mysql_create_user

Create a new MySQL user.

SERVERMysql SOURCEmukul975/mysql-mcp-server

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/mukul975-mysql-mcp-server/mysql-create-user.md

WHAT IT DOES

What mysql_create_user does on Mysql

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

RISK

Why mysql_create_user is rated Medium

Creating a MySQL user is a Write action that modifies database state by adding a new authentication principal. While not Destructive (user creation is theoretically reversible via DROP USER), and not Financial, this is a high-severity Write because it grants database access privileges and affects production security posture. The tool operates on a production MySQL database as stated in the server description.

From the tool's definition Tool name 'mysql_create_user' and description 'Create a new MySQL user' explicitly indicate irreversible user creation in a production MySQL database.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mysql_create_user safely

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

mysql_create_user Rate-limited

mysql_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": {
    "mysql_create_user": {
      "limits": [
        {
          "counter": "mysql_create_user_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 Mysql, apply this rule, and every mysql_create_user call is checked against it from then on.

FAQ

Questions about mysql_create_user

What does the mysql_create_user tool do? +

Create a new MySQL user. It is categorised as a Write tool in the Mysql MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mysql_create_user? +

Register the Mysql MCP server in PolicyLayer and add a rule for mysql_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 Mysql. Nothing to install.

What risk level is mysql_create_user? +

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

Can I rate-limit mysql_create_user? +

Yes. Add a rate_limit block to the mysql_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 mysql_create_user completely? +

Set action: deny in the PolicyLayer policy for mysql_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 mysql_create_user? +

mysql_create_user is provided by the Mysql MCP server (mukul975/mysql-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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