pg_vector_validate

Validate vector dimensions against column. Pass any combination of: vector (to check), table+column (for column dimensions), dimensions (expected).

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-vector-validate.md

WHAT IT DOES

What pg_vector_validate does on PostgreSQL MCP Server

AI agents call pg_vector_validate 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_vector_validate is rated Low

This tool performs a read-only validation check. It accepts input vectors and column specifications to compare dimensions, returning validation results without altering data, executing code, or producing side effects. The verb 'validate' combined with parameter passing for comparison purposes classifies this as a Read operation with low severity risk.

From the tool's definition Tool description states 'Validate vector dimensions against column' with parameters for checking and comparing dimensions. No language indicating modification, deletion, or execution of arbitrary operations—purely a validation/comparison operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pg_vector_validate 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_vector_validate, this is the rule to start with:

pg_vector_validate Allowed

pg_vector_validate 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_vector_validate": {}
  }
}

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_vector_validate call is checked against it from then on.

FAQ

Questions about pg_vector_validate

What does the pg_vector_validate tool do? +

Validate vector dimensions against column. Pass any combination of: vector (to check), table+column (for column dimensions), dimensions (expected). 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_vector_validate? +

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

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

Can I rate-limit pg_vector_validate? +

Yes. Add a rate_limit block to the pg_vector_validate 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_vector_validate completely? +

Set action: deny in the PolicyLayer policy for pg_vector_validate. 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_vector_validate? +

pg_vector_validate 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_vector_validate does on PostgreSQL MCP Server

Why pg_vector_validate is rated Low

The rule that runs pg_vector_validate safely

Questions about pg_vector_validate

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