lexq_rules_toggle · LexQ MCP: Risk & Policy

WHAT IT DOES

What lexq_rules_toggle does on LexQ

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

WHY IT NEEDS A POLICY

Why lexq_rules_toggle needs a policy

This tool modifies the state of a business rule (enabled/disabled) but does not delete it, making it reversible and thus Write rather than Destructive. However, toggling a rule in a live business rules engine can have significant blast radius — disabling a critical policy rule or enabling an incorrect one could cause widespread incorrect decisions across the system, warranting high severity.

From the tool's definition Enable or disable a rule without deleting it

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

lexq_rules_toggle Rate-limited

lexq_rules_toggle 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": {
    "lexq_rules_toggle": {
      "limits": [
        {
          "counter": "lexq_rules_toggle_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 LexQ, so you can run agents against it safely.

FAQ

Questions about lexq_rules_toggle

What does the lexq_rules_toggle tool do? +

Enable or disable a rule without deleting it. It is categorised as a Write tool in the LexQ MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on lexq_rules_toggle? +

Register the LexQ MCP server in PolicyLayer and add a rule for lexq_rules_toggle: 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 LexQ. Nothing to install.

What risk level is lexq_rules_toggle? +

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

Can I rate-limit lexq_rules_toggle? +

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

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

lexq_rules_toggle is provided by the LexQ MCP server (lexq-io/lexq-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.