pg_server_version

Get PostgreSQL server version information.

SERVERPostgreSQL MCP Server SOURCE@neverinfamous/postgres-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-neverinfamous-postgres-mcp/pg-server-version.md

WHAT IT DOES

What pg_server_version does on PostgreSQL MCP Server

AI agents call pg_server_version to retrieve information from PostgreSQL MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why pg_server_version is rated Low

This is a straightforward read operation that queries and returns server version information. It has no side effects, cannot modify data, execute code, or affect system state. The low severity reflects minimal blast radius—version information is typically non-sensitive metadata and misuse causes no harm.

From the tool's definition Tool name 'pg_server_version' and description 'Get PostgreSQL server version information' indicate a query operation that retrieves metadata without modifying or executing anything.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pg_server_version 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_server_version, this is the rule to start with:

pg_server_version Allowed

pg_server_version is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect PostgreSQL MCP Server, apply this rule, and every pg_server_version call is checked against it from then on.

FAQ

Questions about pg_server_version

What does the pg_server_version tool do? +

Get PostgreSQL server version information. It is categorised as a Read tool in the PostgreSQL MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on pg_server_version? +

Register the PostgreSQL MCP Server MCP server in PolicyLayer and add a rule for pg_server_version: 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.

What risk level is pg_server_version? +

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

Can I rate-limit pg_server_version? +

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

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

pg_server_version 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.

KEEP EXPLORING

What pg_server_version does on PostgreSQL MCP Server

Why pg_server_version is rated Low

The rule that runs pg_server_version safely

Questions about pg_server_version

More on PostgreSQL MCP Server, and thousands of servers like it.