flexsim_new_model · FlexSim MCP Server MCP: Risk & Policy

WHAT IT DOES

What flexsim_new_model does on FlexSim MCP Server

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

WHY IT NEEDS A POLICY

Why flexsim_new_model needs a policy

This tool creates a new blank FlexSim model, which is a write operation. It generates new data/state but does not delete existing data, execute arbitrary code, or involve financial transactions. Severity is medium because it could overwrite the current working model if unsaved work is present, but the description says 'blank model' suggesting it initializes a new empty state rather than destroying existing files.

From the tool's definition Create a new blank model

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

flexsim_new_model Rate-limited

flexsim_new_model 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": {
    "flexsim_new_model": {
      "limits": [
        {
          "counter": "flexsim_new_model_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about flexsim_new_model

What does the flexsim_new_model tool do? +

Create a new blank model. It is categorised as a Write tool in the FlexSim 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 flexsim_new_model? +

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

What risk level is flexsim_new_model? +

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

Can I rate-limit flexsim_new_model? +

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

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

flexsim_new_model is provided by the FlexSim MCP Server MCP server (sethgame/mcp_flexsim). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.