ft_create_unified_expressions

Generate VRCFT Unified Expressions from existing ARKit shapes or from scratch.

SERVERBlender Copilot MCP Server SOURCEdwgx/blender-copilot

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dwgx-blender-copilot/ft-create-unified-expressions.md

WHAT IT DOES

What ft_create_unified_expressions does on Blender Copilot MCP Server

AI agents use ft_create_unified_expressions to create or update resources in Blender Copilot MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Blender Copilot MCP Server environment.

RISK

Why ft_create_unified_expressions is rated Medium

The tool creates or generates expression data (VRChat Unified Expressions format), which is a write operation that modifies the avatar's expression system. It's reversible (expressions can be deleted, modified, or regenerated), so it falls under Write rather than Destructive.

From the tool's definition Tool description states it will 'Generate VRCFT Unified Expressions' — this is a create/generate operation that produces new data (VRChat facial tracking expressions) that can be saved and used.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs ft_create_unified_expressions safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Blender Copilot MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For ft_create_unified_expressions, this is the rule to start with:

ft_create_unified_expressions Rate-limited

ft_create_unified_expressions 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": {
    "ft_create_unified_expressions": {
      "limits": [
        {
          "counter": "ft_create_unified_expressions_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Blender Copilot MCP Server, apply this rule, and every ft_create_unified_expressions call is checked against it from then on.

FAQ

Questions about ft_create_unified_expressions

What does the ft_create_unified_expressions tool do? +

Generate VRCFT Unified Expressions from existing ARKit shapes or from scratch. It is categorised as a Write tool in the Blender Copilot 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 ft_create_unified_expressions? +

Register the Blender Copilot MCP Server MCP server in PolicyLayer and add a rule for ft_create_unified_expressions: 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 Blender Copilot MCP Server. Nothing to install.

What risk level is ft_create_unified_expressions? +

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

Can I rate-limit ft_create_unified_expressions? +

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

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

ft_create_unified_expressions is provided by the Blender Copilot MCP Server MCP server (dwgx/blender-copilot). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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