execute_validated_sql · Xugu MCP: Risk & Policy

WHAT IT DOES

What execute_validated_sql does on Xugu

AI agents invoke execute_validated_sql to trigger actions in Xugu. 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.

WHY IT NEEDS A POLICY

Why execute_validated_sql needs a policy

This tool runs SQL commands against a database. Even though labeled "validated" and in "lightweight mode", SQL execution is inherently an Execute category action because it triggers database operations with side effects that depend entirely on the SQL content. The validation/lightweight designation reduces (but does not eliminate) risk of destructive outcomes, but the core function remains code execution.

From the tool's definition Tool description explicitly states "Execute validated SQL query". The tool executes SQL queries, which can trigger external database operations whose effects depend on the query arguments.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

execute_validated_sql Rate-limited

execute_validated_sql 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": {
    "execute_validated_sql": {
      "limits": [
        {
          "counter": "execute_validated_sql_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Xugu, so you can run agents against it safely.

FAQ

Questions about execute_validated_sql

What does the execute_validated_sql tool do? +

Execute validated SQL query (lightweight mode). It is categorised as a Execute tool in the Xugu MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on execute_validated_sql? +

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

What risk level is execute_validated_sql? +

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

Can I rate-limit execute_validated_sql? +

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

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

execute_validated_sql is provided by the Xugu MCP server (leokupo/xugu-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.