mysql_sys_host_summary

Get connection and activity summary by host from sys schema.

SERVERMysql Mcp SOURCEoci:docker.io/writenotenow/mysql-mcp:v1.0.0

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-neverinfamous-mysql-mcp/mysql-sys-host-summary.md

WHAT IT DOES

What mysql_sys_host_summary does on Mysql Mcp

AI agents call mysql_sys_host_summary to retrieve information from Mysql Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why mysql_sys_host_summary is rated Low

This tool queries the MySQL sys schema to retrieve connection and activity statistics grouped by host. The sys schema is a read-only information schema in MySQL designed for system monitoring and diagnostics. No data is modified, deleted, or at risk of unintended side effects.

From the tool's definition Tool name contains 'summary' and description states 'Get connection and activity summary by host from sys schema' — retrieval-only operation with no modification, deletion, or code execution.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mysql_sys_host_summary safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mysql Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For mysql_sys_host_summary, this is the rule to start with:

mysql_sys_host_summary Allowed

mysql_sys_host_summary is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mysql Mcp, apply this rule, and every mysql_sys_host_summary call is checked against it from then on.

FAQ

Questions about mysql_sys_host_summary

What does the mysql_sys_host_summary tool do? +

Get connection and activity summary by host from sys schema. It is categorised as a Read tool in the Mysql Mcp MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on mysql_sys_host_summary? +

Register the Mysql MCP server in PolicyLayer and add a rule for mysql_sys_host_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 Mcp. Nothing to install.

What risk level is mysql_sys_host_summary? +

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

Can I rate-limit mysql_sys_host_summary? +

Yes. Add a rate_limit block to the mysql_sys_host_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_sys_host_summary completely? +

Set action: deny in the PolicyLayer policy for mysql_sys_host_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_sys_host_summary? +

mysql_sys_host_summary is provided by the Mysql MCP server (oci:docker.io/writenotenow/mysql-mcp:v1.0.0). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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