run_headless_simulation

Step 3: Execute SUMO simulation headlessly using mymap.sumocfg and output stats.xml and tripinfo.xml.

SERVERNitrostack SOURCEnitrocloudofficial/nitrostack

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/nitrostack/run-headless-simulation.md

WHAT IT DOES

What run_headless_simulation does on Nitrostack

AI agents invoke run_headless_simulation to trigger actions in Nitrostack. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why run_headless_simulation is rated High

Runs external simulation engine with file I/O, creating artifacts with uncontrolled behavior risk.

From the tool's definition Execute SUMO simulation headlessly; output stats, tripinfo files

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs run_headless_simulation safely

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

run_headless_simulation Rate-limited

run_headless_simulation 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.

View as policy code

policy.json

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

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Nitrostack, apply this rule, and every run_headless_simulation call is checked against it from then on.

FAQ

Questions about run_headless_simulation

What does the run_headless_simulation tool do? +

Step 3: Execute SUMO simulation headlessly using mymap.sumocfg and output stats.xml and tripinfo.xml. It is categorised as a Execute tool in the Nitrostack MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on run_headless_simulation? +

Register the Nitrostack MCP server in PolicyLayer and add a rule for run_headless_simulation: 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 Nitrostack. Nothing to install.

What risk level is run_headless_simulation? +

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

Can I rate-limit run_headless_simulation? +

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

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

run_headless_simulation is provided by the Nitrostack MCP server (nitrocloudofficial/nitrostack). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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