pg_stats_top_n

Get the top N rows ranked by a column. Auto-excludes long-content columns (text, json, bytea) from output unless selectColumns is specified. Warning: Using a large

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-stats-top-n.md

WHAT IT DOES

What pg_stats_top_n does on PostgreSQL MCP Server

AI agents call pg_stats_top_n 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_stats_top_n is rated Low

This is a data retrieval tool that queries statistics and returns ranked rows. It has no side effects—it only reads and formats existing data. The description is slightly cut off but the core function is clearly a SELECT-like read operation. The filtering of long-content columns and optional column selection are display preferences, not write or execute operations.

From the tool's definition Tool name and description indicate it 'Get the top N rows ranked by a column' with filtering and display logic. No modification, deletion, or execution capabilities mentioned.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pg_stats_top_n 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_stats_top_n, this is the rule to start with:

pg_stats_top_n Allowed

pg_stats_top_n 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_stats_top_n": {}
  }
}

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_stats_top_n call is checked against it from then on.

FAQ

Questions about pg_stats_top_n

What does the pg_stats_top_n tool do? +

Get the top N rows ranked by a column. Auto-excludes long-content columns (text, json, bytea) from output unless selectColumns is specified. Warning: Using a large. 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_stats_top_n? +

Register the PostgreSQL MCP Server MCP server in PolicyLayer and add a rule for pg_stats_top_n: 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_stats_top_n? +

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

Can I rate-limit pg_stats_top_n? +

Yes. Add a rate_limit block to the pg_stats_top_n 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_stats_top_n completely? +

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

pg_stats_top_n 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_stats_top_n does on PostgreSQL MCP Server

Why pg_stats_top_n is rated Low

The rule that runs pg_stats_top_n safely

Questions about pg_stats_top_n

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