blender_grease_pencil

A other tool on the Blender MCP server.

SERVERBlender SOURCEsandraschi/blender-mcp

Low RISK CLASS

Category Other

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/sandraschi-blender-mcp/blender-grease-pencil.md

WHAT IT DOES

What blender_grease_pencil does on Blender

AI agents call blender_grease_pencil as a supporting operation in Blender workflows.

RISK

Why blender_grease_pencil is rated Low

The description is empty and uninformative. The name suggests interaction with Blender's Grease Pencil system, which could involve reading, writing, or executing operations. Given the server context of AI-powered Blender control, it likely writes or modifies Grease Pencil strokes/objects, but without a description, confidence is low. Defaulting to Other with lowered confidence as per rules.

From the tool's definition Tool name 'blender_grease_pencil' and empty description provide no detail on what the tool does beyond referencing Blender's Grease Pencil feature (2D/3D drawing/annotation tool).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs blender_grease_pencil safely

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

blender_grease_pencil Rate-limited

blender_grease_pencil gets a rate cap, and everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "blender_grease_pencil": {
      "limits": [
        {
          "counter": "blender_grease_pencil_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about blender_grease_pencil

What does the blender_grease_pencil tool do? +

blender_grease_pencil is a other tool on the Blender MCP server. It is categorised as a Other tool in the Blender MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on blender_grease_pencil? +

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

What risk level is blender_grease_pencil? +

blender_grease_pencil is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit blender_grease_pencil? +

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

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

blender_grease_pencil is provided by the Blender MCP server (sandraschi/blender-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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