Generate a mask image from a region. 为当前ROI区域生成一个蒙版图像，以指定的位置和尺寸。 White pixels in the mask image represent areas within the region. 图像中的白像素表示该位置包含在当前区域中。 If position and size are not specified (x, y, w, h all 0), the mask is generated based on the region's bounding box. 若指定的位置和尺寸均为空，即 x, y, w 和 h ...
AI agents use il_region_to_mask to create or update resources in Leaper Vision Toolkit — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Leaper Vision Toolkit environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
h | integer | — | 指定输出蒙版图像的高度 (int类型) |
w | integer | — | 指定输出蒙版图像的宽度 (int类型) |
x | integer | — | 指定输出蒙版图像的左上角 x 坐标 (int类型) |
y | integer | — | 指定输出蒙版图像的左上角 y 坐标 (int类型) |
regionClassObjDescriptionJson | string | — | 原始的Roi区域。传入一个序列化的JSON字符串，属性包括：LpvClassName(调用工具函数的名称) 和 InputParameterFile(调用工具函数需要传入的参数文件名称)。这两个属性的值可以从前处理的MCP工具的返回值中获取。LpvClassName 表示要调用的Region接口名称，根据不同的区域类型 |
Parameters from the server's own tool schema.
This tool creates a new image artifact (a mask) based on input parameters. While it modifies data (generates new image output), it is a non-destructive, reversible operation typical of image processing. The blast radius is minimal—misuse would only produce unwanted mask images, not compromise system integrity or enable further attacks.
From the tool's definition Tool generates and outputs a mask image (creates new image data); described as 'Generate a mask image from a region' and outputs 'the generated mask image' as ILImage type.
Attacks that exploit this kind of access
Generate a mask image from a region. 为当前ROI区域生成一个蒙版图像，以指定的位置和尺寸。 White pixels in the mask image represent areas within the region. 图像中的白像素表示该位置包含在当前区域中。 If position and size are not specified (x, y, w, h all 0), the mask is generated based on the region's bounding box. 若指定的位置和尺寸均为空，即 x, y, w 和 h 均为 0，则蒙版图像基于区域的包围盒位置生成。 并输出生成的蒙版图像(ILImage类型)的描述JSON。. It is categorised as a Write tool in the Leaper Vision Toolkit MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
il_region_to_mask accepts 5 parameters: h, w, x, y, regionClassObjDescriptionJson. The full parameter table on this page comes from the server's own tool schema.
Register the Leaper Vision Toolkit MCP server in PolicyLayer and add a rule for il_region_to_mask: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Leaper Vision Toolkit. Nothing to install.
il_region_to_mask is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the il_region_to_mask rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for il_region_to_mask. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
il_region_to_mask is provided by the Leaper Vision Toolkit MCP server (leaper-mcp/leaper-mcp-proxy). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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