agents_set_ntp · CyPerf MCP Server MCP: Risk & Policy

WHAT IT DOES

What agents_set_ntp does on CyPerf MCP Server

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

WHY IT NEEDS A POLICY

Why agents_set_ntp needs a policy

This tool modifies the NTP (Network Time Protocol) configuration on agents, which is a write operation that changes system settings. While reversible (configuration can be changed back), misconfiguration could disrupt time synchronization and affect test accuracy or agent coordination. Not destructive as the change can be undone.

From the tool's definition Set NTP configuration on agents

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

agents_set_ntp Rate-limited

agents_set_ntp 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": {
    "agents_set_ntp": {
      "limits": [
        {
          "counter": "agents_set_ntp_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 CyPerf MCP Server, so you can run agents against it safely.

FAQ

Questions about agents_set_ntp

What does the agents_set_ntp tool do? +

[Agents] Set NTP configuration on agents. It is categorised as a Write tool in the CyPerf 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 agents_set_ntp? +

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

What risk level is agents_set_ntp? +

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

Can I rate-limit agents_set_ntp? +

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

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

agents_set_ntp is provided by the CyPerf MCP Server MCP server (keysight/cyperf-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.