waf_add_rule

Add a WAF rule (block URL, IP, User-Agent, etc.).

SERVERAapanel SOURCEnipunanirmal/aapanel-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aapanel-mcp/waf-add-rule.md

WHAT IT DOES

What waf_add_rule does on Aapanel

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

RISK

Why waf_add_rule is rated Medium

This tool creates/modifies firewall rules, which are reversible configuration changes (rules can be removed or edited). It does not delete data irreversibly, does not move money, and does not execute arbitrary code—it adds security policy rules.

From the tool's definition Tool name is 'waf_add_rule' and description states 'Add a WAF rule (block URL, IP, User-Agent, etc.)', which creates a new WAF (Web Application Firewall) rule configuration.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs waf_add_rule safely

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

waf_add_rule Rate-limited

waf_add_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": {
    "waf_add_rule": {
      "limits": [
        {
          "counter": "waf_add_rule_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about waf_add_rule

What does the waf_add_rule tool do? +

Add a WAF rule (block URL, IP, User-Agent, etc.). It is categorised as a Write tool in the Aapanel MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on waf_add_rule? +

Register the Aapanel MCP server in PolicyLayer and add a rule for waf_add_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 Aapanel. Nothing to install.

What risk level is waf_add_rule? +

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

Can I rate-limit waf_add_rule? +

Yes. Add a rate_limit block to the waf_add_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 waf_add_rule completely? +

Set action: deny in the PolicyLayer policy for waf_add_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 waf_add_rule? +

waf_add_rule is provided by the Aapanel MCP server (nipunanirmal/aapanel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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