entity_trim

Trim target against cutter, keeping the segment containing (keep_x, keep_y).

SERVERAutoCAD MCP Pro SOURCEu-c4n/autocad-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/u-c4n-autocad-mcp/entity-trim.md

WHAT IT DOES

What entity_trim does on AutoCAD MCP Pro

AI agents use entity_trim to create or update resources in AutoCAD MCP Pro, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your AutoCAD MCP Pro environment.

RISK

Why entity_trim is rated Medium

This tool modifies CAD entities by trimming them to a specified boundary. While the trimmed portion is discarded, the operation is reversible via undo/redo functionality typical in CAD systems, and the entity itself is not destroyed—only altered. This is characteristic of Write operations (create/modify reversibly) rather than Destructive operations.

From the tool's definition Tool description states it trims a target entity against a cutter, keeping a specified segment. 'Trim' is a CAD operation that modifies geometry by removing portions of entities, which is a reversible modification (the original can be undone or recovered).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs entity_trim safely

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

entity_trim Rate-limited

entity_trim 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": {
    "entity_trim": {
      "limits": [
        {
          "counter": "entity_trim_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 AutoCAD MCP Pro, apply this rule, and every entity_trim call is checked against it from then on.

FAQ

Questions about entity_trim

What does the entity_trim tool do? +

Trim target against cutter, keeping the segment containing (keep_x, keep_y). It is categorised as a Write tool in the AutoCAD MCP Pro MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on entity_trim? +

Register the AutoCAD MCP Pro MCP server in PolicyLayer and add a rule for entity_trim: 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 AutoCAD MCP Pro. Nothing to install.

What risk level is entity_trim? +

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

Can I rate-limit entity_trim? +

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

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

entity_trim is provided by the AutoCAD MCP Pro MCP server (u-c4n/autocad-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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