postgresql_query

A execute tool on the Nyxstrike MCP server.

SERVERNyxstrike SOURCECommonHuman-Lab/nyxstrike

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/nyxstrike/postgresql-query.md

WHAT IT DOES

What postgresql_query does on Nyxstrike

AI agents invoke postgresql_query to trigger actions in Nyxstrike. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why postgresql_query is rated High

A PostgreSQL query tool on an offensive security platform likely executes arbitrary SQL against databases, which can range from read operations to destructive DDL/DML (DROP, DELETE, UPDATE). Given the context of a penetration testing platform designed for offensive security research, this tool is likely used to execute arbitrary SQL queries against target systems.

From the tool's definition Tool name 'postgresql_query' on a penetration testing platform; description is empty and uninformative.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs postgresql_query safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Nyxstrike, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For postgresql_query, this is the rule to start with:

postgresql_query Rate-limited

postgresql_query stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "postgresql_query": {
      "limits": [
        {
          "counter": "postgresql_query_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Nyxstrike, apply this rule, and every postgresql_query call is checked against it from then on.

FAQ

Questions about postgresql_query

What does the postgresql_query tool do? +

postgresql_query is a execute tool on the Nyxstrike MCP server. It is categorised as a Execute tool in the Nyxstrike MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on postgresql_query? +

Register the Nyxstrike MCP server in PolicyLayer and add a rule for postgresql_query: 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 Nyxstrike. Nothing to install.

What risk level is postgresql_query? +

postgresql_query is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit postgresql_query? +

Yes. Add a rate_limit block to the postgresql_query 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 postgresql_query completely? +

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

postgresql_query is provided by the Nyxstrike MCP server (CommonHuman-Lab/nyxstrike). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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