add_modifier

Add a modifier to an object. Common types: SUBSURF, MIRROR, ARRAY, SOLIDIFY,

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/add-modifier.md

WHAT IT DOES

What add_modifier does on Blender Copilot MCP Server

AI agents use add_modifier 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 add_modifier is rated Medium

This tool creates or modifies object properties in a 3D scene reversibly. Modifiers in Blender are non-destructive (can be removed or adjusted), placing this in the Write category rather than Destructive. Severity is medium because while the changes are reversible, they affect the 3D scene state and could require manual undo/correction if applied incorrectly to many objects.

From the tool's definition Tool name 'add_modifier' and description indicate it adds a modifier to a Blender object. Modifiers are non-destructive transformations that modify object geometry and appearance.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

add_modifier Rate-limited

add_modifier 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": {
    "add_modifier": {
      "limits": [
        {
          "counter": "add_modifier_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 add_modifier call is checked against it from then on.

FAQ

Questions about add_modifier

What does the add_modifier tool do? +

Add a modifier to an object. Common types: SUBSURF, MIRROR, ARRAY, SOLIDIFY,. 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 add_modifier? +

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

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

Can I rate-limit add_modifier? +

Yes. Add a rate_limit block to the add_modifier 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_modifier completely? +

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

add_modifier 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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