mysql_comprehensive_health_check

THE RISK

Low Risk

Why mysql_comprehensive_health_check needs a policy

A comprehensive health check tool performs queries and analysis to assess server status (uptime, connections, performance metrics, replication status, etc.). This is a retrieval and diagnostic operation with no side effects—it gathers information for monitoring purposes.

From the tool's definition Tool name and description indicate diagnostic and monitoring operations. Description states the server provides 'read-only queries' and 'server monitoring'.

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

POLICY

How to control mysql_comprehensive_health_check

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_health_check:

policy.json

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

mysql_comprehensive_health_check 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 →

Free to start. No card required.

EXPLORE

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All 233 Mysql tools →

Read tools on other servers

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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_health_check

What does the mysql_comprehensive_health_check tool do? +

Perform a comprehensive MySQL server health check and diagnostics. 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_health_check? +

Register the Mysql MCP server in PolicyLayer and add a rule for mysql_comprehensive_health_check: 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_health_check? +

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

Can I rate-limit mysql_comprehensive_health_check? +

Yes. Add a rate_limit block to the mysql_comprehensive_health_check 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_health_check completely? +

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

mysql_comprehensive_health_check 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 →