{
  "schemaVersion": 2,
  "id": "assistant",
  "title": "Optional browser assistant tools",
  "video": "assistant.mp4",
  "poster": "assistant-poster.jpg",
  "captions": "assistant.vtt",
  "srt": "assistant.srt",
  "subtitleLog": "assistant.json",
  "sourceMaster": "output/video-masters-narrated/assistant.mp4",
  "fps": 30,
  "frameIndexConvention": "zero-based; start inclusive, end exclusive",
  "width": 1280,
  "height": 1040,
  "screenHeight": 800,
  "frameCount": 1192,
  "durationSeconds": 39.733333333333334,
  "captionsBurnedIn": true,
  "audioTracks": 1,
  "exampleDate": "2026-09-24",
  "capture": "Live Chromium Page.startScreencast frames; resampled to constant frame rate without cutting or speeding up actions.",
  "nativeDialogs": "OS file pickers are not captured. Cues explicitly identify file-selection steps.",
  "demoNote": "Recording of an explicitly labeled integration harness calling the actual app handlers; not a native browser-assistant interface.",
  "cues": [
    {
      "id": "assistant-01",
      "helpStep": 1,
      "stepTitle": "Use a compatible browser assistant",
      "text": "Integration demo: this labeled test panel calls the real app handlers, not a native assistant UI.",
      "narrationText": "Integration demo: this labeled test panel calls the real app handlers, not a native assistant UI.",
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      "endFrameExclusive": 188,
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      "addedHoldFrames": 4,
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        "voice": "Niki",
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    {
      "id": "assistant-02",
      "helpStep": 1,
      "stepTitle": "Use a compatible browser assistant",
      "text": "In normal use, a compatible browser assistant must expose these optional tools.",
      "narrationText": "In normal use, a compatible browser assistant must expose these optional tools.",
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        {
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      ],
      "originalStartFrame": 184,
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      "addedHoldFrames": 0,
      "narration": {
        "voice": "Niki",
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    },
    {
      "id": "assistant-03",
      "helpStep": 2,
      "stepTitle": "Read tasks with list_tasks",
      "text": "list_tasks reads saved task details and IDs without changing them.",
      "narrationText": "list_tasks reads saved task details and IDs without changing them.",
      "startFrame": 343,
      "endFrameExclusive": 494,
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      "actions": [
        {
          "action": "click",
          "target": "#list-tool"
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        {
          "action": "highlight",
          "target": "#result"
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      ],
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    {
      "id": "assistant-04",
      "helpStep": 3,
      "stepTitle": "Create a task with create_task",
      "text": "create_task accepts a title plus optional notes, list, priority, and due date.",
      "narrationText": "create_task accepts a title plus optional notes, list, priority, and due date.",
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      "actions": [
        {
          "action": "highlight",
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    {
      "id": "assistant-05",
      "helpStep": 3,
      "stepTitle": "Create a task with create_task",
      "text": "Run create_task. The actual app saves the new task and shows All tasks.",
      "narrationText": "Run create_task. The actual app saves the new task and shows All tasks.",
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      "actions": [
        {
          "action": "click",
          "target": "#create-tool"
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        {
          "action": "highlight",
          "target": "#result"
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      ],
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      "id": "assistant-06",
      "helpStep": 4,
      "stepTitle": "Change status with set_task_completed",
      "text": "set_task_completed uses a task ID and true or false to complete or reopen it.",
      "narrationText": "set_task_completed uses a task ID and true or false to complete or reopen it.",
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          "target": "#complete-tool"
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      ],
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    {
      "id": "assistant-07",
      "helpStep": 5,
      "stepTitle": "Verify the result in the app",
      "text": "Verify the checked task in the app. Without tool support, use the normal task interface.",
      "narrationText": "Verify the checked task in the app. Without tool support, use the normal task interface.",
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    "language": "en",
    "description": "Friendly American narration",
    "generatedSpeech": true,
    "model": "eleven_multilingual_v2",
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    "codec": "AAC",
    "audioFile": "assistant-narration.m4a",
    "trackMaster": "output/narration/tracks/assistant.wav",
    "alignment": "Each original cue plays at its original pace. End-frame holds extend cues when needed for natural speech, with 100 ms lead-in and at least 150 ms end clearance. Audio is never truncated or sped up.",
    "timingConvention": "Audio sample indices at 48000 Hz are exact; covering video frame ranges are rounded outward."
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}