e-abfe-189cbe391f29","timestamp":"2026-04-07T20:04:21.316Z","tool_use_result":{"filePath":"/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts","oldString":"import { navigatePage, takeSnapshot, clickElement } from \"./servers/chrome-devtools/index.js\";","newString":"import { navigatePage, takeSnapshot } from \"./servers/chrome-devtools/index.js\";\nimport { click } from \"./servers/chrome-devtools/click.js\";\nimport { evaluateScript } from \"./servers/chrome-devtools/evaluateScript.js\";","originalFile":"import { navigatePage, takeSnapshot, clickElement } from \"./servers/chrome-devtools/index.js\";\n\n// Navigate to Ada Lovelace article\nawait navigatePage({ url: \"https://en.wikipedia.org/wiki/Ada_Lovelace\" });\nlet snap = await takeSnapshot({});\n\n// Find the Charles Babbage link\nconst babbageLink = snap.elements?.find((el: any) =>\n  el.text?.includes(\"Charles Babbage\") && el.tag === \"a\"\n);\n\nif (!babbageLink) {\n  console.log(\"Could not find Charles Babbage link, trying click by text...\");\n}\n\n// Click on the Charles Babbage link\nawait clickElement({ text: \"Charles Babbage\" });\n\n// Take snapshot of Babbage article\nsnap = await takeSnapshot({});\n\n// Look for birth date info\nconst birthElements = snap.elements?.filter((el: any) =>\n  el.text?.toLowerCase().includes(\"born\") || el.text?.includes(\"26 December\") || el.text?.includes(\"1791\")\n);\n\nconsole.log(\"Birth-related elements:\", JSON.stringify(birthElements?.slice(0, 5), null, 2));\n\n// Also print page title to confirm we're on the right page\nconst titleEl = snap.elements?.find((el: any) => el.tag === \"h1\");\nconsole.log(\"Page title:\", titleEl?.text);\n","structuredPatch":[{"oldStart":1,"oldLines":4,"newStart":1,"newLines":6,"lines":["-import { navigatePage, takeSnapshot, clickElement } from \"./servers/chrome-devtools/index.js\";","+import { navigatePage, takeSnapshot } from \"./servers/chrome-devtools/index.js\";","+import { click } from \"./servers/chrome-devtools/click.js\";","+import { evaluateScript } from \"./servers/chrome-devtools/evaluateScript.js\";"," "," // Navigate to Ada Lovelace article"," await navigatePage({ url: \"https://en.wikipedia.org/wiki/Ada_Lovelace\" });"]}],"userModified":false,"replaceAll":false}}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01E5Ab6Jxk315eJW1Xku9yZe","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01Y8XaJLmXyaS2zPyGeGT3LB","name":"Read","input":{"file_path":"/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/servers/chrome-devtools/takeSnapshot.ts"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":306,"cache_read_input_tokens":18975,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":306},"output_tokens":59,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"7c5936ea-ebb7-439c-8347-1300cd174bc5"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01Y8XaJLmXyaS2zPyGeGT3LB","type":"tool_result","content":"     1→// auto-generated by codegen.ts — do not edit\n     2→import { callTool } from \"../../browser-code/client.js\";\n     3→import { resolve } from \"node:path\";\n     4→\n     5→export interface TakeSnapshotInput {\n     6→  /** Whether to include all possible information available in the full a11y tree. Default is false. */\n     7→  verbose?: boolean;\n     8→  /** The absolute path, or a path relative to the current working directory, to save the snapshot to instead of attaching it to the response. */\n     9→  filePath?: string;\n    10→}\n    11→\n    12→/** Take a text snapshot of the currently selected page based on the a11y tree. The snapshot lists page elements along with a unique\n    13→identifier (uid). Always use the latest snapshot. Prefer taking a snapshot over taking a screenshot. The snapshot indicates the element selected\n    14→in the DevTools Elements panel (if any). */\n    15→export async function takeSnapshot(input: TakeSnapshotInput = {}): Promise<string> {\n    16→  if (input.filePath && !input.filePath.startsWith(\"/\")) {\n    17→    input = { ...input, filePath: resolve(input.filePath) };\n    18→  }\n    19→  return callTool(\"take_snapshot\", input);\n    20→}\n    21→\n\n<system-reminder>\nWhenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.\n</system-reminder>\n"}]},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"761fa0cd-a715-4037-b839-2b18781050bb","timestamp":"2026-04-07T20:04:23.569Z","tool_use_result":{"type":"text","file":{"filePath":"/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/servers/chrome-devtools/takeSnapshot.ts","content":"// auto-generated by codegen.ts — do not edit\nimport { callTool } from \"../../browser-code/client.js\";\nimport { resolve } from \"node:path\";\n\nexport interface TakeSnapshotInput {\n  /** Whether to include all possible information available in the full a11y tree. Default is false. */\n  verbose?: boolean;\n  /** The absolute path, or a path relative to the current working directory, to save the snapshot to instead of attaching it to the response. */\n  filePath?: string;\n}\n\n/** Take a text snapshot of the currently selected page based on the a11y tree. The snapshot lists page elements along with a unique\nidentifier (uid). Always use the latest snapshot. Prefer taking a snapshot over taking a screenshot. The snapshot indicates the element selected\nin the DevTools Elements panel (if any). */\nexport async function takeSnapshot(input: TakeSnapshotInput = {}): Promise<string> {\n  if (input.filePath && !input.filePath.startsWith(\"/\")) {\n    input = { ...input, filePath: resolve(input.filePath) };\n  }\n  return callTool(\"take_snapshot\", input);\n}\n","numLines":21,"startLine":1,"totalLines":21}}}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01SPgL7HVH9XyW14fRt2y8Rr","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"The takeSnapshot returns a string (the a11y tree), not an object with elements. Let me rewrite the script to parse it properly, using evaluateScript to find the link and get birth date info.","signature":" "}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":839,"cache_read_input_tokens":18975,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":839},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"dbdfce64-b611-4e6f-a8d9-a836b6ca239b"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01SPgL7HVH9XyW14fRt2y8Rr","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01WkDBo49nXyJ9AzkDgdSsBh","name":"Write","input":{"file_path":"/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts","content":"import { navigatePage, takeSnapshot } from \"./servers/chrome-devtools/index.js\";\nimport { click } from \"./servers/chrome-devtools/click.js\";\nimport { evaluateScript } from \"./servers/chrome-devtools/evaluateScript.js\";\n\n// Navigate to Ada Lovelace article\nawait navigatePage({ url: \"https://en.wikipedia.org/wiki/Ada_Lovelace\" });\nlet snap = await takeSnapshot({});\n\n// Find uid of Charles Babbage link in snapshot\n// The snapshot is a string - find lines with Charles Babbage\nconst lines = snap.split(\"\\n\");\nconst babbageLine = lines.find(l => l.includes(\"Charles Babbage\") && l.includes(\"link\"));\nconsole.log(\"Babbage link line:\", babbageLine);\n\n// Extract uid from the line (format: uid=XXX)\nconst uidMatch = babbageLine?.match(/\\[(\\d+)\\]/);\nconst uid = uidMatch?.[1];\nconsole.log(\"UID:\", uid);\n\nif (!uid) {\n  console.log(\"Snapshot excerpt around Babbage:\");\n  const idx = lines.findIndex(l => l.includes(\"Charles Babbage\"));\n  console.log(lines.slice(Math.max(0, idx-2), idx+3).join(\"\\n\"));\n  process.exit(1);\n}\n\n// Click on the Charles Babbage link\nawait click({ uid });\n\n// Take snapshot of Babbage's article\nsnap = await takeSnapshot({});\n\n// Find birth date - look for infobox with born date\nconst snapLines = snap.split(\"\\n\");\nconst bornLine = snapLines.find(l => l.toLowerCase().includes(\"born\") || l.includes(\"26 December\"));\nconsole.log(\"Born line:\", bornLine);\n\n// Print surrounding lines for context\nconst bornIdx = snapLines.findIndex(l => l.toLowerCase().includes(\"born\"));\nif (bornIdx >= 0) {\n  console.log(\"Context around 'born':\");\n  console.log(snapLines.slice(bornIdx, bornIdx + 5).join(\"\\n\"));\n}\n\n// Also use JS to extract from page\nconst birthDate = await evaluateScript({\n  script: `function() {\n    // Try to get from infobox\n    const rows = document.querySelectorAll('.infobox tr');\n    for (const row of rows) {\n      const th = row.querySelector('th');\n      if (th && th.textContent.includes('Born')) {\n        return row.textContent.trim();\n      }\n    }\n    // Try bday span\n    const bday = document.querySelector('.bday');\n    return bday ? bday.textContent : 'not found';\n  }`\n});\nconsole.log(\"Birth date from page:\", birthDate);\n"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":839,"cache_read_input_tokens":18975,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":839},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"2697ef51-86d4-4b55-bf83-c04b24c16572"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01WkDBo49nXyJ9AzkDgdSsBh","type":"tool_result","content":"The file /Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts has been updated successfully."}]},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"683fdade-c823-4f32-8b56-740b78c8fffc","timestamp":"2026-04-07T20:04:35.637Z","tool_use_result":{"type":"update","filePath":"/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts","content":"import { navigatePage, takeSnapshot } from \"./servers/chrome-devtools/index.js\";\nimport { click } from \"./servers/chrome-devtools/click.js\";\nimport { evaluateScript } from \"./servers/chrome-devtools/evaluateScript.js\";\n\n// Navigate to Ada Lovelace article\nawait navigatePage({ url: \"https://en.wikipedia.org/wiki/Ada_Lovelace\" });\nlet snap = await takeSnapshot({});\n\n// Find uid of Charles Babbage link in snapshot\n// The snapshot is a string - find lines with Charles Babbage\nconst lines = snap.split(\"\\n\");\nconst babbageLine = lines.find(l => l.includes(\"Charles Babbage\") && l.includes(\"link\"));\nconsole.log(\"Babbage link line:\", babbageLine);\n\n// Extract uid from the line (format: uid=XXX)\nconst uidMatch = babbageLine?.match(/\\[(\\d+)\\]/);\nconst uid = uidMatch?.[1];\nconsole.log(\"UID:\", uid);\n\nif (!uid) {\n  console.log(\"Snapshot excerpt around Babbage:\");\n  const idx = lines.findIndex(l => l.includes(\"Charles Babbage\"));\n  console.log(lines.slice(Math.max(0, idx-2), idx+3).join(\"\\n\"));\n  process.exit(1);\n}\n\n// Click on the Charles Babbage link\nawait click({ uid });\n\n// Take snapshot of Babbage's article\nsnap = await takeSnapshot({});\n\n// Find birth date - look for infobox with born date\nconst snapLines = snap.split(\"\\n\");\nconst bornLine = snapLines.find(l => l.toLowerCase().includes(\"born\") || l.includes(\"26 December\"));\nconsole.log(\"Born line:\", bornLine);\n\n// Print surrounding lines for context\nconst bornIdx = snapLines.findIndex(l => l.toLowerCase().includes(\"born\"));\nif (bornIdx >= 0) {\n  console.log(\"Context around 'born':\");\n  console.log(snapLines.slice(bornIdx, bornIdx + 5).join(\"\\n\"));\n}\n\n// Also use JS to extract from page\nconst birthDate = await evaluateScript({\n  script: `function() {\n    // Try to get from infobox\n    const rows = document.querySelectorAll('.infobox tr');\n    for (const row of rows) {\n      const th = row.querySelector('th');\n      if (th && th.textContent.includes('Born')) {\n        return row.textContent.trim();\n      }\n    }\n    // Try bday span\n    const bday = document.querySelector('.bday');\n    return bday ? bday.textContent : 'not found';\n  }`\n});\nconsole.log(\"Birth date from page:\", birthDate);\n","structuredPatch":[{"oldStart":6,"oldLines":28,"newStart":6,"newLines":56,"lines":[" await navigatePage({ url: \"https://en.wikipedia.org/wiki/Ada_Lovelace\" });"," let snap = await takeSnapshot({});"," ","-// Find the Charles Babbage link","-const babbageLink = snap.elements?.find((el: any) =>","-  el.text?.includes(\"Charles Babbage\") && el.tag === \"a\"","-);","+// Find uid of Charles Babbage link in snapshot","+// The snapshot is a string - find lines with Charles Babbage","+const lines = snap.split(\"\\n\");","+const babbageLine = lines.find(l => l.includes(\"Charles Babbage\") && l.includes(\"link\"));","+console.log(\"Babbage link line:\", babbageLine);"," ","-if (!babbageLink) {","-  console.log(\"Could not find Charles Babbage link, trying click by text...\");","+// Extract uid from the line (format: uid=XXX)","+const uidMatch = babbageLine?.match(/\\[(\\d+)\\]/);","+const uid = uidMatch?.[1];","+console.log(\"UID:\", uid);","+","+if (!uid) {","+  console.log(\"Snapshot excerpt around Babbage:\");","+  const idx = lines.findIndex(l => l.includes(\"Charles Babbage\"));","+  console.log(lines.slice(Math.max(0, idx-2), idx+3).join(\"\\n\"));","+  process.exit(1);"," }"," "," // Click on the Charles Babbage link","-await clickElement({ text: \"Charles Babbage\" });","+await click({ uid });"," ","-// Take snapshot of Babbage article","+// Take snapshot of Babbage's article"," snap = await takeSnapshot({});"," ","-// Look for birth date info","-const birthElements = snap.elements?.filter((el: any) =>","-  el.text?.toLowerCase().includes(\"born\") || el.text?.includes(\"26 December\") || el.text?.includes(\"1791\")","-);","+// Find birth date - look for infobox with born date","+const snapLines = snap.split(\"\\n\");","+const bornLine = snapLines.find(l => l.toLowerCase().includes(\"born\") || l.includes(\"26 December\"));","+console.log(\"Born line:\", bornLine);"," ","-console.log(\"Birth-related elements:\", JSON.stringify(birthElements?.slice(0, 5), null, 2));","+// Print surrounding lines for context","+const bornIdx = snapLines.findIndex(l => l.toLowerCase().includes(\"born\"));","+if (bornIdx >= 0) {","+  console.log(\"Context around 'born':\");","+  console.log(snapLines.slice(bornIdx, bornIdx + 5).join(\"\\n\"));","+}"," ","-// Also print page title to confirm we're on the right page","-const titleEl = snap.elements?.find((el: any) => el.tag === \"h1\");","-console.log(\"Page title:\", titleEl?.text);","+// Also use JS to extract from page","+const birthDate = await evaluateScript({","+  script: `function() {","+    // Try to get from infobox","+    const rows = document.querySelectorAll('.infobox tr');","+    for (const row of rows) {","+      const th = row.querySelector('th');","+      if (th && th.textContent.includes('Born')) {","+        return row.textContent.trim();","+      }","+    }","+    // Try bday span","+    const bday = document.querySelector('.bday');","+    return bday ? bday.textContent : 'not found';","+  }`","+});","+console.log(\"Birth date from page:\", birthDate);"]}],"originalFile":"import { navigatePage, takeSnapshot } from \"./servers/chrome-devtools/index.js\";\nimport { click } from \"./servers/chrome-devtools/click.js\";\nimport { evaluateScript } from \"./servers/chrome-devtools/evaluateScript.js\";\n\n// Navigate to Ada Lovelace article\nawait navigatePage({ url: \"https://en.wikipedia.org/wiki/Ada_Lovelace\" });\nlet snap = await takeSnapshot({});\n\n// Find the Charles Babbage link\nconst babbageLink = snap.elements?.find((el: any) =>\n  el.text?.includes(\"Charles Babbage\") && el.tag === \"a\"\n);\n\nif (!babbageLink) {\n  console.log(\"Could not find Charles Babbage link, trying click by text...\");\n}\n\n// Click on the Charles Babbage link\nawait clickElement({ text: \"Charles Babbage\" });\n\n// Take snapshot of Babbage article\nsnap = await takeSnapshot({});\n\n// Look for birth date info\nconst birthElements = snap.elements?.filter((el: any) =>\n  el.text?.toLowerCase().includes(\"born\") || el.text?.includes(\"26 December\") || el.text?.includes(\"1791\")\n);\n\nconsole.log(\"Birth-related elements:\", JSON.stringify(birthElements?.slice(0, 5), null, 2));\n\n// Also print page title to confirm we're on the right page\nconst titleEl = snap.elements?.find((el: any) => el.tag === \"h1\");\nconsole.log(\"Page title:\", titleEl?.text);\n"}}
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{"type":"user","message":{"role":"user","content":[{"type":"tool_result","content":"Exit code 1\nBabbage link line:     uid=116_181 link \"Charles Babbage\" url=\"https://en.wikipedia.org/wiki/Charles_Babbage\"\nUID: undefined\nSnapshot excerpt around Babbage:\n      uid=116_179 StaticText \"writer\"\n    uid=116_180 StaticText \" chiefly known for work on \"\n    uid=116_181 link \"Charles Babbage\" url=\"https://en.wikipedia.org/wiki/Charles_Babbage\"\n      uid=116_182 StaticText \"Charles Babbage\"\n    uid=116_183 StaticText \"'s proposed mechanical general-purpose \"","is_error":true,"tool_use_id":"toolu_0192TdvZhR7Vw2FRb74xEFSG"}]},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"d47e2f7e-6f3a-42ce-ae71-5a21edbc7705","timestamp":"2026-04-07T20:04:38.397Z","tool_use_result":"Error: Exit code 1\nBabbage link line:     uid=116_181 link \"Charles Babbage\" url=\"https://en.wikipedia.org/wiki/Charles_Babbage\"\nUID: undefined\nSnapshot excerpt around Babbage:\n      uid=116_179 StaticText \"writer\"\n    uid=116_180 StaticText \" chiefly known for work on \"\n    uid=116_181 link \"Charles Babbage\" url=\"https://en.wikipedia.org/wiki/Charles_Babbage\"\n      uid=116_182 StaticText \"Charles Babbage\"\n    uid=116_183 StaticText \"'s proposed mechanical general-purpose \""}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01TyubU9F22owwLKr7wWzs2L","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"The uid format is `116_181`, not just a number. Let me fix the regex.","signature":"EoICClsIDBgCKkB71vS57GQU5pnc6dRcOqA/Zc9SED5y43ehgsUqABrA6HDgMBwtEgCzzL9ujFGJpPwvQcT9w2H+JVlRtYCxQDh1MhFjbGF1ZGUtc29ubmV0LTQtNjgAEgys14wh6Ae+pZtpBpkaDJwIbGprddn7HjbNnCIwGd8zoCZRKYs3gBp1oV0EAL55gxp1zWqk374vM9Hsb5VYvmu4csNvHBE1gP8g+fLhKlUB6YtEalOa2xXEZxVQTT2/7JlEO9LCPQNqPL72iA+ILHQfFi9eNw7T7kBOL2bOHF2il5FbMQa/IGE1zl06SekSvVCwywiIcuACka83t6A/tYIFMX1FGAE="}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":259,"cache_read_input_tokens":20725,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":259},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"d6e2a64c-f540-4bab-8e38-6d0d2213ec0a"}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01TyubU9F22owwLKr7wWzs2L","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01F9pWSKAFjMSip1B4NuvuPG","name":"Edit","input":{"replace_all":false,"file_path":"/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts","old_string":"const uidMatch = babbageLine?.match(/\\[(\\d+)\\]/);\nconst uid = uidMatch?.[1];","new_string":"const uidMatch = babbageLine?.match(/uid=([\\w_]+)/);\nconst uid = uidMatch?.[1];"},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":259,"cache_read_input_tokens":20725,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":259},"output_tokens":8,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"3a204a49-5b09-4ebc-a19a-2bdf8e23b125"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01F9pWSKAFjMSip1B4NuvuPG","type":"tool_result","content":"The file /Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts has been updated successfully."}]},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"68549c92-0fdf-40f9-acb5-c8ce90404af6","timestamp":"2026-04-07T20:04:41.805Z","tool_use_result":{"filePath":"/Users/kunchen/github/kunchenguid/axi/bench-browser/results/chrome-devtools-mcp-code/wikipedia_link_follow/run1/workspace/babbage.ts","oldString":"const uidMatch = babbageLine?.match(/\\[(\\d+)\\]/);\nconst uid = uidMatch?.[1];","newString":"const uidMatch = babbageLine?.match(/uid=([\\w_]+)/);\nconst uid = uidMatch?.[1];","originalFile":"import { navigatePage, takeSnapshot } from \"./servers/chrome-devtools/index.js\";\nimport { click } from \"./servers/chrome-devtools/click.js\";\nimport { evaluateScript } from \"./servers/chrome-devtools/evaluateScript.js\";\n\n// Navigate to Ada Lovelace article\nawait navigatePage({ url: \"https://en.wikipedia.org/wiki/Ada_Lovelace\" });\nlet snap = await takeSnapshot({});\n\n// Find uid of Charles Babbage link in snapshot\n// The snapshot is a string - find lines with Charles Babbage\nconst lines = snap.split(\"\\n\");\nconst babbageLine = lines.find(l => l.includes(\"Charles Babbage\") && l.includes(\"link\"));\nconsole.log(\"Babbage link line:\", babbageLine);\n\n// Extract uid from the line (format: uid=XXX)\nconst uidMatch = babbageLine?.match(/\\[(\\d+)\\]/);\nconst uid = uidMatch?.[1];\nconsole.log(\"UID:\", uid);\n\nif (!uid) {\n  console.log(\"Snapshot excerpt around Babbage:\");\n  const idx = lines.findIndex(l => l.includes(\"Charles Babbage\"));\n  console.log(lines.slice(Math.max(0, idx-2), idx+3).join(\"\\n\"));\n  process.exit(1);\n}\n\n// Click on the Charles Babbage link\nawait click({ uid });\n\n// Take snapshot of Babbage's article\nsnap = await takeSnapshot({});\n\n// Find birth date - look for infobox with born date\nconst snapLines = snap.split(\"\\n\");\nconst bornLine = snapLines.find(l => l.toLowerCase().includes(\"born\") || l.includes(\"26 December\"));\nconsole.log(\"Born line:\", bornLine);\n\n// Print surrounding lines for context\nconst bornIdx = snapLines.findIndex(l => l.toLowerCase().includes(\"born\"));\nif (bornIdx >= 0) {\n  console.log(\"Context around 'born':\");\n  console.log(snapLines.slice(bornIdx, bornIdx + 5).join(\"\\n\"));\n}\n\n// Also use JS to extract from page\nconst birthDate = await evaluateScript({\n  script: `function() {\n    // Try to get from infobox\n    const rows = document.querySelectorAll('.infobox tr');\n    for (const row of rows) {\n      const th = row.querySelector('th');\n      if (th && th.textContent.includes('Born')) {\n        return row.textContent.trim();\n      }\n    }\n    // Try bday span\n    const bday = document.querySelector('.bday');\n    return bday ? bday.textContent : 'not found';\n  }`\n});\nconsole.log(\"Birth date from page:\", birthDate);\n","structuredPatch":[{"oldStart":13,"oldLines":7,"newStart":13,"newLines":7,"lines":[" console.log(\"Babbage link line:\", babbageLine);"," "," // Extract uid from the line (format: uid=XXX)","-const uidMatch = babbageLine?.match(/\\[(\\d+)\\]/);","+const uidMatch = babbageLine?.match(/uid=([\\w_]+)/);"," const uid = uidMatch?.[1];"," console.log(\"UID:\", uid);"," "]}],"userModified":false,"replaceAll":false}}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_019i4Aoj4Rm9eDVuR66HDbHv","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01GDzLQxTfrn32Vm7Mb854h4","name":"Bash","input":{"command":"npx tsx babbage.ts 2>&1","timeout":60000},"caller":{"type":"direct"}}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":316,"cache_read_input_tokens":20984,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":316},"output_tokens":63,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"c86e694c-e1f4-4538-974a-dff2e9a176b4"}
{"type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01GDzLQxTfrn32Vm7Mb854h4","type":"tool_result","content":"Babbage link line:     uid=117_181 link \"Charles Babbage\" url=\"https://en.wikipedia.org/wiki/Charles_Babbage\"\nUID: 117_181\nBorn line:     uid=118_123 StaticText \"Born\"\nContext around 'born':\n    uid=118_123 StaticText \"Born\"\n    uid=118_124 StaticText \"26 December 1791\"\n    uid=118_125 LineBreak \"\n\"\n    uid=118_126 StaticText \"London, England\"\nBirth date from page: Script ran on page and returned:\n```json\n\"Born(1791-12-26)26 December 1791London, England\"\n```","is_error":false}]},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"fd871a90-5132-478f-9e88-ecf98d1e0f16","timestamp":"2026-04-07T20:04:44.887Z","tool_use_result":{"stdout":"Babbage link line:     uid=117_181 link \"Charles Babbage\" url=\"https://en.wikipedia.org/wiki/Charles_Babbage\"\nUID: 117_181\nBorn line:     uid=118_123 StaticText \"Born\"\nContext around 'born':\n    uid=118_123 StaticText \"Born\"\n    uid=118_124 StaticText \"26 December 1791\"\n    uid=118_125 LineBreak \"\n\"\n    uid=118_126 StaticText \"London, England\"\nBirth date from page: Script ran on page and returned:\n```json\n\"Born(1791-12-26)26 December 1791London, England\"\n```","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false}}
{"type":"assistant","message":{"model":"claude-sonnet-4-6","id":"msg_01V2rcmRDBjxhLjX3yFhUUk1","type":"message","role":"assistant","content":[{"type":"text","text":"Charles Babbage's birth date, as reported in his Wikipedia article, is **26 December 1791** (born in London, England)."}],"stop_reason":null,"stop_sequence":null,"stop_details":null,"usage":{"input_tokens":1,"cache_creation_input_tokens":367,"cache_read_input_tokens":21300,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":367},"output_tokens":1,"service_tier":"standard","inference_geo":"not_available"},"context_management":null},"parent_tool_use_id":null,"session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","uuid":"7d732376-2e68-42a3-b8b2-5247ee426c28"}
{"type":"result","subtype":"success","is_error":false,"duration_ms":43486,"duration_api_ms":40294,"num_turns":11,"result":"Charles Babbage's birth date, as reported in his Wikipedia article, is **26 December 1791** (born in London, England).","stop_reason":"end_turn","session_id":"1069c933-a6b9-4ea5-b7de-fb03f27c57be","total_cost_usd":0.1535268,"usage":{"input_tokens":12,"cache_creation_input_tokens":15610,"cache_read_input_tokens":194961,"output_tokens":2431,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":15610,"ephemeral_5m_input_tokens":0},"inference_geo":"","iterations":[],"speed":"standard"},"modelUsage":{"claude-sonnet-4-6":{"inputTokens":12,"outputTokens":2431,"cacheReadInputTokens":194961,"cacheCreationInputTokens":15610,"webSearchRequests":0,"costUSD":0.1535268,"contextWindow":200000,"maxOutputTokens":32000}},"permission_denials":[],"fast_mode_state":"off","uuid":"9a6bd8eb-5a80-4cf3-823d-e9b3113bc6f8"}
