set_active_material

设置当前材质（新创建的对象将使用此材质）。

SERVERPypi:best Cad SOURCEpypi:best-cad-mcp

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/io-github-lokmenower-best-cad-mcp/set-active-material.md

WHAT IT DOES

What set_active_material does on Pypi:best Cad

AI agents use set_active_material to create or update resources in Pypi:best Cad, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Pypi:best Cad environment.

RISK

Why set_active_material is rated Medium

This tool changes a document property (active material) that affects subsequent object creation. It's a Write operation because it modifies the CAD drawing state reversibly—the active material can be changed again. It's not Execute (doesn't run external code), Destructive (reversible), or Read-only.

From the tool's definition 设置当前材质（新创建的对象将使用此材质）- sets the active material property, which affects newly created objects. This modifies the CAD document state.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_active_material safely

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

set_active_material Rate-limited

set_active_material 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": {
    "set_active_material": {
      "limits": [
        {
          "counter": "set_active_material_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 Pypi:best Cad, apply this rule, and every set_active_material call is checked against it from then on.

FAQ

Questions about set_active_material

What does the set_active_material tool do? +

设置当前材质（新创建的对象将使用此材质）。. It is categorised as a Write tool in the Pypi:best Cad MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_active_material? +

Register the Pypi:best Cad MCP server in PolicyLayer and add a rule for set_active_material: 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 Pypi:best Cad. Nothing to install.

What risk level is set_active_material? +

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

Can I rate-limit set_active_material? +

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

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

set_active_material is provided by the Pypi:best Cad MCP server (pypi:best-cad-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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