create_table · MySQL MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_table does on MySQL MCP Server

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

WHY IT NEEDS A POLICY

Why create_table needs a policy

CREATE TABLE is a schema modification operation that creates new database structures. This is reversible (tables can be dropped), distinguishing it from Destructive operations. While it modifies the database schema permanently until explicitly removed, it falls under Write category rather than Execute because it creates structured data objects rather than executing arbitrary code or commands.

From the tool's definition CREATE TABLE operation explicitly creates a new database table structure, which is a reversible data modification. The Chinese text '只读禁' indicates read-only mode restrictions apply. The tool name and SQL operation (CREATE TABLE) clearly denote table creation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_table Rate-limited

create_table 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_table": {
      "limits": [
        {
          "counter": "create_table_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 MySQL MCP Server, so you can run agents against it safely.

FAQ

Questions about create_table

What does the create_table tool do? +

CREATE TABLE；只读禁. It is categorised as a Write tool in the MySQL 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 create_table? +

Register the MySQL MCP Server MCP server in PolicyLayer and add a rule for create_table: 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 MCP Server. Nothing to install.

What risk level is create_table? +

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

Can I rate-limit create_table? +

Yes. Add a rate_limit block to the create_table 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_table completely? +

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

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