set_network_condition · Sl Test MCP: Risk & Policy

WHAT IT DOES

What set_network_condition does on Sl Test

AI agents invoke set_network_condition to trigger actions in Sl Test. 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.

WHY IT NEEDS A POLICY

Why set_network_condition needs a policy

This tool actively triggers external operations by changing the simulator's network environment. It doesn't just read data—it modifies the runtime state of the simulator to emulate specific network conditions, which qualifies as Execute. Misuse could disrupt simulator-based testing by forcing packet loss or high latency, but the blast radius is limited to the simulator environment.

From the tool's definition Simulates different network conditions (e.g., wifi, 3g, edge, high-latency, dsl, 100%loss, 3g-lossy, very-lossy) in the simulator

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_network_condition Rate-limited

set_network_condition 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": {
    "set_network_condition": {
      "limits": [
        {
          "counter": "set_network_condition_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about set_network_condition

What does the set_network_condition tool do? +

Simulates different network conditions (e.g., wifi, 3g, edge, high-latency, dsl, 100%loss, 3g-lossy, very-lossy) in the simulator. It is categorised as a Execute tool in the Sl Test MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on set_network_condition? +

Register the Sl Test MCP server in PolicyLayer and add a rule for set_network_condition: 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 Sl Test. Nothing to install.

What risk level is set_network_condition? +

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

Can I rate-limit set_network_condition? +

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

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

set_network_condition is provided by the Sl Test MCP server (sampsonky/xcodebuildmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.