mysql_comprehensive_performance_summary

THE RISK

Low Risk

Why mysql_comprehensive_performance_summary needs a policy

The tool generates a summary report by reading and combining multiple performance metrics. The server description explicitly states it is for 'read-only queries, performance analysis, and server monitoring', confirming no side effects. Severity is low as misuse only exposes internal database performance data.

From the tool's definition 'Generate a comprehensive performance summary combining multiple metrics' — purely aggregates and reports existing data; server is described as providing 'read-only queries, performance analysis, and server monitoring'

Documented attack patterns abuse exactly the kind of access mysql_comprehensive_performance_summary gives an agent:

POLICY

How to control mysql_comprehensive_performance_summary

PolicyLayer is an MCP gateway — it sits between your AI agents and Mysql, and nothing reaches the server without passing your rules. This is the rule we recommend for mysql_comprehensive_performance_summary:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "mysql_comprehensive_performance_summary": {}
  }
}

mysql_comprehensive_performance_summary is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Mysql — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about mysql_comprehensive_performance_summary

What does the mysql_comprehensive_performance_summary tool do? +

Generate a comprehensive performance summary combining multiple metrics. It is categorised as a Read tool in the Mysql MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on mysql_comprehensive_performance_summary? +

Register the Mysql MCP server in PolicyLayer and add a rule for mysql_comprehensive_performance_summary: 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_comprehensive_performance_summary? +

mysql_comprehensive_performance_summary is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit mysql_comprehensive_performance_summary? +

Yes. Add a rate_limit block to the mysql_comprehensive_performance_summary 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_comprehensive_performance_summary completely? +

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

mysql_comprehensive_performance_summary 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.

Enforce policy on every Mysql tool call.

Start from Mysql, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →