remove_scalebar

THE RISK

Critical Risk

Why remove_scalebar needs a policy

The tool removes a scalebar from the project. Removal operations are typically irreversible without re-adding the scalebar manually, making this a destructive action. The blast radius is medium as it affects project calibration/measurement data but is limited in scope.

From the tool's definition Remove a scalebar by its label

Documented attack patterns abuse exactly the kind of access remove_scalebar gives an agent:

POLICY

How to control remove_scalebar

PolicyLayer is an MCP gateway — it sits between your AI agents and Metashape MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for remove_scalebar:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "remove_scalebar"
  ]
}

remove_scalebar disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register Metashape MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Metashape MCP Server tools

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All 112 Metashape MCP Server tools →

Destructive tools on other servers

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Go deeper

Critical-risk tools in Metashape MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about remove_scalebar

What does the remove_scalebar tool do? +

Remove a scalebar by its label. It is categorised as a Destructive tool in the Metashape MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on remove_scalebar? +

Register the Metashape MCP Server MCP server in PolicyLayer and add a rule for remove_scalebar: 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 Metashape MCP Server. Nothing to install.

What risk level is remove_scalebar? +

remove_scalebar is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit remove_scalebar? +

Yes. Add a rate_limit block to the remove_scalebar 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 remove_scalebar completely? +

Set action: deny in the PolicyLayer policy for remove_scalebar. 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 remove_scalebar? +

remove_scalebar is provided by the Metashape MCP Server MCP server (jenkinsm13/metashape-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Metashape MCP Server tool call.

Start from Metashape MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →