decimate

Reduce mesh polygon count. Ratio 0.5 = reduce to 50% of original faces.

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/decimate.md

WHAT IT DOES

What decimate does on Blender Copilot MCP Server

AI agents use decimate 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 decimate is rated Medium

This tool modifies 3D mesh data by decimating (reducing) polygon count. While the operation changes the model structure, it is reversible (the user can undo or re-apply with different parameters), making it a Write rather than Destructive operation.

From the tool's definition Tool description: 'Reduce mesh polygon count. Ratio 0.5 = reduce to 50% of original faces.' The tool modifies mesh geometry by altering polygon density, which is a reversible write operation in Blender.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs decimate 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 decimate, this is the rule to start with:

decimate Rate-limited

decimate 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": {
    "decimate": {
      "limits": [
        {
          "counter": "decimate_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 decimate call is checked against it from then on.

FAQ

Questions about decimate

What does the decimate tool do? +

Reduce mesh polygon count. Ratio 0.5 = reduce to 50% of original faces. 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 decimate? +

Register the Blender Copilot MCP Server MCP server in PolicyLayer and add a rule for decimate: 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 decimate? +

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

Can I rate-limit decimate? +

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

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

decimate 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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