geometry_add_feature · COMSOL MCP Server MCP: Risk & Policy

WHAT IT DOES

What geometry_add_feature does on COMSOL MCP Server

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

WHY IT NEEDS A POLICY

Why geometry_add_feature needs a policy

This tool creates or modifies geometric entities within a COMSOL simulation model. Such modifications are reversible (can be edited, deleted, or undone in a typical CAD/simulation workflow) and do not permanently destroy data or execute arbitrary code. It represents a Write operation—data creation/modification with side effects confined to the simulation model.

From the tool's definition Tool name 'geometry_add_feature' indicates creation of geometric features; sibling tools like 'geometry_add_block', 'geometry_add_circle', and 'geometry_add_cylinder' all create geometry objects in COMSOL simulations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

geometry_add_feature Rate-limited

geometry_add_feature 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": {
    "geometry_add_feature": {
      "limits": [
        {
          "counter": "geometry_add_feature_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches COMSOL MCP Server, so you can run agents against it safely.

FAQ

Questions about geometry_add_feature

What does the geometry_add_feature tool do? +

geometry_add_feature. It is categorised as a Write tool in the COMSOL MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on geometry_add_feature? +

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

What risk level is geometry_add_feature? +

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

Can I rate-limit geometry_add_feature? +

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

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

geometry_add_feature is provided by the COMSOL MCP Server MCP server (zhangyoupeng1996/codex_mcp_comsol). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.