transaction · MySQL MCP Server MCP: Risk & Policy

WHAT IT DOES

What transaction does on MySQL MCP Server

AI agents invoke transaction to trigger actions in MySQL MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why transaction needs a policy

This tool runs arbitrary SQL statements atomically. Depending on the statements provided, it could perform reads, writes, destructive deletions, or schema changes. Since it accepts multiple arbitrary SQL statements and executes them, it falls under Execute at minimum, but could enable Destructive operations (DROP, DELETE) or Write operations.

From the tool's definition 执行事务（多条SQL语句，要么全部成功，要么全部回滚）— executes multiple SQL statements as an atomic transaction

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

transaction Rate-limited

transaction stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "transaction": {
      "limits": [
        {
          "counter": "transaction_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-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 transaction

What does the transaction tool do? +

执行事务（多条SQL语句，要么全部成功，要么全部回滚）. It is categorised as a Execute tool in the MySQL MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on transaction? +

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

transaction is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit transaction? +

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

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

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