create_user · mcp-wordpress-instaWP MCP: Risk & Policy

WHAT IT DOES

What create_user does on mcp-wordpress-instaWP

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

WHY IT NEEDS A POLICY

Why create_user needs a policy

Creating a user is a write operation that modifies the WordPress user database by adding a new record. While reversible (the user can be deleted), it has moderate blast radius: an attacker could create unauthorized admin accounts, spam accounts, or accounts used for further compromise.

From the tool's definition Tool name is 'create_user' and description states 'Creates a new user'. This creates a new account/identity in a WordPress system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_user Rate-limited

create_user 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": {
    "create_user": {
      "limits": [
        {
          "counter": "create_user_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 mcp-wordpress-instaWP, so you can run agents against it safely.

FAQ

Questions about create_user

What does the create_user tool do? +

Creates a new user. It is categorised as a Write tool in the mcp-wordpress-instaWP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_user? +

Register the mcp-wordpress-instaWP MCP server in PolicyLayer and add a rule for create_user: 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 mcp-wordpress-instaWP. Nothing to install.

What risk level is create_user? +

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

Can I rate-limit create_user? +

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

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

create_user is provided by the mcp-wordpress-instaWP MCP server (pace8/mcp-wordpress). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.