pg_performance_baseline

Capture current database performance metrics as a baseline for comparison.

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-performance-baseline.md

WHAT IT DOES

What pg_performance_baseline does on PostgreSQL MCP Server

AI agents call pg_performance_baseline 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_performance_baseline is rated Low

The tool captures (reads) performance metrics to establish a baseline. This is a non-destructive, non-modifying operation that queries current database stats. Severity is low as it only reads metrics and poses minimal risk if misused.

From the tool's definition 'Capture current database performance metrics as a baseline for comparison' — this is a read/snapshot operation that retrieves metrics without modifying data

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pg_performance_baseline 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_performance_baseline, this is the rule to start with:

pg_performance_baseline Allowed

pg_performance_baseline 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_performance_baseline": {}
  }
}

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_performance_baseline call is checked against it from then on.

FAQ

Questions about pg_performance_baseline

What does the pg_performance_baseline tool do? +

Capture current database performance metrics as a baseline for comparison. 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_performance_baseline? +

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

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

Can I rate-limit pg_performance_baseline? +

Yes. Add a rate_limit block to the pg_performance_baseline 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_performance_baseline completely? +

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

pg_performance_baseline 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_performance_baseline does on PostgreSQL MCP Server

Why pg_performance_baseline is rated Low

The rule that runs pg_performance_baseline safely

Questions about pg_performance_baseline

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