assign_fabric · Clo3d MCP: Risk & Policy

WHAT IT DOES

What assign_fabric does on Clo3d

AI agents use assign_fabric 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 assign_fabric needs a policy

This tool creates or modifies design data by assigning fabric properties to pattern pieces within the CLO3D project. The action is reversible (fabrics can be reassigned or removed) and causes no permanent deletion or financial transaction.

From the tool's definition assign_fabric assigns (modifies) an existing fabric to a pattern piece, which reversibly modifies the garment design project state

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

assign_fabric Rate-limited

assign_fabric 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": {
    "assign_fabric": {
      "limits": [
        {
          "counter": "assign_fabric_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 assign_fabric

What does the assign_fabric tool do? +

Assign an existing fabric to a pattern piece. 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 assign_fabric? +

Register the Clo3d MCP server in PolicyLayer and add a rule for assign_fabric: 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 assign_fabric? +

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

Can I rate-limit assign_fabric? +

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

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

assign_fabric 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.