export_zprj · Clo3d MCP: Risk & Policy

WHAT IT DOES

What export_zprj does on Clo3d

AI agents use export_zprj to create or update resources in Clo3d — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Clo3d environment.

WHY IT NEEDS A POLICY

Why export_zprj needs a policy

This tool creates or modifies a project file (.zprj) by saving the current scene state. It is a Write operation because it creates/overwrites a data file reversibly. While the file export itself cannot cause external damage, misuse could result in accidental overwrites of existing project files or storage resource exhaustion.

From the tool's definition Save the current scene as a .zprj project file — writes/persists data to a project file in a non-destructive, reversible manner.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

export_zprj Rate-limited

export_zprj stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "export_zprj": {
      "limits": [
        {
          "counter": "export_zprj_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Clo3d, so you can run agents against it safely.

FAQ

Questions about export_zprj

What does the export_zprj tool do? +

Save the current scene as a .zprj project file. It is categorised as a Write tool in the Clo3d MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on export_zprj? +

Register the Clo3d MCP server in PolicyLayer and add a rule for export_zprj: 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 Clo3d. Nothing to install.

What risk level is export_zprj? +

export_zprj is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit export_zprj? +

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

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

export_zprj is provided by the Clo3d MCP server (lilbonner/clo3d-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.