pg_migration_init

Initialize or verify the schema version tracking table (_mcp_schema_versions).

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-migration-init.md

WHAT IT DOES

What pg_migration_init does on PostgreSQL MCP Server

AI agents use pg_migration_init 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_migration_init is rated Medium

This tool creates or sets up a tracking table in the database if it doesn't exist. Creating a new table is a Write operation (reversible DDL — the table can be dropped later). It may also just verify the table exists without modification, but the primary action is initialization (creation).

From the tool's definition Initialize or verify the schema version tracking table (_mcp_schema_versions)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pg_migration_init 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_migration_init, this is the rule to start with:

pg_migration_init Rate-limited

pg_migration_init 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_migration_init": {
      "limits": [
        {
          "counter": "pg_migration_init_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_migration_init call is checked against it from then on.

FAQ

Questions about pg_migration_init

What does the pg_migration_init tool do? +

Initialize or verify the schema version tracking table (_mcp_schema_versions). 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_migration_init? +

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

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

Can I rate-limit pg_migration_init? +

Yes. Add a rate_limit block to the pg_migration_init 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_migration_init completely? +

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

pg_migration_init 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_migration_init does on PostgreSQL MCP Server

Why pg_migration_init is rated Medium

The rule that runs pg_migration_init safely

Questions about pg_migration_init

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