run_maintenance

A execute tool on the Metis Public Health MCP server.

SERVERMetis Public Health SOURCEsveritg/metis_ph

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/sveritg-metis-ph/run-maintenance.md

WHAT IT DOES

What run_maintenance does on Metis Public Health

AI agents invoke run_maintenance to trigger actions in Metis Public Health. 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.

RISK

Why run_maintenance is rated High

The tool performs server-side operations that execute code/commands (maintenance procedures) rather than merely reading data. While not explicitly destructive in the sense of deleting data, maintenance commands modify database structure and can have significant effects.

From the tool's definition Tool named 'run_maintenance' on a production PostgreSQL MCP server with sibling tools that manage policies, analyze queries, and optimize indexing suggests this tool triggers database maintenance operations (e.g., VACUUM, ANALYZE, or reindex).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs run_maintenance safely

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

run_maintenance Rate-limited

run_maintenance 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": {
    "run_maintenance": {
      "limits": [
        {
          "counter": "run_maintenance_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Metis Public Health, apply this rule, and every run_maintenance call is checked against it from then on.

FAQ

Questions about run_maintenance

What does the run_maintenance tool do? +

run_maintenance is a execute tool on the Metis Public Health MCP server. It is categorised as a Execute tool in the Metis Public Health MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on run_maintenance? +

Register the Metis Public Health MCP server in PolicyLayer and add a rule for run_maintenance: 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 Metis Public Health. Nothing to install.

What risk level is run_maintenance? +

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

Can I rate-limit run_maintenance? +

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

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

run_maintenance is provided by the Metis Public Health MCP server (sveritg/metis_ph). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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