{
  "name": "browser_highlight",
  "description": "Highlight an element by ref in the browser page for visual grounding.",
  "arguments": {
    "type": "object",
    "properties": {
      "ref": {
        "type": "string",
        "description": "Element ref from browser_snapshot."
      },
      "element": {
        "type": "string",
        "description": "Human-readable description of the element."
      },
      "durationMs": {
        "type": "number",
        "description": "Highlight duration in milliseconds. Defaults to 2000."
      },
      "viewId": {
        "type": "string",
        "description": "Target browser tab ID. If omitted, uses the last interacted tab."
      }
    },
    "required": [
      "ref"
    ]
  }
}