list_materials

List all materials in the scene with their base color and user count.

SERVERBlender Copilot MCP Server SOURCEdwgx/blender-copilot

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dwgx-blender-copilot/list-materials.md

WHAT IT DOES

What list_materials does on Blender Copilot MCP Server

AI agents call list_materials to retrieve information from Blender Copilot MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_materials is rated Low

This tool retrieves and enumerates existing materials in a Blender scene, displaying their properties (base color, user count). It performs no creation, modification, deletion, or external execution—purely informational data retrieval, characteristic of Read category operations.

From the tool's definition Tool name 'list_materials' and description 'List all materials in the scene with their base color and user count' indicate a query/retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

list_materials Allowed

list_materials is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_materials": {}
  }
}

ALLOW ONLY 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 list_materials call is checked against it from then on.

FAQ

Questions about list_materials

What does the list_materials tool do? +

List all materials in the scene with their base color and user count. It is categorised as a Read tool in the Blender Copilot MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_materials? +

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

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

Can I rate-limit list_materials? +

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

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

list_materials 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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