pg_citext_create_extension

Enable the citext extension for case-insensitive text columns. citext is ideal for emails, usernames, and other identifiers where case shouldn

SERVERPostgreSQL MCP Server SOURCE@neverinfamous/postgres-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-neverinfamous-postgres-mcp/pg-citext-create-extension.md

WHAT IT DOES

What pg_citext_create_extension does on PostgreSQL MCP Server

AI agents use pg_citext_create_extension to create or update resources in PostgreSQL MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your PostgreSQL MCP Server environment.

RISK

Why pg_citext_create_extension is rated Medium

Installing a database extension is a Write operation: it modifies the database schema and introduces new functionality, but the action is reversible (the extension can be dropped). This is more severe than Read (no side effects) but less severe than Destructive (irreversible deletion).

From the tool's definition Tool description states 'Enable the citext extension' — this creates or modifies database schema by installing a PostgreSQL extension, which is a reversible structural change.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pg_citext_create_extension 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_citext_create_extension, this is the rule to start with:

pg_citext_create_extension Rate-limited

pg_citext_create_extension stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "pg_citext_create_extension": {
      "limits": [
        {
          "counter": "pg_citext_create_extension_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT 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_citext_create_extension call is checked against it from then on.

FAQ

Questions about pg_citext_create_extension

What does the pg_citext_create_extension tool do? +

Enable the citext extension for case-insensitive text columns. citext is ideal for emails, usernames, and other identifiers where case shouldn. It is categorised as a Write tool in the PostgreSQL MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on pg_citext_create_extension? +

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

pg_citext_create_extension is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit pg_citext_create_extension? +

Yes. Add a rate_limit block to the pg_citext_create_extension 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_citext_create_extension completely? +

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

pg_citext_create_extension 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_citext_create_extension does on PostgreSQL MCP Server

Why pg_citext_create_extension is rated Medium

The rule that runs pg_citext_create_extension safely

Questions about pg_citext_create_extension

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