Perform basic security audit checks on database configuration.
AI agents call PostgreSQL_security_audit to retrieve information from Postgres without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Security audits retrieve and analyze configuration data to identify potential vulnerabilities. They do not execute commands, modify data, or trigger external operations. While the audit may reveal sensitive information, the tool itself only reads/queries the database configuration without making changes or triggering destructive operations.
From the tool's definition Tool name includes 'audit' and description states 'Perform basic security audit checks on database configuration' - audit operations are non-destructive queries of existing security settings and configurations, with no side effects or data modifications.
Documented attack patterns abuse exactly the kind of access PostgreSQL_security_audit gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Postgres, and nothing reaches the server without passing your rules. This is the rule we recommend for PostgreSQL_security_audit:
{
"version": "1",
"default": "deny",
"tools": {
"PostgreSQL_security_audit": {}
}
}PostgreSQL_security_audit is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Perform basic security audit checks on database configuration. It is categorised as a Read tool in the Postgres MCP Server, which means it retrieves data without modifying state.
Register the Postgres MCP server in PolicyLayer and add a rule for PostgreSQL_security_audit: 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. Nothing to install.
PostgreSQL_security_audit is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the PostgreSQL_security_audit 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.
Set action: deny in the PolicyLayer policy for PostgreSQL_security_audit. 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.
PostgreSQL_security_audit is provided by the Postgres MCP server (mukul975/postgres-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Postgres, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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239 Postgres tools catalogued and risk-classified — across an index of 43,000+ MCP servers.