pg_security_audit
Run a comprehensive security audit checking SSL, password encryption, superuser exposure, logging, and HBA rules.
This record as markdown: /tools/io-github-neverinfamous-postgres-mcp/pg-security-audit.md
What pg_security_audit does on PostgreSQL MCP Server
AI agents invoke pg_security_audit to trigger actions in PostgreSQL MCP Server. 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.
Why pg_security_audit is rated High
While this tool primarily reads security configurations (which would suggest 'Read' category), the described audit checking process involves executing diagnostic logic against the database and its security state. This goes beyond passive data retrieval—it actively runs audit procedures.
From the tool's definition Tool performs a 'comprehensive security audit' that actively checks multiple security subsystems (SSL, password encryption, superuser exposure, logging, HBA rules).
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
The rule that runs pg_security_audit safely
PolicyLayer is an MCP gateway: it sits between your AI agents and PostgreSQL MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For pg_security_audit, this is the rule to start with:
pg_security_audit 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.
The button opens the PolicyLayer dashboard: create your workspace, connect PostgreSQL MCP Server, apply this rule, and every pg_security_audit call is checked against it from then on.
Questions about pg_security_audit
Run a comprehensive security audit checking SSL, password encryption, superuser exposure, logging, and HBA rules. It is categorised as a Execute tool in the PostgreSQL MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the PostgreSQL MCP Server MCP server in PolicyLayer and add a rule for pg_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 PostgreSQL MCP Server. Nothing to install.
pg_security_audit is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the pg_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 pg_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.
pg_security_audit is provided by the PostgreSQL MCP Server MCP server (@neverinfamous/postgres-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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