mysql_connect · MySQL MCP Server MCP: Risk & Policy

WHAT IT DOES

What mysql_connect does on MySQL MCP Server

AI agents use mysql_connect 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 mysql_connect needs a policy

Establishing a database connection is a Write-adjacent operation that sets up a session/state. It does not read, modify, or delete data itself, but it creates a persistent connection resource. Given the sibling tools include destructive operations (drop_database, drop_table, delete), a misused connection could be a precursor to high-severity actions.

From the tool's definition 连接到 MySQL 数据库 (Connect to MySQL database)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mysql_connect Rate-limited

mysql_connect 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_connect": {
      "limits": [
        {
          "counter": "mysql_connect_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 mysql_connect

What does the mysql_connect tool do? +

连接到 MySQL 数据库. 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 mysql_connect? +

Register the MySQL MCP Server MCP server in PolicyLayer and add a rule for mysql_connect: 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 mysql_connect? +

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

Can I rate-limit mysql_connect? +

Yes. Add a rate_limit block to the mysql_connect 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_connect completely? +

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

mysql_connect is provided by the MySQL MCP Server MCP server (pickstar-2002/mysql-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.