pg_pgcrypto_gen_random_bytes

Generate cryptographically secure random bytes.

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-pgcrypto-gen-random-bytes.md

WHAT IT DOES

What pg_pgcrypto_gen_random_bytes does on PostgreSQL MCP Server

AI agents call pg_pgcrypto_gen_random_bytes 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_pgcrypto_gen_random_bytes is rated Low

This tool generates random bytes locally as a cryptographic utility function. It does not read from external sources, write, modify, or delete any data. It is a pure computation/generation function with no side effects on any system state, making it closest to 'Read' (or arguably 'Other'), but since it produces output data without side effects, Read at low severity is appropriate.

From the tool's definition Generate cryptographically secure random bytes

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pg_pgcrypto_gen_random_bytes 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_pgcrypto_gen_random_bytes, this is the rule to start with:

pg_pgcrypto_gen_random_bytes Allowed

pg_pgcrypto_gen_random_bytes 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_pgcrypto_gen_random_bytes": {}
  }
}

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_pgcrypto_gen_random_bytes call is checked against it from then on.

FAQ

Questions about pg_pgcrypto_gen_random_bytes

What does the pg_pgcrypto_gen_random_bytes tool do? +

Generate cryptographically secure random bytes. 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_pgcrypto_gen_random_bytes? +

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

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

Can I rate-limit pg_pgcrypto_gen_random_bytes? +

Yes. Add a rate_limit block to the pg_pgcrypto_gen_random_bytes 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_pgcrypto_gen_random_bytes completely? +

Set action: deny in the PolicyLayer policy for pg_pgcrypto_gen_random_bytes. 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_pgcrypto_gen_random_bytes? +

pg_pgcrypto_gen_random_bytes 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_pgcrypto_gen_random_bytes does on PostgreSQL MCP Server

Why pg_pgcrypto_gen_random_bytes is rated Low

The rule that runs pg_pgcrypto_gen_random_bytes safely

Questions about pg_pgcrypto_gen_random_bytes

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