vacuum_strategy_recommend

THE RISK

Low Risk

Why vacuum_strategy_recommend needs a policy

The tool performs analysis and produces recommendations about vacuum strategy rather than executing any vacuum operations. It reads database state to assess vacuum needs and outputs advisory information. No data is modified, deleted, or executed. Severity is low as misuse would only result in potentially misleading recommendations, not direct harm.

From the tool's definition 'Analyze vacuum needs and recommend vacuum strategy' - the tool analyzes and recommends, indicating a read/advisory operation with no side effects

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

POLICY

How to control vacuum_strategy_recommend

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

policy.json

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

vacuum_strategy_recommend 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 Postgres Mcp Legacy — 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

Related tools and policies

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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 vacuum_strategy_recommend

What does the vacuum_strategy_recommend tool do? +

Analyze vacuum needs and recommend vacuum strategy. It is categorised as a Read tool in the Postgres Mcp Legacy MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on vacuum_strategy_recommend? +

Register the Postgres Mcp Legacy MCP server in PolicyLayer and add a rule for vacuum_strategy_recommend: 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 Postgres Mcp Legacy. Nothing to install.

What risk level is vacuum_strategy_recommend? +

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

Can I rate-limit vacuum_strategy_recommend? +

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

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

vacuum_strategy_recommend is provided by the Postgres Mcp Legacy MCP server (neverinfamous/postgres-mcp-legacy). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Postgres Mcp Legacy tool call.

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

CHECK YOUR STACK →