revoke_postgresql_privileges

THE RISK

Critical Risk

Why revoke_postgresql_privileges needs a policy

Revoking a PostgreSQL user's privileges or removing a user is a destructive, hard-to-reverse action that can immediately break application database access. The description 'Revoke a PostgreSQL user' implies removing access rights or the user entirely, which cannot be easily undone without manual intervention.

From the tool's definition Revoke a PostgreSQL user

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

POLICY

How to control revoke_postgresql_privileges

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

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "revoke_postgresql_privileges"
  ]
}

revoke_postgresql_privileges disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

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

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More cPanel MCP Server tools

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All 164 cPanel MCP Server tools →

Destructive tools on other servers

Android Forensics ADB MCP Server create_full_backup 0xarchive web3_revoke_key Frida Game Hacking MCP clear_scan CodeAnalysis MCP Server clear-session

Go deeper

Critical-risk tools in cPanel MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about revoke_postgresql_privileges

What does the revoke_postgresql_privileges tool do? +

Revoke a PostgreSQL user. It is categorised as a Destructive tool in the cPanel MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on revoke_postgresql_privileges? +

Register the cPanel MCP Server MCP server in PolicyLayer and add a rule for revoke_postgresql_privileges: 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 cPanel MCP Server. Nothing to install.

What risk level is revoke_postgresql_privileges? +

revoke_postgresql_privileges is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit revoke_postgresql_privileges? +

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

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

revoke_postgresql_privileges is provided by the cPanel MCP Server MCP server (0xhayd3n/cpanel-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 cPanel MCP Server tool call.

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

CHECK YOUR STACK →