BOUNDING_BOX_TOOL_NAME = "capture_bounding_boxes"
BOUNDING_BOX_TOOL = {
    "type": "function",
    "name": BOUNDING_BOX_TOOL_NAME,
    "strict": True,
    "description": (
        "Capture normalized bounding boxes for salient regions in the provided image. "
        "Each box should map to a meaningful real-world entity or text block and use clockwise point order."
    ),
    "parameters": {
        "type": "object",
        "properties": {
            "boxes": {
                "type": "array",
                "description": "List of relevant detections within the image.",
                "items": {
                    "type": "object",
                    "properties": {
                        "label": {
                            "type": "string",
                            "description": "Concise human-readable label for the detected item.",
                        },
                        "notes": {
                            "type": "string",
                            "description": "Optional sentence with clarifying details for the detection.",
                        },
                        "confidence": {
                            "type": "number",
                            "minimum": 0,
                            "maximum": 1,
                            "description": "Confidence value in the range [0,1].",
                        },
                        "bbx_2d": {
                            "type": "array",
                            "description": "Polygon with four normalized points [[x,y], ...] ordered clockwise.",
                            "minItems": 4,
                            "maxItems": 4,
                            "items": {
                                "type": "array",
                                "items": {"type": "number"},
                                "minItems": 2,
                                "maxItems": 2,
                            },
                        },
                    },
                    "required": ["label", "bbx_2d"],
                    "additionalProperties": False,
                },
            }
        },
        "required": ["boxes"],
        "additionalProperties": False,
    },
}