waf_disable_rule · WAF MCP Server MCP: Risk & Policy

WHAT IT DOES

What waf_disable_rule does on WAF MCP Server

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

WHY IT NEEDS A POLICY

Why waf_disable_rule needs a policy

Disabling a WAF rule modifies security posture by removing protective coverage against specific attack patterns. While reversible (making it Write rather than Destructive), misuse could leave the application vulnerable to the class of attacks that rule protects against.

From the tool's definition Tool name 'waf_disable_rule' and description 'Disable a specific ModSecurity rule by ID' directly indicate modification of WAF security configuration. This is a reversible change (rules can be re-enabled), distinguishing it from destructive deletion.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

waf_disable_rule Rate-limited

waf_disable_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_disable_rule": {
      "limits": [
        {
          "counter": "waf_disable_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 WAF MCP Server, so you can run agents against it safely.

FAQ

Questions about waf_disable_rule

What does the waf_disable_rule tool do? +

Disable a specific ModSecurity rule by ID to suppress false positives. It is categorised as a Write tool in the WAF 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 waf_disable_rule? +

Register the WAF MCP Server MCP server in PolicyLayer and add a rule for waf_disable_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 WAF MCP Server. Nothing to install.

What risk level is waf_disable_rule? +

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

Can I rate-limit waf_disable_rule? +

Yes. Add a rate_limit block to the waf_disable_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_disable_rule completely? +

Set action: deny in the PolicyLayer policy for waf_disable_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_disable_rule? +

waf_disable_rule is provided by the WAF MCP Server MCP server (kratosuae/waf_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.