add_fabric

THE RISK

Medium Risk

Why add_fabric needs a policy

The tool adds/creates a new fabric resource to a CLO3D project, which is a reversible modification. This is a Write operation (creates data) rather than Read (no retrieval), Execute (no external command execution), or Destructive (fabric can be removed). Severity is medium because a wrongly added fabric could require manual cleanup, but the action is straightforward and bounded to fabric addition.

From the tool's definition Tool description states 'Add a new fabric to the project from a .zfab or .jfab file' — this creates/adds new data (fabric) to the project.

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

POLICY

How to control add_fabric

PolicyLayer is an MCP gateway — it sits between your AI agents and CLO3D MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for add_fabric:

policy.json

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

add_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.

Create a free account and register CLO3D 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.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More CLO3D MCP Server tools

Destructive delete_pattern Delete a pattern piece from the project. Destructive new_project Create a new empty CLO3D project, clearing the current scene. Execute simulate Run cloth simulation for a number of steps. Execute open_file Open a file in CLO3D. Supports .zprj, .zpac, .avt, .obj, .fbx formats. Write assign_fabric_to_pattern Assign a fabric to a pattern piece. Write copy_pattern Duplicate a pattern piece at a given position. Write create_pattern Create a new pattern piece from vertex points. Write export_fbx Export the garment as an FBX file.

All 33 CLO3D MCP Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about add_fabric

What does the add_fabric tool do? +

Add a new fabric to the project from a .zfab or .jfab file. It is categorised as a Write tool in the CLO3D MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_fabric? +

Register the CLO3D MCP Server MCP server in PolicyLayer and add a rule for add_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 MCP Server. Nothing to install.

What risk level is add_fabric? +

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

Can I rate-limit add_fabric? +

Yes. Add a rate_limit block to the add_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 add_fabric completely? +

Set action: deny in the PolicyLayer policy for add_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 add_fabric? +

add_fabric is provided by the CLO3D MCP Server MCP server (ubani-studio/clo3d-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every CLO3D MCP Server tool call.

Start from CLO3D 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 →