vba_custom_properties

THE RISK

High Risk

Why vba_custom_properties needs a policy

VBA (Visual Basic for Applications) code generation in the context of a SolidWorks MCP server strongly implies execution within the SolidWorks COM bridge. VBA can perform arbitrary operations including modifying models, files, and system state. Even if it only generates code without executing it, VBA for 'managing' properties implies write/execute semantics.

From the tool's definition Generate VBA for managing custom properties — generates and likely executes VBA code within SolidWorks

Documented attack patterns abuse exactly the kind of access vba_custom_properties gives an agent:

POLICY

How to control vba_custom_properties

PolicyLayer is an MCP gateway — it sits between your AI agents and SolidWorks MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for vba_custom_properties:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "vba_custom_properties": {
      "limits": [
        {
          "counter": "vba_custom_properties_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

vba_custom_properties stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register SolidWorks MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More SolidWorks MCP Server tools

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All 84 SolidWorks MCP Server tools →

Execute tools on other servers

Android Forensics ADB MCP Server adb_shell_command EMBA-MCP run_emba_scan Frida Game Hacking MCP remove_breakpoint Procmon request_elevation

Go deeper

High-risk tools in SolidWorks MCP Server → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about vba_custom_properties

What does the vba_custom_properties tool do? +

Generate VBA for managing custom properties. It is categorised as a Execute tool in the SolidWorks MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on vba_custom_properties? +

Register the SolidWorks MCP Server MCP server in PolicyLayer and add a rule for vba_custom_properties: 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 SolidWorks MCP Server. Nothing to install.

What risk level is vba_custom_properties? +

vba_custom_properties is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit vba_custom_properties? +

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

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

vba_custom_properties is provided by the SolidWorks MCP Server MCP server (jianzhichun/solidworks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every SolidWorks MCP Server tool call.

Start from SolidWorks MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →