open_camera_preview_tool · xigua- MCP: Risk & Policy

WHAT IT DOES

What open_camera_preview_tool does on xigua-MCP

AI agents invoke open_camera_preview_tool to trigger actions in xigua-MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why open_camera_preview_tool needs a policy

This tool activates the system camera and starts a background preview process. It is an external operation with real-world side effects (camera activation, potential privacy implications), placing it in the Execute category. It does not delete data or move money, but misuse could violate privacy by silently activating the camera.

From the tool's definition 打开摄像头实时预览窗口 (Opens a camera live preview window) — triggers an external operation (activating the camera hardware and launching a preview process) that runs in the background

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

open_camera_preview_tool Rate-limited

open_camera_preview_tool stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "open_camera_preview_tool": {
      "limits": [
        {
          "counter": "open_camera_preview_tool_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches xigua-MCP, so you can run agents against it safely.

FAQ

Questions about open_camera_preview_tool

What does the open_camera_preview_tool tool do? +

打开摄像头实时预览窗口。此工具会立即返回成功，预览在后台运行。. It is categorised as a Execute tool in the xigua-MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on open_camera_preview_tool? +

Register the xigua- MCP server in PolicyLayer and add a rule for open_camera_preview_tool: 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 xigua-MCP. Nothing to install.

What risk level is open_camera_preview_tool? +

open_camera_preview_tool is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit open_camera_preview_tool? +

Yes. Add a rate_limit block to the open_camera_preview_tool 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.

How do I block open_camera_preview_tool completely? +

Set action: deny in the PolicyLayer policy for open_camera_preview_tool. 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.

What MCP server provides open_camera_preview_tool? +

open_camera_preview_tool is provided by the xigua- MCP server (xiguaxiaome/xigua-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.