apply_modifier

Apply a modifier to permanently bake its effect into the mesh geometry.

SERVERBlender Copilot MCP Server SOURCEdwgx/blender-copilot

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dwgx-blender-copilot/apply-modifier.md

WHAT IT DOES

What apply_modifier does on Blender Copilot MCP Server

AI agents call apply_modifier to permanently remove resources in Blender Copilot MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why apply_modifier is rated Critical

Applying a modifier in Blender is a one-way, destructive operation: the modifier is removed and its effects are merged into the mesh geometry irreversibly. There is no built-in undo in a pipeline context, making this Destructive with high severity since it permanently alters 3D assets.

From the tool's definition 'permanently bake its effect into the mesh geometry' — the operation is irreversible, destroying the modifier stack and altering the base mesh permanently.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

apply_modifier Hidden

apply_modifier is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "apply_modifier"
  ]
}

RESTRICT 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 apply_modifier call is checked against it from then on.

FAQ

Questions about apply_modifier

What does the apply_modifier tool do? +

Apply a modifier to permanently bake its effect into the mesh geometry. It is categorised as a Destructive tool in the Blender Copilot MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on apply_modifier? +

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

apply_modifier is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit apply_modifier? +

Yes. Add a rate_limit block to the apply_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 apply_modifier completely? +

Set action: deny in the PolicyLayer policy for apply_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 apply_modifier? +

apply_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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