set_network_policy · Metis Public Health MCP: Risk & Policy

WHAT IT DOES

What set_network_policy does on Metis Public Health

AI agents use set_network_policy to create or update resources in Metis Public Health — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Metis Public Health environment.

WHY IT NEEDS A POLICY

Why set_network_policy needs a policy

The tool name suggests it modifies network policies, placing it in the Write category (creates/modifies data reversibly). However, confidence is reduced to 0.6 because the description is empty and uninformative, making it impossible to determine exact scope and whether modifications could be destructive or Execute-level.

From the tool's definition Tool name 'set_network_policy' indicates modification of network configuration settings, which creates or changes network rules.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_network_policy Rate-limited

set_network_policy 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": {
    "set_network_policy": {
      "limits": [
        {
          "counter": "set_network_policy_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 Metis Public Health, so you can run agents against it safely.

FAQ

Questions about set_network_policy

What does the set_network_policy tool do? +

set_network_policy. It is categorised as a Write tool in the Metis Public Health MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_network_policy? +

Register the Metis Public Health MCP server in PolicyLayer and add a rule for set_network_policy: 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 Metis Public Health. Nothing to install.

What risk level is set_network_policy? +

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

Can I rate-limit set_network_policy? +

Yes. Add a rate_limit block to the set_network_policy 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_policy completely? +

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

set_network_policy is provided by the Metis Public Health MCP server (sveritg/metis_ph). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.