create_cfx_flow_system_live

THE RISK

High Risk

Why create_cfx_flow_system_live needs a policy

This tool executes an operation against a live running Ansys Workbench instance, creating a CFX fluid flow simulation system. It is not merely writing data to a file or database — it actively triggers external operations in a running engineering simulation environment. Misuse could corrupt an active simulation session or create unintended simulation workflows, placing it in Execute category with medium severity.

From the tool's definition 'Create a Fluid Flow (CFX) system in the running Workbench bridge' — triggers creation of a simulation system in a live/running Workbench session via scripted journal execution

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

POLICY

How to control create_cfx_flow_system_live

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

policy.json

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

create_cfx_flow_system_live 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 Ansys Workbench — 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 Ansys Workbench tools

Execute execute_workbench_script Execute Python/Workbench journal code inside the running Workbench bridge. Execute run_cfx_solver Run an Ansys CFX solver input file directly with cfx5solve.exe. Execute run_fluent_journal Run an Ansys Fluent journal directly with fluent.exe. Execute run_mapdl_input Run a Mechanical APDL input file with MAPDL. Execute run_workbench_journal Run an Ansys Workbench journal through RunWB2 as a direct batch job. Execute start_workbench_bridge Launch Workbench with the file-IPC bridge journal loaded. Execute stop_workbench_bridge Signal the Workbench bridge loop to stop. Execute create_and_run_thermal_bar_demo Create and solve a small steady thermal bar demo through direct Workbench batch.

All 29 Ansys Workbench tools →

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Go deeper

High-risk tools in Ansys Workbench → 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 create_cfx_flow_system_live

What does the create_cfx_flow_system_live tool do? +

Create a Fluid Flow (CFX) system in the running Workbench bridge. It is categorised as a Execute tool in the Ansys Workbench MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on create_cfx_flow_system_live? +

Register the Ansys Workbench MCP server in PolicyLayer and add a rule for create_cfx_flow_system_live: 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 Ansys Workbench. Nothing to install.

What risk level is create_cfx_flow_system_live? +

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

Can I rate-limit create_cfx_flow_system_live? +

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

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

create_cfx_flow_system_live is provided by the Ansys Workbench MCP server (hongwenwang36-eng/ansys-workbench-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Ansys Workbench tool call.

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

CHECK YOUR STACK →