mikrotik_update_filter_rule · MikroTik Cursor MCP

WHAT IT DOES

What mikrotik_update_filter_rule does on MikroTik Cursor MCP

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

WHY IT NEEDS A POLICY

Why mikrotik_update_filter_rule needs a policy

The tool modifies firewall rules, which is a critical network security function, but the operation is reversible (rules can be updated again or reverted). This qualifies as Write rather than Execute or Destructive. However, the blast radius is high because misconfigured firewall rules could disrupt network connectivity, expose network segments, or enable unauthorized access.

From the tool's definition Tool name contains 'update' and description states 'Updates an existing firewall filter rule on MikroTik device' — this modifies network security configuration reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mikrotik_update_filter_rule Rate-limited

mikrotik_update_filter_rule 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": {
    "mikrotik_update_filter_rule": {
      "limits": [
        {
          "counter": "mikrotik_update_filter_rule_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 MikroTik Cursor MCP, so you can run agents against it safely.

FAQ

Questions about mikrotik_update_filter_rule

What does the mikrotik_update_filter_rule tool do? +

Updates an existing firewall filter rule on MikroTik device. It is categorised as a Write tool in the MikroTik Cursor MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mikrotik_update_filter_rule? +

Register the MikroTik Cursor MCP server in PolicyLayer and add a rule for mikrotik_update_filter_rule: 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 MikroTik Cursor MCP. Nothing to install.

What risk level is mikrotik_update_filter_rule? +

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

Can I rate-limit mikrotik_update_filter_rule? +

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

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

mikrotik_update_filter_rule is provided by the MikroTik Cursor MCP server (kevinpez/mikrotik-cursor-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.