pg_diagnose_database_performance

Consolidates key performance metrics into a single actionable report:

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-diagnose-database-performance.md

WHAT IT DOES

What pg_diagnose_database_performance does on PostgreSQL MCP Server

AI agents call pg_diagnose_database_performance 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_diagnose_database_performance is rated Low

The tool appears to gather and consolidate existing performance metrics into a report, which is a read/query operation. No writes, executions, or destructive actions are indicated. Severity is medium because performance diagnostics may expose sensitive configuration and query data.

From the tool's definition 'Consolidates key performance metrics into a single actionable report' — aggregates and reads performance data, no mutation implied

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pg_diagnose_database_performance 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_diagnose_database_performance, this is the rule to start with:

pg_diagnose_database_performance Allowed

pg_diagnose_database_performance 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_diagnose_database_performance": {}
  }
}

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_diagnose_database_performance call is checked against it from then on.

FAQ

Questions about pg_diagnose_database_performance

What does the pg_diagnose_database_performance tool do? +

Consolidates key performance metrics into a single actionable report:. 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_diagnose_database_performance? +

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

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

Can I rate-limit pg_diagnose_database_performance? +

Yes. Add a rate_limit block to the pg_diagnose_database_performance 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_diagnose_database_performance completely? +

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

pg_diagnose_database_performance 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_diagnose_database_performance does on PostgreSQL MCP Server

Why pg_diagnose_database_performance is rated Low

The rule that runs pg_diagnose_database_performance safely

Questions about pg_diagnose_database_performance

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